Thank you so much for doing this sir!! I left my physics project to the last minute and this video saved my life. It was so clear and easy to follow. Appreciate it!:)
If you have a question it is probably worth reading this video description first because the answer may already be here. To help you find my videos I made two search guides ruclips.net/video/ceBSOoOHcgw/видео.html or ruclips.net/video/Zj4UgwkwYRk/видео.html or checkout my playlists page ruclips.net/user/GrandadIsAnOldManplaylists?flow=grid&view=1
Hi Victor, I was not sure what you needed so I just guessed and this was the result. It was fun making it and didn't take very long. Thank you for asking the questions.
@@ed1tz468 that rather depends on when you start the timer. If you have the cardboard, pencils, paperclips, glue, and tools all arranged ready on the table, and you know what you are doing, you can probably do it in half an hour but I would expect it probably takes longer. If you are looking to make a rubber band powered car and you are not restricted to the same components used in this car, then I would choose a different one from my playlists. Cardboard wheels and pencil axles are not very good choices. Further information is in my video description.
I needed this so bad! I'm doing a project that's extremely similar to this with a friend, and we both had no idea where to start. Hopefully this gave me enough ideas to help us win! Thanks!!
Thank you very much for sharing this project. My son will truly benefit from your guidance while completing a homework assignment in which he was a little confused. Cheers!!
I’m doing this project for a second time because it was so fun when I did it from my science project which I actually did during Covid at the time, but my teacher just said it was one of the best projects
Shaima Sakhi asks "Ow big is the car? And how much does it weight" The answer can be judged by watching the video. It is less than the weight of the cardboard box I started with and it will be different for you depending on what cardboard you can use. The width is "one pencil" because I use pencils for axles. The length is less than the length of the cardboard box you start with, mine looks about 2+1/2 pencils long. The wheels are the size of the cereal bowl I used to make the circles, so they will be whatever size your cereal bowl is, or whatever circle you choose to use. I hope that helps as I do not know what materials you will use to make your car.
GrandadIsAnOldMan I'm doing this for a school project so... can I use XD disks as wheels and bottle caps as wheels? Would that be accurate with the base?
Aamna Aftab sorry I don't know what an XD disk is. If you mean CD and bottle caps, then yes that is always my first choice but this particular build was made from cardboard because I often get asked to use something other than CDs. I have hundreds of videos of rubber band powered cars and most of them use CDs. This is probably a good one to look at ruclips.net/video/pIO3FiHX4Oc/видео.html
Thanks and good luck with that, Jake. I test all my cars in my kitchen which is 5 metres long so as long as they hit the wall at the end I can be confident they will go over 5 metres. I have over 80 videos on the subject of rubber band power in these playlists Rubber Band Power ruclips.net/p/PLA5a2xPRSrB1otXh0w36OwsYIHZznUWp6 Rubber Band Powered Car #8 ruclips.net/p/PLA5a2xPRSrB0zJ5RHjvsw46Mio6uJjF5_
I know this is an old video, thanks for this btw gonna use in physics, but would you consider the rubber band used in this video a pulley? (as a simple machine)
Hi, thanks for watching and commenting. Regarding the pulley, I had not thought of it that way. I wouldn't think the band itself would not be a pulley but wrapping it round the axle probably makes the axle a pulley. I see Wikipedia has this definition "A pulley is a wheel on an axle or shaft that is designed to support movement and change of direction of a taut cable or belt, or transfer of power between the shaft and cable or belt."
I liked to thank you so much, this video helped me because I have a final exam except that we are making projects for our final exam which is a race between classes and who has the fastest rubber powered car. This counts for 20% of our overall mark and seeing as our teachers never taught us how to make a car, this was extremely helpful in more ways then others.
@@GrandadIsAnOldMan Hello 😊, I will be making this for my project but I just wanted to know if the car would still work if I replaced the pencils with wooden circular chopsticks/bamboo skewers! I would be very grateful if you reply 🙌(i know im 9 years late haha)
When you add a comment to somebody else's comment, especially one that is 9 years old, RUclips often does not notify me. For future reference, you would do better to make a fresh comment. However, I have found this comment in my "Held for review" folder, which is where RUclips stores comments it suspects are spam. The only reason I used pencils in this video was because I was asked to. I would recommend bamboo skewers. Much better than pencils as long as they are not too thin. You will find lots of information in the video description, including links to my Putarubberbandonit channel where I put all my new rubber powered projects.@@littlegobby
haha thank u very much i just thought u might not reply to my comment if it was new because then it would be all the way at the bottom! Thank you for the advice, will use skewers!@@GrandadIsAnOldMan
I was wondering if there is a certain website That I could go to that would help me explain the science behind the rubber band car (such as how and why it moves)?
Just type a question into Google and you will find some links. Try pasting this in "the science behind a rubber band car", I just did and found plenty of pages giving information.
Nice building skills! Have you ever built a bogie axle vehicle? It should roll nicely over obstacles like the mars rover and lots of vehicles before it. Nice passive suspension.
Thanks, I haven't tried a bogie axle vehicle. In fact I don't know what one is. As far as I can tell from from looking at Google it would be a multi-axled vehicle with each axle individually sprung. I don't put suspension on my vehicles as they are just quick and simple so a multi-axle multi-suspension vehicle is probably not going to appear on my channel. The nearest thing to that would be my rubber band powered train ruclips.net/video/kZcPErIt1w4/видео.html or my 6 wheel drive rubber band powered car ruclips.net/video/bRjVzmcXPjM/видео.html but neither have individually sprung axles.
GrandadIsAnOldMan Cheers! The way I'd describe it is that you have wheels sprung in pairs simply by giving them a common central pivot. Both wheels stay grounded, weight perfectly distributed, even when one encounters an obstacle or pothole. I appreciate the simplicity of your builds. I may try if I can build my own, and test it for roll-over capacity against an unsprung counterpart.
Thank you so much! I did this for a science project with my mom and she was really helpful but so where are you! I hope I get a good grade on this. This was very helpful and I’d rate this 9.5/10 because it was a TEENY bit long (when we made it) (-3) and it was a a short ride on ours(-2) but otherwise BEST THING EVER!!!
Hi Fluvia. 1. Going straight is easy. Just take care to get your wheels straight on the axles and get the axles parallel front and back. If you take care cutting the chassis so the front and back are parallel and take care gluing the axle tubes in place then it will run straight. 2. Running 3 metres and stopping is fairly easy and I have some cars in my playlist that do that. 3. Running about 3 metres, stopping, and running backwards is fairly easy. You just attach the rubber band to the back axle so it is fixed. When the car runs forwards it unwinds the rubber band, goes past the point where the band is attached and the momentum of the car starts to wind the rubber band up again until the car slows down, stops and then unwinds in the opposite direction running the car backwards. 4. Getting it to go exactly 3 metres forward, stop, and then run exactly .5 metres backwards is a bit more challenging. I did something like it last year with this car although you would need to trim it to get the distances you want. The motor is far more powerful than you would need and you could make a smaller car, I just modified one I had already. Rubber Band Powered Car #8 goes forwards and backwards ruclips.net/video/bBU8UngaFfM/видео.html a. Make a fairly long car to give you a long enough rubber band motor to work with. b. Use a short rubber band motor about half the length of the car and attached to a string that wraps around the axle. c. Put a short peg in the back axle. d. Tie the string to the axle so it is fixed and cannot slip. e. Wind the string around the axle so it can travel .5 metres f. Turn the string round the peg then wind it round the axle in the opposite direction enough for the car to go 3 meters. g. When you release the car it should travel 3 metres, stop, then come back .5 metres. h. If you put rubber on the wheels it should help to stop the car sliding when it stops to come back. There are a lot of rubber band cars in my playlists ruclips.net/p/PLA5a2xPRSrB1otXh0w36OwsYIHZznUWp6 ruclips.net/p/PLA5a2xPRSrB0zJ5RHjvsw46Mio6uJjF5_
Hi! I love your simple car designs. I am a elementary school teacher and would like to start a project with my students to create simple cars (either using a rubber band, balloon, or possibly a small motor to make them go). I would love to know what are the most important design elements my students should learn and think about when making a car. Any help would be much appreciated! I don't have much experience with this sort of thing, but it is something my students are very interested in. Thanks!
Gosh, there are some many things you can learn when making these cars it is difficult to think where to start. Right at the start there is the issue of safe use of tools and which tools are the right tools for the job. Next I would think about which materials are being used and why (weight, rigidity, flexibility, durability). Then we get into physics and laws of motion, power to weight ratios, leverage, gearing, friction. I guess there are even human relationships, sharing, team work, competitive practices. I had better stop there because my mind is now drifting, what was the question :-) Oh yes, important design elements. Keep it simple, understand what the task is, do the minimum to achieve the task. I think my simplest cars (Cardboard rectangle, drinking straws, barbecue skewers, CDs and bottle tops) are as good as any of my more complicated builds, easier to make and easily adapted. Hope that helps.
Further - more power Turning - are the axles parallel - are the wheels spinning I will paste my standard list of tips below (It may take you a while to read through it all) - Fault Finding on a Rubber Band Powered Car 1. The rubber band does not connect to the front axle, some people misunderstand the videos and attach the rubber band to the front axle as a convenient anchor. That stops the axle turning. Make a different anchor point, study the video again. 2. Does the car run forwards freely if you just push it without the rubber band connected? If it does not, make sure that the axles are free where they pass through the body. You may need to enlarge the holes where the axle goes through the body or use larger tubes for the axles to go through. Are your wheels round with no flat spots. You may need to trim them. 3. Do the wheels rub against the body of the car? If they do, the friction will slow the car or even stop it moving. Put some spacers on the axle between the wheels and the body to keep the wheels clear. Discs or washers cut from plastic or cardboard should work. 4. Do the wheels spin evenly when you watch them? If your axles do not pass through the centres of the wheels, the wheels will not spin evenly and this makes it harder for the car to run, so you will need to make new axle holes, taking more care finding the exact centre. 6. When you wind the rubber band round the axle do the wheels turn at the same time or are they slipping on the axle? If the wheels are slipping on the axle, the rubber band will unwind without the wheels turning on the ground. You need to do something to stop them slipping. Glue them to the axle or wrap tape round the axle where the wheels are to hold them in place. 7. When you release the car it does not move, but if you lift it in the air, the rubber band unwinds and the wheels spin OK. Either the ground is too rough or the car is too heavy. Try the car on a smooth surface, make the car lighter, add more rubber bands. 7. Wheel spin. When you release the car, do the wheels spin without the car moving forward? You do not have enough grip on your wheels. Either add some weight to the car to help the grip or put something on the wheels to improve the grip. Things that will improve grip - hot glue all the way around the rim like a tyre. Rubber bands stretched across the wheel. A strip of rubber cut from a balloon stretched around the edge of the wheel. Strip of rubber cut from washing up gloves or disposable rubber gloves. 8. Trouble connecting the rubber band to the back axle? Glue a short stick to the axle to act as a hook for connecting the rubber band. We are trying to construct a rubber powered car that can go as "far" as possible. It doesn't have to be fast. It just has to travel as far as possible and as "straight" as possible. Can you please recommend me a design? Or at least give me a general idea of what critical points I should be aware of while designing my car? This is a fairly regular question. I am assuming you have some set criteria for number of rubber bands and size of vehicle so putting those aside. The first point about travelling fast or a long distance is minimising your friction because that is what wastes your power. 1. Friction caused by badly aligned wheels rubbing on the bodywork should be easy to fix by adding spacers to keep the wheels clear. 2. Friction where the axle is attached to the bodywork is reduced by making sure the axle bearing surfaces are something that does not bind together. Wood and cardboard are not good. Metal surfaces are better. Steel and brass is good. Ball race bearings would be even better. Whatever you have, even if it is just wood and cardboard, you can improve by making sure there is clearance so they do not jam together and maybe rub some graphite from a pencil where they make contact might help. 3. Friction with the wheels to the ground can be a mixed blessing. Minimise the friction of the front wheels by using very thin wheels, however you may need some grip to ensure they keep the car going straight. The same applies to the back wheels, assuming you are using the back wheels as the drive wheels. However if they do not have enough grip they will spin under power and that is all wasted energy. Thin wheels with rubber tyres would be best in that case. Larger wheels take more effort to get them turning but once moving they have the momentum to keep rolling when the rubber bands have finished. You could experiment with different sizes to see which work best. You could use some sort of gearing to start with a large gear to get the wheel moving and then a smaller gear to maintain the motion. There are some examples in my playlists. Reducing unnecessary weight by trimming the bodywork a little may help but make sure you don't loose grip and start the wheels spinning if the body is too light. It may bend or break under tension so be careful. Another trick I have found helps is to stretch the rubber band as you wind it round the axle so you get more turns round the axle, this can make a significant difference compared to just winding the band normally. If you can only use a short rubber band, connect it to the axle using thin string so the string winds round the axle stretching the rubber band. Thin string will give you more turns round the axle than thick string. This simple one does 12 metres ruclips.net/video/pIO3FiHX4Oc/видео.html with just 1 size 64 rubber band. There are several reasons the car might turn to the right - or left - here are some I can think of. 1. Your front axle is not parallel to your back axle so the car has an inbuilt turn. A quick check would be simply to push the car forwards without the bands connected and see if it turns. 2. When you tension the rubber band the body or the axle is flexing creating a turn. Try winding the band to one side of the axle. Looking from the back if you wind it on the right it pulls the right side of the axle forward turning the car right. If you wind it on the left it pulls the left side of the axle forward and the car goes left. ruclips.net/video/IErkUylbG9c/видео.html 3. Probably most likely, the wheels are spinning under power allowing the back of the car to slide to one side. Fix this by adding extra grip to the wheels such as a strip cut from a balloon or rubber gloves stretched around the rim of the wheel to provide a rubber tyre. Here is a link that shows this ruclips.net/video/ZnuPnveCbxs/видео.html 4. The front wheels are sliding sideways under power, fix this the same as '3' above. 5. One or more of your wheels are binding on the side of the car causing it to turn. 6. One or more of your wheels are not round and the unevenness is causing the car to skip and turn. 7. Your wheels are not the same size so the car turns towards the smallest wheel. 8. Your axles are not level with the ground and the car is running on only 2 or 3 wheels. This may be the body flexing and not show until the rubber bands are wound up and under tension. The two most important factors for acceleration and speed over a short distance are the power of your motor and the grip of your wheels. If you don't have the power then your car will not move fast but if your wheels don't grip then any extra power will just spin the wheels and the car won't move. If you have a fixed amount of power by being limited to the number and size of bands you can use then you can increase your acceleration by enlarging your back axle. I wrap stuff around the axle to make it thicker. That will increase the acceleration but probably reduce the total distance your car will travel. If you are only going a short distance that probably won't matter. You can also use smaller wheels to increase acceleration but you will find it even harder to get good grip with smaller wheels. Some helpfiles Making the CD wheels ruclips.net/video/ZRrjBuWfmrM/видео.html CD Wheels with Cardboard Hubs ruclips.net/video/Js1rtn2IGTE/видео.html Putting rubber tyres on CDs ruclips.net/video/ZnuPnveCbxs/видео.html Connecting rubber bands ruclips.net/video/EbYuhdwknbs/видео.html Connecting the band to the axle ruclips.net/video/0wPYxloUFJQ/видео.html
Hi Grandad, Me and my boys (8) and (6) just love your shows. We've made rubberband, fan and motor powered cars based on your videos. My six year old, Aiden, wants to put a hammer-like contraption on the top of one of his cars. He built a hammer-like thing (about 4 inches long) and we attached it to the body of a little lego guy (sans the head) and attached the lego guy's butt to the top of the car so that the lego guy acts as a hinge and the hammer can move up and down. Aiden said, "let's ask Granddad how to make this move!" He wants to motorize this up and down action, and I have no idea how to help him. The body of the car is a Pringles can, so it's cylindrical, with a diameter of maybe 3-4 inches. The tires are nice big tires that we pulled out of a building kit. Hope this makes some sense. Looking forward to your thoughts. Ichiko
I would suggest a cam on the back axle that hits a rod that is attached to the hammer. If I have time I will have a look but I am rather busy this week-end so it may be a while before I get to it. Another option would be something like I did in this project ruclips.net/video/FBlrb1Xeh2g/видео.html
GrandadIsAnOldMan .I guess that the hammer would have to be on a free swinging hinge so that if something hit it, it would go up in the air and come back down again. The lego man hinge stays in whatever position you left it in, so I'm not sure that would work for us, but Aiden is looking forward to seeing anything you might come up with. Thanks!
Sorry for the late response but AWESOME hammer action. My son loved it and we all got such a kick out of it. By the way, if you get the chance, can you explain what the big black blob on some circuits are. I think you actually refer to them as "black blobs". Thank you!
The black blob is the circuit board containing all the circuitry that has been designed for a specific purpose for whatever the toy or component does. It is the same as a chip. I have no idea how they are made although I would guess it is a similar process to making a chip but somehow sealed directly onto the board with a few larger components added to the board that could not be miniaturized in the same way.
Girish Bedekar I can only guess that something is too tight stopping the wheels from turning. Did you bend the paperclips round the axle and allow free play for the axle to spin 4:58. All the wheels and axles should spin freely without the rubber band connected. Have you attached the rubber band to the paperclip at the front end 7:58. It must not foul the front axle.
+Is mY life Diaura it's a regular request every year. If you look in the video description there are some useful links. I have nearly 200 different rubber band powered cars in that playlist.
Nanci Melgoza there are several videos on RUclips with braking mechanisms that will stop the car at a certain distance. All of these videos are my simple version that just uses a length of string winding up round the axle to measure the distance. It is not very accurate when you cover longer distances.ruclips.net/video/vc0URTIqdSA/видео.html ruclips.net/video/b3R35C49MSI/видео.html ruclips.net/video/ahbQF5AyF9Y/видео.html ruclips.net/video/-ACctRhxhDQ/видео.html ruclips.net/video/yIZo0ksZc1M/видео.html This is my playlist that includes other people's brake mechanisms ruclips.net/p/PLA5a2xPRSrB3MyidvKMT3DqU1vNy9Atsf
When you wind up the car's axle you stretch the rubber band and store potential energy. When you release it the rubber band starts to unwind, and the potential energy is converted to kinetic energy as the car is propelled forward.
+MsMizlicious in this video I talk through the differences between small wheels and big wheels - Rubber Band Powered Cars - Looking at the MATHS ruclips.net/video/HNcA04ojF0s/видео.html
If you want to use CDs for wheels the option I use is to fit plastic bottle tops as the hubs, see this helpfile Helpfile - How to use Bottle Tops for CD Hubs
Yes you can, loom bands are just small rubber bands. I have used them on several of my cars. You just need to double them up if you need more power, or make several strands. Here is a simple one ruclips.net/video/fjpZ6hYZc-4/видео.html
Dear Grandad: I just bought a Model car that has the wind up already. It's the little plastic gears. Can you show us how to take the "motor" apart and maybe even make it go faster? Thanks! From: Poet
Hi Poet Wells, I do have some videos showing the insides of "clockwork" type motors but as for making them go faster, there isn't a simple fix. You would have to change the gearing or even replace the spring and neither option is very practical. You might just have to look at reducing the weight of the car to allow it to go faster by removing parts that are not needed. Maybe change the size of the wheels. Smaller wheels will allow it to accelerate faster. Larger wheels will give it a higher top speed but it will be slower starting. Here are a couple of related playlists Clockwork playlist ruclips.net/p/PLA5a2xPRSrB1D-93lQxyjysBGrhqkQn52 Pull-Back toys ruclips.net/p/PLA5a2xPRSrB2KoevWC9Nu0xYmBHyZw50O Disassembly/Tear down playlist ruclips.net/p/PLA5a2xPRSrB1GrgALJEle2lVqOrR1sX6V
+Neon Snow I don't know how you have attached the CDs to the pencils so I cannot guess what your problem is however if you look in my video description there are some links to help files on using CD wheels.
No I didn't use any measurements, but I would guess it was 4 or 5 inches wide as it needs to be narrower than the pencils I used for axles. I made it as long as the pieces of cardboard I had available. Looking at the video and comparing the length to the width I would guess that was at least 12 inches long, maybe a bit more. There are several useful links in the video description to help you. I have hundreds of rubber band car designs.
Keep it simple. The width needs to be less than the length of your pencils or you won't be able to fit the wheels. The length depends on what cardboard you have available. The longer it is, the more rubber bands you can use, so it will go further. A longer car is easier to keep in a straight line. I would think 12 inches or 30 cm is a good length and as I said, the width would depend on your pencils. In response to a recent request I made a new version of this using tape to hold the paperclips in place ruclips.net/video/QKgfNWTa0e8/видео.html
catlin ethridge it doesn't matter how you bend it, you just need a loop showing at the top so you can attach the rubber band. I opened it out to straighten it, then bent it into a U shape, pushed it into the cardboard and bent the loop up so it shows at the end. If you slow the video down using the settings option you can see this, but I understand this is a problem.
Here are some of my cars carrying heavy weights. The main issue is making sure your wheels and axles are strong enough to take the weight. If you use CDs then use 3 or 4 side by side for extra strength. The last link here is not rubber band power but it shows how heavy you can make something and still use CDs for wheels. Let's carry 4 lbs over 3 m using #8 design ruclips.net/video/1tq2GE-PnZY/видео.html My Rubber Band Powered Car #4 carries 5 lb for 2m ruclips.net/video/JFi8AKVAmPo/видео.html Bargain Store Project #59 Floor Mop Gravity Powered Car ruclips.net/video/Q70t5v8RNTU/видео.html
I just grabbed a handy sized bowl and drew round it. I prefer to use CDs which are just under 5 inches diameter (120mm). I think that bowl I used was about 6 inches in diameter (150mm). The smaller your wheels, the more likely they are to wheelspin, which you don't want. If the wheels are too large, your rubber band may not be powerful enough to get them moving.
please help me, i need to make a rubber band car that goes 3 feet and stay on a one meter wide track, will the car in this video work or not if it does then thanks and if it doesn't then can you make a video if it.
+The Master Of All Video Games I think any car that goes 3 feet should stay on a 1 metre wide track as the track would be wider than it is long. The distance they travel is directly related to how well you make them. If you minimise the friction on the axles then the car will continue to freewheel for a long time after the rubber band has finished. Same with the car going straight. If you build it so the back axle and front axle are parallel then the car should go straight. It will turn to one side or the other if your axle is too weak and is bent by the strain of the rubber band. It will also turn to one side if the wheels spin and slip under power due to lack of grip so making sure they have good grip will help. In the video there are two wide red lines on the floor. They are 3 metres apart so you can see this car travels over 3 metres easily. It also goes straight enough to stay within a 1 metre track. There are helpful links in the video description including this one for my Rubber Band Powered Cars playlist which has 170 videos in it ruclips.net/p/PLA5a2xPRSrB3g5RiX8Kf_uUBOL0Tb7AS0
The Master Of All Video Games the only reason I used cardboard was because I was asked to for this project. I would always use CDs given the choice as I find them very good for this sort of project. If you look at the rubber band car playlist most of them are using CDs
You really need to slow down when you are putting the rubber bands on the car and explain because I'm having troubles finding how to do that in any of your videos.!
Connector? The rubber band is attached to the chassis at the front using a paperclip 07:58 and the rubber band is just wrapped around the pencil axle so it wraps over itself to hold it in position 08:45
Caio there are 128 videos in my Rubber Band Power playlist, some use more rubber bands and some use less. The number of bands is fairly irrelevant as you can get a complete range of sizes so one big rubber band can be bigger than a dozen small ones joined together. I just buy a pack of the cheapest I can find and use as many as I need for the project I am building. The shorter the body the less rubber bands you need or just extend the length with a piece of string. ruclips.net/p/PLA5a2xPRSrB1otXh0w36OwsYIHZznUWp6
goldy vijay I will have to think about that. I see a couple of issues. I think it would take longer to make a good one than I really want to spend on my projects. I have no musical skills so even if I made one I would not be able to play it to demonstrate it. Maybe a very simple one with a cardboard box and some rubber bands.
goldy vijay I did my best for you, hope you like it. If you look through the comments, somebody else has left a link to one that they made which looks really good. ruclips.net/video/yfjs-GLkZMU/видео.html
If I really wanted to, I am sure it could be done using a stiff piece of cardboard as a spring to provide power but it would take far longer to make than I am willing to spend on a project. All the parts would have to lock together without glue to be 100% In fact as you have put no limitation on size or weight I have just thought of a way to do it easily using very big wheels and gravity.
As many as you like. Rubber bands come in different sizes. You want the length of the rubber bands to be slightly less than the distance from the front of the car to the back axle, That is to ensure it comes off the axle when it has unwound. If it stays connected, it will start winding up the wrong way round and stop the car rolling. If you are limited to one, you can extend it using string.
+Zainab Jackson I don't know, does it matter? At 09:00 I think I can count 8 of them. It depends what size you have available. If you can only use one you can use a piece of string to get to the back axle. Here is a good example ruclips.net/video/pIO3FiHX4Oc/видео.html
As long as you want. The longer it is, the more rubber bands you could use to power it and longer chassis tend to go straighter. If it is too short, then the back wheels might rub against the front wheels.
Thank you so much for doing this sir!! I left my physics project to the last minute and this video saved my life. It was so clear and easy to follow. Appreciate it!:)
Hey, thanks for the positive feedback, that is great news to know it helped you.
Who else is learning about friction and had to do this 3 weeks ago and are berly starting on the last day. Just me?
Good luck with that. You will find helpful stuff in the video description.
@@GrandadIsAnOldMan thanks allot for this I got a good grade on it
@@chris-mz9nb Hey, thanks, well done 👍
Litterally me
Me
If you have a question it is probably worth reading this video description first because the answer may already be here. To help you find my videos I made two search guides ruclips.net/video/ceBSOoOHcgw/видео.html or ruclips.net/video/Zj4UgwkwYRk/видео.html or checkout my playlists page ruclips.net/user/GrandadIsAnOldManplaylists?flow=grid&view=1
My daughter's only has to go one meter! Thanks for taking the time to make this
Thank you, there are plenty more on my channel made from all sorts of materials, rubber band powered cars are a regular request.
Thank you for making this on such short notice! This really helped!
Hi Victor, I was not sure what you needed so I just guessed and this was the result. It was fun making it and didn't take very long. Thank you for asking the questions.
Absolutely brilliant! Thank you, sir. You have made physics class a bit easier for me.
Thank u very much
We have a science project of exactly that
:)
I couldn't figure out how to attach the wheels to my rubberband powered car project. This video helped!
Glad I could help! You will find useful information in the video description 👍
@@GrandadIsAnOldMan Thank you!
@@GrandadIsAnOldMan how long did it take to built btw
@@ed1tz468 that rather depends on when you start the timer. If you have the cardboard, pencils, paperclips, glue, and tools all arranged ready on the table, and you know what you are doing, you can probably do it in half an hour but I would expect it probably takes longer. If you are looking to make a rubber band powered car and you are not restricted to the same components used in this car, then I would choose a different one from my playlists. Cardboard wheels and pencil axles are not very good choices. Further information is in my video description.
@@GrandadIsAnOldMan I have no restrictions, that apply to this car
Yes,it was very helpful ..... I am doing a paper mache carriage n wanted to have the wheels turn/roll. This is Great....Thank you.
U saved me man, I tried so many other ways to do this but it's so difficult your way is the best. 👍👍👍
Thank you. There are many more rubber band cars on my channel. You will find helpful links in my video description.
Wow guess I’m 5 years late :’>, but this really is a lifesaver. Now I won’t fail thanks to you UvU
If you need any help there are handy links in the video description. Thanks and good luck 👍
I made this car in a few minutes, and it works great! Thanks for the idea!
Thanks for the feedback Dave, I think the hardest part on this car was cutting good circles for the wheels.
GrandadIsAnOldMan you're welcome!
I needed this so bad! I'm doing a project that's extremely similar to this with a friend, and we both had no idea where to start. Hopefully this gave me enough ideas to help us win! Thanks!!
+Taylor K good luck, there are lots of useful links in the video description that may help you
Thank you very much for sharing this project. My son will truly benefit from your guidance while completing a homework assignment in which he was a little confused. Cheers!!
Thank you. You will find helpful information in the video description.
I also need this for my science project too,but tomorrow and I’m almost finished with the 🚘👍
Good luck with your project.
Woah! Thanks man! Helped me a ton for my project!
I’m doing this project for a second time because it was so fun when I did it from my science project which I actually did during Covid at the time, but my teacher just said it was one of the best projects
That is brilliant 😁😁👍👍
Shaima Sakhi asks "Ow big is the car? And how much does it weight"
The answer can be judged by watching the video. It is less than the weight of the cardboard box I started with and it will be different for you depending on what cardboard you can use. The width is "one pencil" because I use pencils for axles. The length is less than the length of the cardboard box you start with, mine looks about 2+1/2 pencils long. The wheels are the size of the cereal bowl I used to make the circles, so they will be whatever size your cereal bowl is, or whatever circle you choose to use.
I hope that helps as I do not know what materials you will use to make your car.
GrandadIsAnOldMan I'm doing this for a school project so... can I use XD disks as wheels and bottle caps as wheels? Would that be accurate with the base?
Aamna Aftab sorry I don't know what an XD disk is. If you mean CD and bottle caps, then yes that is always my first choice but this particular build was made from cardboard because I often get asked to use something other than CDs. I have hundreds of videos of rubber band powered cars and most of them use CDs. This is probably a good one to look at ruclips.net/video/pIO3FiHX4Oc/видео.html
Thank u I needed this for my stem class :)
Glad I could help! You will find helpful information and links in the video description.
I remember making these for a 6th grade science project. Quite fun. :D
astrangeone Yes I think that is where most of my requests for rubber band powered cars come from. People with school projects.
Very helpful! My rubber band powered car has to go 5 meters
Thanks and good luck with that, Jake. I test all my cars in my kitchen which is 5 metres long so as long as they hit the wall at the end I can be confident they will go over 5 metres.
I have over 80 videos on the subject of rubber band power in these playlists
Rubber Band Power
ruclips.net/p/PLA5a2xPRSrB1otXh0w36OwsYIHZznUWp6
Rubber Band Powered Car #8
ruclips.net/p/PLA5a2xPRSrB0zJ5RHjvsw46Mio6uJjF5_
GrandadIsAnOldMan thanks :)
This video may be the reason I passed my engenieering class :)
You have made my day, thank you 😍👍
@@GrandadIsAnOldMan k
Thank you for this!!! Imma make this for my project.. :D
need this for a project thanks
Check the video description for helpful links 👍
I know this is an old video, thanks for this btw gonna use in physics, but would you consider the rubber band used in this video a pulley? (as a simple machine)
Hi, thanks for watching and commenting. Regarding the pulley, I had not thought of it that way. I wouldn't think the band itself would not be a pulley but wrapping it round the axle probably makes the axle a pulley. I see Wikipedia has this definition "A pulley is a wheel on an axle or shaft that is designed to support movement and change of direction of a taut cable or belt, or transfer of power between the shaft and cable or belt."
GrandadIsAnOldMan Alright, thanks again for replying quickly!
Thanks a lot! Very helpful for my engineering design course :D
Thanks this will help me lots
I liked to thank you so much, this video helped me because I have a final exam except that we are making projects for our final exam which is a race between classes and who has the fastest rubber powered car. This counts for 20% of our overall mark and seeing as our teachers never taught us how to make a car, this was extremely helpful in more ways then others.
Thank you very much for your comment, it is great to know it has helped.
@@GrandadIsAnOldMan Hello 😊, I will be making this for my project but I just wanted to know if the car would still work if I replaced the pencils with wooden circular chopsticks/bamboo skewers!
I would be very grateful if you reply 🙌(i know im 9 years late haha)
When you add a comment to somebody else's comment, especially one that is 9 years old, RUclips often does not notify me. For future reference, you would do better to make a fresh comment. However, I have found this comment in my "Held for review" folder, which is where RUclips stores comments it suspects are spam.
The only reason I used pencils in this video was because I was asked to. I would recommend bamboo skewers. Much better than pencils as long as they are not too thin. You will find lots of information in the video description, including links to my Putarubberbandonit channel where I put all my new rubber powered projects.@@littlegobby
haha thank u very much i just thought u might not reply to my comment if it was new because then it would be all the way at the bottom! Thank you for the advice, will use skewers!@@GrandadIsAnOldMan
I was wondering if there is a certain website That I could go to that would help me explain the science behind the rubber band car (such as how and why it moves)?
Just type a question into Google and you will find some links. Try pasting this in "the science behind a rubber band car", I just did and found plenty of pages giving information.
Nice building skills!
Have you ever built a bogie axle vehicle? It should roll nicely over obstacles like the mars rover and lots of vehicles before it. Nice passive suspension.
Thanks, I haven't tried a bogie axle vehicle. In fact I don't know what one is. As far as I can tell from from looking at Google it would be a multi-axled vehicle with each axle individually sprung. I don't put suspension on my vehicles as they are just quick and simple so a multi-axle multi-suspension vehicle is probably not going to appear on my channel.
The nearest thing to that would be my rubber band powered train ruclips.net/video/kZcPErIt1w4/видео.html
or my 6 wheel drive rubber band powered car ruclips.net/video/bRjVzmcXPjM/видео.html
but neither have individually sprung axles.
GrandadIsAnOldMan Cheers! The way I'd describe it is that you have wheels sprung in pairs simply by giving them a common central pivot. Both wheels stay grounded, weight perfectly distributed, even when one encounters an obstacle or pothole.
I appreciate the simplicity of your builds. I may try if I can build my own, and test it for roll-over capacity against an unsprung counterpart.
Thank you!
Thank you so much! I did this for a science project with my mom and she was really helpful but so where are you! I hope I get a good grade on this. This was very helpful and I’d rate this 9.5/10 because it was a TEENY bit long (when we made it) (-3) and it was a a short ride on ours(-2) but otherwise BEST THING EVER!!!
Hey thanks for the feedback and congratulations on your results :-)
Kawaii_Cupcake very
Thank you so much you saved my grade in Science!
Hey that's great, thank you. I am glad you edited your post as it showed as your grade in Spanish first and that really confused an old man like me 😊
GrandadIsAnOldMan Yeah I put Spanish absentmindedly ha ha
😊
That video is very helpful to me i'm in 8th grade and I have to build a newton scooter and I'm going to do the same one thanx
Good luck with that. There are plenty more designs in my Rubber Band Power playlist ruclips.net/p/PLA5a2xPRSrB1otXh0w36OwsYIHZznUWp6
GrandadIsAnOldMan i am actually gonna do the smallest rubber band powered car thanx again :)
Tanya B good luck with that, the main problem with the small cars is getting enough grip to stop the wheels spinning.
The paperclip axles or whatever won't stay in the cardboard and they keep popping out. Any advice on how to get them to stay? Thanks
Glue or tape? or maybe even bend little hooks on the ends of the paperclips.
GrandadIsAnOldMan Ok thanks i will try that.
how where you able to make it go straight? also do you know how one could make it go 3 meters, stop, and then reverse for .5 meters?
Hi Fluvia.
1. Going straight is easy. Just take care to get your wheels straight on the axles and get the axles parallel front and back. If you take care cutting the chassis so the front and back are parallel and take care gluing the axle tubes in place then it will run straight.
2. Running 3 metres and stopping is fairly easy and I have some cars in my playlist that do that.
3. Running about 3 metres, stopping, and running backwards is fairly easy. You just attach the rubber band to the back axle so it is fixed. When the car runs forwards it unwinds the rubber band, goes past the point where the band is attached and the momentum of the car starts to wind the rubber band up again until the car slows down, stops and then unwinds in the opposite direction running the car backwards.
4. Getting it to go exactly 3 metres forward, stop, and then run exactly .5 metres backwards is a bit more challenging. I did something like it last year with this car although you would need to trim it to get the distances you want. The motor is far more powerful than you would need and you could make a smaller car, I just modified one I had already.
Rubber Band Powered Car #8 goes forwards and backwards
ruclips.net/video/bBU8UngaFfM/видео.html
a. Make a fairly long car to give you a long enough rubber band motor to work with.
b. Use a short rubber band motor about half the length of the car and attached to a string that wraps around the axle.
c. Put a short peg in the back axle.
d. Tie the string to the axle so it is fixed and cannot slip.
e. Wind the string around the axle so it can travel .5 metres
f. Turn the string round the peg then wind it round the axle in the opposite direction enough for the car to go 3 meters.
g. When you release the car it should travel 3 metres, stop, then come back .5 metres.
h. If you put rubber on the wheels it should help to stop the car sliding when it stops to come back.
There are a lot of rubber band cars in my playlists
ruclips.net/p/PLA5a2xPRSrB1otXh0w36OwsYIHZznUWp6
ruclips.net/p/PLA5a2xPRSrB0zJ5RHjvsw46Mio6uJjF5_
GrandadIsAnOldMan Thank you so much!
thank you sir this video helped me pass my science class
That's great, well done 😊👍
I followed the directions exactly but the rubber band gets stuck so it won't move what should I do?
Hi! I love your simple car designs. I am a elementary school teacher and would like to start a project with my students to create simple cars (either using a rubber band, balloon, or possibly a small motor to make them go). I would love to know what are the most important design elements my students should learn and think about when making a car. Any help would be much appreciated! I don't have much experience with this sort of thing, but it is something my students are very interested in. Thanks!
Gosh, there are some many things you can learn when making these cars it is difficult to think where to start. Right at the start there is the issue of safe use of tools and which tools are the right tools for the job. Next I would think about which materials are being used and why (weight, rigidity, flexibility, durability). Then we get into physics and laws of motion, power to weight ratios, leverage, gearing, friction. I guess there are even human relationships, sharing, team work, competitive practices. I had better stop there because my mind is now drifting, what was the question :-) Oh yes, important design elements. Keep it simple, understand what the task is, do the minimum to achieve the task. I think my simplest cars (Cardboard rectangle, drinking straws, barbecue skewers, CDs and bottle tops) are as good as any of my more complicated builds, easier to make and easily adapted. Hope that helps.
Thanx dude its amazing
Thank u man, it makes it so easy but if I make a sturdier model, can I use balloons for nitro/boost
+TBNRRaceBoy 02 I guess that is something you will have to try for yourself
Ik I'm late , but if I do same thing with bigger pieces do you think I could make it life size?
If you want to go life size then you need to go something like this - ruclips.net/video/DYCu4i1daPI/видео.html
Hey ms. Couch Murphy if your reading this hi one of your students here
How do you make it go even farther than that? Also it keep turning right, how do you fix that?
Further - more power
Turning - are the axles parallel - are the wheels spinning
I will paste my standard list of tips below (It may take you a while to read through it all) -
Fault Finding on a Rubber Band Powered Car
1. The rubber band does not connect to the front axle, some people misunderstand the videos and attach the rubber band to the front axle as a convenient anchor. That stops the axle turning. Make a different anchor point, study the video again.
2. Does the car run forwards freely if you just push it without the rubber band connected?
If it does not, make sure that the axles are free where they pass through the body. You may need to enlarge the holes where the axle goes through the body or use larger tubes for the axles to go through.
Are your wheels round with no flat spots. You may need to trim them.
3. Do the wheels rub against the body of the car?
If they do, the friction will slow the car or even stop it moving.
Put some spacers on the axle between the wheels and the body to keep the wheels clear. Discs or washers cut from plastic or cardboard should work.
4. Do the wheels spin evenly when you watch them?
If your axles do not pass through the centres of the wheels, the wheels will not spin evenly and this makes it harder for the car to run, so you will need to make new axle holes, taking more care finding the exact centre.
6. When you wind the rubber band round the axle do the wheels turn at the same time or are they slipping on the axle?
If the wheels are slipping on the axle, the rubber band will unwind without the wheels turning on the ground. You need to do something to stop them slipping. Glue them to the axle or wrap tape round the axle where the wheels are to hold them in place.
7. When you release the car it does not move, but if you lift it in the air, the rubber band unwinds and the wheels spin OK.
Either the ground is too rough or the car is too heavy. Try the car on a smooth surface, make the car lighter, add more rubber bands.
7. Wheel spin. When you release the car, do the wheels spin without the car moving forward?
You do not have enough grip on your wheels. Either add some weight to the car to help the grip or put something on the wheels to improve the grip.
Things that will improve grip - hot glue all the way around the rim like a tyre. Rubber bands stretched across the wheel. A strip of rubber cut from a balloon stretched around the edge of the wheel. Strip of rubber cut from washing up gloves or disposable rubber gloves.
8. Trouble connecting the rubber band to the back axle? Glue a short stick to the axle to act as a hook for connecting the rubber band.
We are trying to construct a rubber powered car that can go as "far" as possible. It doesn't have to be fast. It just has to travel as far as possible and as "straight" as possible. Can you please recommend me a design? Or at least give me a general idea of what critical points I should be aware of while designing my car?
This is a fairly regular question.
I am assuming you have some set criteria for number of rubber bands and size of vehicle so putting those aside. The first point about travelling fast or a long distance is minimising your friction because that is what wastes your power.
1. Friction caused by badly aligned wheels rubbing on the bodywork should be easy to fix by adding spacers to keep the wheels clear.
2. Friction where the axle is attached to the bodywork is reduced by making sure the axle bearing surfaces are something that does not bind together. Wood and cardboard are not good. Metal surfaces are better. Steel and brass is good. Ball race bearings would be even better. Whatever you have, even if it is just wood and cardboard, you can improve by making sure there is clearance so they do not jam together and maybe rub some graphite from a pencil where they make contact might help.
3. Friction with the wheels to the ground can be a mixed blessing. Minimise the friction of the front wheels by using very thin wheels, however you may need some grip to ensure they keep the car going straight. The same applies to the back wheels, assuming you are using the back wheels as the drive wheels. However if they do not have enough grip they will spin under power and that is all wasted energy. Thin wheels with rubber tyres would be best in that case.
Larger wheels take more effort to get them turning but once moving they have the momentum to keep rolling when the rubber bands have finished. You could experiment with different sizes to see which work best.
You could use some sort of gearing to start with a large gear to get the wheel moving and then a smaller gear to maintain the motion. There are some examples in my playlists.
Reducing unnecessary weight by trimming the bodywork a little may help but make sure you don't loose grip and start the wheels spinning if the body is too light. It may bend or break under tension so be careful.
Another trick I have found helps is to stretch the rubber band as you wind it round the axle so you get more turns round the axle, this can make a significant difference compared to just winding the band normally.
If you can only use a short rubber band, connect it to the axle using thin string so the string winds round the axle stretching the rubber band. Thin string will give you more turns round the axle than thick string.
This simple one does 12 metres ruclips.net/video/pIO3FiHX4Oc/видео.html with just 1 size 64 rubber band.
There are several reasons the car might turn to the right - or left - here are some I can think of.
1. Your front axle is not parallel to your back axle so the car has an inbuilt turn. A quick check would be simply to push the car forwards without the bands connected and see if it turns.
2. When you tension the rubber band the body or the axle is flexing creating a turn. Try winding the band to one side of the axle. Looking from the back if you wind it on the right it pulls the right side of the axle forward turning the car right. If you wind it on the left it pulls the left side of the axle forward and the car goes left. ruclips.net/video/IErkUylbG9c/видео.html
3. Probably most likely, the wheels are spinning under power allowing the back of the car to slide to one side. Fix this by adding extra grip to the wheels such as a strip cut from a balloon or rubber gloves stretched around the rim of the wheel to provide a rubber tyre. Here is a link that shows this ruclips.net/video/ZnuPnveCbxs/видео.html
4. The front wheels are sliding sideways under power, fix this the same as '3' above.
5. One or more of your wheels are binding on the side of the car causing it to turn.
6. One or more of your wheels are not round and the unevenness is causing the car to skip and turn.
7. Your wheels are not the same size so the car turns towards the smallest wheel.
8. Your axles are not level with the ground and the car is running on only 2 or 3 wheels. This may be the body flexing and not show until the rubber bands are wound up and under tension.
The two most important factors for acceleration and speed over a short distance are the power of your motor and the grip of your wheels. If you don't have the power then your car will not move fast but if your wheels don't grip then any extra power will just spin the wheels and the car won't move. If you have a fixed amount of power by being limited to the number and size of bands you can use then you can increase your acceleration by enlarging your back axle. I wrap stuff around the axle to make it thicker. That will increase the acceleration but probably reduce the total distance your car will travel. If you are only going a short distance that probably won't matter. You can also use smaller wheels to increase acceleration but you will find it even harder to get good grip with smaller wheels.
Some helpfiles
Making the CD wheels ruclips.net/video/ZRrjBuWfmrM/видео.html
CD Wheels with Cardboard Hubs ruclips.net/video/Js1rtn2IGTE/видео.html
Putting rubber tyres on CDs ruclips.net/video/ZnuPnveCbxs/видео.html
Connecting rubber bands ruclips.net/video/EbYuhdwknbs/видео.html
Connecting the band to the axle ruclips.net/video/0wPYxloUFJQ/видео.html
@@GrandadIsAnOldMan Thank you so much!
@@kothaihari7936 I hope that information helps 😊👍
This guy is a physics project genius
Haha, thank you, no I just try things out and see what works 😊
Hi Grandad,
Me and my boys (8) and (6) just love your shows. We've made rubberband, fan and motor powered cars based on your videos.
My six year old, Aiden, wants to put a hammer-like contraption on the top of one of his cars. He built a hammer-like thing (about 4 inches long) and we attached it to the body of a little lego guy (sans the head) and attached the lego guy's butt to the top of the car so that the lego guy acts as a hinge and the hammer can move up and down. Aiden said, "let's ask Granddad how to make this move!" He wants to motorize this up and down action, and I have no idea how to help him.
The body of the car is a Pringles can, so it's cylindrical, with a diameter of maybe 3-4 inches. The tires are nice big tires that we pulled out of a building kit.
Hope this makes some sense. Looking forward to your thoughts.
Ichiko
I would suggest a cam on the back axle that hits a rod that is attached to the hammer. If I have time I will have a look but I am rather busy this week-end so it may be a while before I get to it. Another option would be something like I did in this project ruclips.net/video/FBlrb1Xeh2g/видео.html
GrandadIsAnOldMan .I guess that the hammer would have to be on a free swinging hinge so that if something hit it, it would go up in the air and come back down again. The lego man hinge stays in whatever position you left it in, so I'm not sure that would work for us, but Aiden is looking forward to seeing anything you might come up with. Thanks!
Sorry for the late response but AWESOME hammer action. My son loved it and we all got such a kick out of it.
By the way, if you get the chance, can you explain what the big black blob on some circuits are. I think you actually refer to them as "black blobs".
Thank you!
The black blob is the circuit board containing all the circuitry that has been designed for a specific purpose for whatever the toy or component does. It is the same as a chip. I have no idea how they are made although I would guess it is a similar process to making a chip but somehow sealed directly onto the board with a few larger components added to the board that could not be miniaturized in the same way.
Ichiko Sudo
What did you grip the rubber bands to? I know you gripped it to the axle but what about the other side?
In the video at 7:58 I show that I fix a paperclip to the cardboard to connect the rubber band at that end. Is that what you mean?
GrandadIsAnOldMan
oh yes thank you!
GrandadIsAnOldMan how did you push the scooter of? When I tried it, the rubber band just stayed tied to the pencil so the scooter didn't move
Girish Bedekar I can only guess that something is too tight stopping the wheels from turning. Did you bend the paperclips round the axle and allow free play for the axle to spin 4:58. All the wheels and axles should spin freely without the rubber band connected. Have you attached the rubber band to the paperclip at the front end 7:58. It must not foul the front axle.
Seems like we're all doing this for a school project!
+Is mY life Diaura it's a regular request every year. If you look in the video description there are some useful links. I have nearly 200 different rubber band powered cars in that playlist.
+GrandadIsAnOldMan Thank You so much!! This saved my life, I'll definitely check the other ones out!!
Needed this for my Invention and Innovation class. My teacher's a dick and hates my guts, so thanks for this.
There is some extra information in the video description that might help 👍
I have to make a car for my science class but it has to go exactly 15 meters or really close and it has to be fast what advice can you give me ?
Nanci Melgoza there are several videos on RUclips with braking mechanisms that will stop the car at a certain distance. All of these videos are my simple version that just uses a length of string winding up round the axle to measure the distance. It is not very accurate when you cover longer distances.ruclips.net/video/vc0URTIqdSA/видео.html
ruclips.net/video/b3R35C49MSI/видео.html
ruclips.net/video/ahbQF5AyF9Y/видео.html
ruclips.net/video/-ACctRhxhDQ/видео.html
ruclips.net/video/yIZo0ksZc1M/видео.html
This is my playlist that includes other people's brake mechanisms
ruclips.net/p/PLA5a2xPRSrB3MyidvKMT3DqU1vNy9Atsf
thanx ill make sure to watch them(:
thanks this will help on my project in school THX
Good luck with your project. There are some helpful links in my video description 😊
What kind of energy does this car use. Cause i need to know for my stem class
When you wind up the car's axle you stretch the rubber band and store potential energy. When you release it the rubber band starts to unwind, and the potential energy is converted to kinetic energy as the car is propelled forward.
@@GrandadIsAnOldMan ok thank you very much
awesome skills
Thank you
You are really smart I saw all your vid'
Thanks Jerry.
Great...hope it helps us with the my sons project
Good luck, you will find useful information in the video description.
Thanks i will read it
Will this car make it over a small lump if i glue 2 of those wheels together and fashion a tissue box on top? +GrandadIsAnOldMan
mosttt helpppfulll forrr meee...
+rimsha sattar I guess this one wasn't so boring for you then.
hi, is there a reason why did you make the wheels so large? do larger wheels yield to greater distance?
+MsMizlicious in this video I talk through the differences between small wheels and big wheels - Rubber Band Powered Cars - Looking at the MATHS ruclips.net/video/HNcA04ojF0s/видео.html
So helpful
How Would I make it with a DVD instead of cardboard wheels because it would be very loose?
If you want to use CDs for wheels the option I use is to fit plastic bottle tops as the hubs, see this helpfile Helpfile - How to use Bottle Tops for CD Hubs
GrandadIsAnOldMan Thanks!!! It really helped.
Matthew Yee that is good news, I am glad it helped.
Hey I have a problem I winded up my car but it won't go what should I do?
hi grandadisanoldman
can I use loom bands instead of whatever u used???
thank you
Yes you can, loom bands are just small rubber bands. I have used them on several of my cars. You just need to double them up if you need more power, or make several strands. Here is a simple one ruclips.net/video/fjpZ6hYZc-4/видео.html
ok thank you
I'd find the center by drawing a radius (twice) from the outside for half the diameter. They'll cross in the center.
Yes that will work if you have a compass to draw the radius. Folding the paper like I show needs no special tools, just a pencil and scissors.
Very helpful thank you
Thank you.
very nice car
Thank you
Dear Grandad:
I just bought a Model car that has the wind up already. It's the little plastic gears. Can you show us how to take the "motor" apart and maybe even make it go faster? Thanks!
From: Poet
Hi Poet Wells, I do have some videos showing the insides of "clockwork" type motors but as for making them go faster, there isn't a simple fix. You would have to change the gearing or even replace the spring and neither option is very practical. You might just have to look at reducing the weight of the car to allow it to go faster by removing parts that are not needed. Maybe change the size of the wheels. Smaller wheels will allow it to accelerate faster. Larger wheels will give it a higher top speed but it will be slower starting. Here are a couple of related playlists Clockwork playlist ruclips.net/p/PLA5a2xPRSrB1D-93lQxyjysBGrhqkQn52
Pull-Back toys ruclips.net/p/PLA5a2xPRSrB2KoevWC9Nu0xYmBHyZw50O
Disassembly/Tear down playlist ruclips.net/p/PLA5a2xPRSrB1GrgALJEle2lVqOrR1sX6V
Thanks for your advice grandpa!
i have to do the project tonight because my other one failed just now! can i use any pencil????
You can use any stick that is long enough and strong enough. I only used pencils because I was asked to.
I'm using cd's as wheels and it doesn't even launch. The wheels keep wobbling onto the floor and the pencil is loose. I don't know what to do.
+Neon Snow I don't know how you have attached the CDs to the pencils so I cannot guess what your problem is however if you look in my video description there are some links to help files on using CD wheels.
Nice ideas
Thank you 😊
Hi! Do you have a few measurements for this car?
No I didn't use any measurements, but I would guess it was 4 or 5 inches wide as it needs to be narrower than the pencils I used for axles. I made it as long as the pieces of cardboard I had available. Looking at the video and comparing the length to the width I would guess that was at least 12 inches long, maybe a bit more. There are several useful links in the video description to help you. I have hundreds of rubber band car designs.
@@GrandadIsAnOldMan
Thank you so much!
What is an advisable dimension for the base if the car??
Keep it simple. The width needs to be less than the length of your pencils or you won't be able to fit the wheels. The length depends on what cardboard you have available. The longer it is, the more rubber bands you can use, so it will go further. A longer car is easier to keep in a straight line. I would think 12 inches or 30 cm is a good length and as I said, the width would depend on your pencils. In response to a recent request I made a new version of this using tape to hold the paperclips in place ruclips.net/video/QKgfNWTa0e8/видео.html
tell me the way to make a CD ROM and dvd withe card board
how do you do the 5th paperclip it was to fast for me to see? Btw awesome video
catlin ethridge it doesn't matter how you bend it, you just need a loop showing at the top so you can attach the rubber band. I opened it out to straighten it, then bent it into a U shape, pushed it into the cardboard and bent the loop up so it shows at the end. If you slow the video down using the settings option you can see this, but I understand this is a problem.
Helped a lot got an a on my project thank you
Thanks for the positive feedback, I am glad to hear it helped :-)
Can you make a rubber and powered car that is strong enough to carry one pound of baking soda? I have an engineering fair I HAVE to do... Thanks!
Here are some of my cars carrying heavy weights. The main issue is making sure your wheels and axles are strong enough to take the weight. If you use CDs then use 3 or 4 side by side for extra strength. The last link here is not rubber band power but it shows how heavy you can make something and still use CDs for wheels.
Let's carry 4 lbs over 3 m using #8 design ruclips.net/video/1tq2GE-PnZY/видео.html
My Rubber Band Powered Car #4 carries 5 lb for 2m ruclips.net/video/JFi8AKVAmPo/видео.html
Bargain Store Project #59 Floor Mop Gravity Powered Car
ruclips.net/video/Q70t5v8RNTU/видео.html
That’s good
Don't forget there is more information in the video description.
That was a good video.
Thank you, you will always find more information in my video descriptions.
THANK YOU!
I hope it helps. If you need more information then please check the video description 👍
Very easy good
Thank you. You will find useful information and links in the video description.
very helpful hope i get good grades
Good luck
How many rubber bands did u use for a simple rubber band powered car???
I don't know, I didn't count them. Looking at the video it looks like 6 or 7 and they look quite thin.
What is the diameter of your cardboard wheels?
I just grabbed a handy sized bowl and drew round it. I prefer to use CDs which are just under 5 inches diameter (120mm). I think that bowl I used was about 6 inches in diameter (150mm). The smaller your wheels, the more likely they are to wheelspin, which you don't want. If the wheels are too large, your rubber band may not be powerful enough to get them moving.
please help me, i need to make a rubber band car that goes 3 feet and stay on a one meter wide track, will the car in this video work or not if it does then thanks and if it doesn't then can you make a video if it.
+The Master Of All Video Games I think any car that goes 3 feet should stay on a 1 metre wide track as the track would be wider than it is long. The distance they travel is directly related to how well you make them. If you minimise the friction on the axles then the car will continue to freewheel for a long time after the rubber band has finished. Same with the car going straight. If you build it so the back axle and front axle are parallel then the car should go straight. It will turn to one side or the other if your axle is too weak and is bent by the strain of the rubber band. It will also turn to one side if the wheels spin and slip under power due to lack of grip so making sure they have good grip will help.
In the video there are two wide red lines on the floor. They are 3 metres apart so you can see this car travels over 3 metres easily. It also goes straight enough to stay within a 1 metre track.
There are helpful links in the video description including this one for my Rubber Band Powered Cars playlist which has 170 videos in it ruclips.net/p/PLA5a2xPRSrB3g5RiX8Kf_uUBOL0Tb7AS0
+GrandadIsAnOldMan Also can i use cds and wheels
The Master Of All Video Games the only reason I used cardboard was because I was asked to for this project. I would always use CDs given the choice as I find them very good for this sort of project. If you look at the rubber band car playlist most of them are using CDs
Why the is the lem sensor
That is awesome
Thank you Tatiana.
So awsome
Thanks Donny.
You really need to slow down when you are putting the rubber bands on the car and explain because I'm having troubles finding how to do that in any of your videos.!
Try pausing the video at about 8.20 and if you are on a PC you can slow down the video speed anyway by clicking on the settings.
How did you do the connector?
Connector? The rubber band is attached to the chassis at the front using a paperclip 07:58 and the rubber band is just wrapped around the pencil axle so it wraps over itself to hold it in position 08:45
Veryhelpful
Thank you, you will find more information in the video description 😁
I don't have enough rubber bands to make that car so can you shown me how to make a car that uses less.
Caio there are 128 videos in my Rubber Band Power playlist, some use more rubber bands and some use less. The number of bands is fairly irrelevant as you can get a complete range of sizes so one big rubber band can be bigger than a dozen small ones joined together. I just buy a pack of the cheapest I can find and use as many as I need for the project I am building. The shorter the body the less rubber bands you need or just extend the length with a piece of string.
ruclips.net/p/PLA5a2xPRSrB1otXh0w36OwsYIHZznUWp6
i like all of your videos
Thank you, goldy.
welcome
can you make a musical guitar ? please
goldy vijay I will have to think about that. I see a couple of issues. I think it would take longer to make a good one than I really want to spend on my projects. I have no musical skills so even if I made one I would not be able to play it to demonstrate it. Maybe a very simple one with a cardboard box and some rubber bands.
goldy vijay I did my best for you, hope you like it. If you look through the comments, somebody else has left a link to one that they made which looks really good. ruclips.net/video/yfjs-GLkZMU/видео.html
thank you GrandadIsAnOldMan
Your too good.Try making a 100% cardboard car that can travel 1 meter.LOL that's impossible.
So 100% cardboard? What would the power source be?
GrandadIsAnOldMan I don't know. That's why it is impossible .
If I really wanted to, I am sure it could be done using a stiff piece of cardboard as a spring to provide power but it would take far longer to make than I am willing to spend on a project. All the parts would have to lock together without glue to be 100%
In fact as you have put no limitation on size or weight I have just thought of a way to do it easily using very big wheels and gravity.
GrandadIsAnOldMan Can you try making a air powered rocket.
GrandadIsAnOldMan You can use glue or anything as long as most of the car is cardboard.It has to be at least 15cm long and 5cm wide.
good car
Thank you 😊
how many rubber bands?
As many as you like. Rubber bands come in different sizes. You want the length of the rubber bands to be slightly less than the distance from the front of the car to the back axle, That is to ensure it comes off the axle when it has unwound. If it stays connected, it will start winding up the wrong way round and stop the car rolling. If you are limited to one, you can extend it using string.
how many rubber bands did you use
+Zainab Jackson I don't know, does it matter? At 09:00 I think I can count 8 of them. It depends what size you have available. If you can only use one you can use a piece of string to get to the back axle. Here is a good example ruclips.net/video/pIO3FiHX4Oc/видео.html
cool im going to make this car for my science fair project..... but first am i allowed to copy it off of you?
That is awesome😱ahhhhhhhh🤐☠️i am dead
Thank you so much!
There is helpful information in the video description, if you need it 😁👍
How long is the chasis?
As long as you want. The longer it is, the more rubber bands you could use to power it and longer chassis tend to go straighter. If it is too short, then the back wheels might rub against the front wheels.
Your awesome
Thank you.