Apologies for using KM/H if you prefer MPH! The reason for doing so was to have more definition at these very slow speeds as my GPS doesn't show decimals. Here's a conversion to MPH of the final cars in each class (spoilers below)... Pure Lego Car - 7mph Rocket Car - 23.4mph RC motor Car - 26mph Thanks for watching! Will be back soon with another video (hopefully within the month) ☺
Hey man ..i love ur videos ...i just want to say 1 thing that jarrd my nerves about this ..U CHEATEDD ...I CANNOT CREATE YOUR OWN LEGO BRICKS ..U HAVE TO USE WHAT LEGGO HAS GIVEN YOU ....ANYBODY IN THE WORLD OF LEGGO KNOWS THIS ....I HEREBY CALL FOR A REDOO.
@@conanobrien1 yeah, youtube channels that use only imperial without metric conversions (especially for natively metric measurements) should apologize
Perhaps you could partner up with someone who is more versed in building with technic lego. For starters i could see a use in suspension to offset the bumpy roads you use, and a wider track for higher stability. And there are much better wheels available in Lego. And perhaps a gym floor would be better suited as those are typically fairly large and exceptionally flat and smooth. A indoor location would also rule out weather conditions.
Well, you definitely managed to make me laugh. Is it possible LEGO designed it’s motors for kids in such way that the parents don’t throw the whole kit in the bin after one time use?😂
Honestly would have liked to see a bit more restrictions/rules as it does seem like you could have just stuck a lego brick to your existing rc car at that point and called it a lego car by how some of the final ones were propelled. It seemed less about optimising the lego part and more about building the most basic chassis and sticking a rocket on it.
@@Ziegeri That's the whole point. You have to test and figure out ways to push the limits. This video is like saying you're gonna tune your car for more performance and then just going to a dealer and trading it for a Lamborghini.
All of your cars were pretty flimsy. If you don't mind adding quite a bit of weight, you can make them much stronger. However, the surface you're running on will always be an issue unless you use suspension.
What your lego cars need is suspension. The Channel Brick technology has made a video where he compares different types of lego technic suspension designs. A differential would also help against wheel spin.
48 years ago, using the same rocket motors, Estes C6-5, my friend and I built a Lego rocket car. The car disassembled in rapid fashion on the first three attempts. However, we discovered using Large Lego wheels, 2" in diameter with a 1/4" wide tread, and lengthening the vehicle to about 2' long AND using a new invention called Krazy Glue. We had three successful runs. Using a stop watch and a blacktop basketball court to measure speed, Lego Landsmasher IV went an astounding 26mph.
The 3:30 variant reminds me of the "Dolmette" chainsaw driven motorcycle 😁 The last car just had no chassis at all, you basically just bolted two axles to a flimsy wooden board. Just with some simple chassis building, triangulation and so on you'd have a car that survives the stresses.
Tether car that goes around in circles tethered to a central post would be good to try also. There used to be a guy that brought a whole set up to Old Warden model days with some high speed petrol engined tether cars running on a circular portable road - they were quite exciting to watch.
there's 2 improvements you can do first adding suspension to help the car to keep its wheels on the road (it will increase the weight, you'll need to take care about the suspension travel and lego shock absorbers aren't the best but it will absorb the roughness of the road and will improve the stability) two : don't forget to put a caster angle on your steering to improve stability the vehicle is very light so the stability is really important
bro just looking at this makes me cry 3:10 there is such a tiny fraction of current going to those motors. Also people have made genuine LEGO cars that go faster
I've built a lego space capsule that had an actual little minifig that I could mount on a model rocket. I could send you the instructions I made with the part list if you want another fun lego project.
I dont blame you for thinking that lego does not hold up well because its plastic, but if you just look at a couple of images of lego technic, you can really get a feel of how strong lego technic can be. you just have to use it properly!
There are some very talenten Lego RUclipsrs out there that can and have designed cars with superb suspension and frame strength. I feel like a collab is needed herr
Hm maybe if you had a wider chassis and a bit of suspension it would help with the bumpiness of the road, and be able to have more control at higher speeds.
Idea: wider wheelbase! Also, maybe double the Lego struts. Maybe Lego 😁 Rocket car could go a lot faster if it had the servo steering (maybe with steering assist too?) And a Lego housing to hold the force of the rocket (vs hot glue).
Yeah so that much Lego motors should definitely go on different battery boxes and different ir recievers BC you were overloading them, and definitely if you want speed or power. And you probably don't know but the different motors have different speeds and powers.
This is a really sweet video. I"m an adult fan of LEGO and must be very naive for I was hoping for faster speeds. I must say, you have incridible determination. I loved the model rocket engines on the cars. They really reminded me of the long, slender, rocket powered LSR-type of car. Thank you for this video and best wishes.
When I was about your age (guessing) a long time ago, I also made a rocket Lego car using the little Estes A motors, and went through much the same progression. 1st car, too short, tumbled immediately. 2nd car longer, took off ok until thrust overpowered it and it tumbled at about 15' range. 2nd car v2.0 - added vertical stabilizer from rocket kit. Success...until front end exploded from road vibrations. 2nd car v2.1 -- taped front end together: SUCCESS! Car traveled straight down road until ejection charge in motor went off.
As a kid we build lego technic cars and dragged them after a bike, to see what car could fastest before breaking. Rubberband-suspention. Wide car. Vertical lego bars with pegs, to clamp it together.
1 of the most important parts to go fast = to have a good and stable chassis to start with. the way you are connecting the lego parts is not strong/stable, and a smooth surface is a must. however this again was a entertaining video
Hi James, big fan of the channel. Here's an idea for something that seems to be right up your street in terms of techniques. Why not try making an RC plane which has an EDF/Prop for low speed flying and a rocket for high speed flying. I know you've got something like this in the past but the new twist I thought you could put on it would be to take inspiration of some military air craft (like the F111 and the F-14) which have a variable wing geometry design commonly called swing wing. This way you can have the wings out for low speed take off and landing and then sweep them back in flight for a really highspeed rocket assisted run.
Half way through, still objects take a lot of force to get start moving so I would have gotten something to get it started going a speed of like 2 before setting the rocket off because a lot of issues seem to be the nose dragging the back and flipping the thing side ways rather then going with it, forward.
Tip:: when attaching anything with an lcd screen onto one of my RC vehicles/creations, or using it "in the field" for this sort of experimenting, the moment i get the monitor/sensor, or whatever it is that has a shiny screen, is I first peel off transparent packing tape from a roll, cut to fit, and apply it to the shiny new screen. Sometimes i wont even cut to fit, because i know ill be replacing that packing tape "screen protector" sometime soon. Thought this *may* be helpful... with future speed monitors or whatever else... that has a nice new shiny screen someone wants to protect
Great video but its a crime you hooked like 7 PF XL motors to the same battery box a stock lego battery box can only really power 2 PF XL motors at full power, also some suspension and Akerman steering geometry would have helped alot
When I was a kid, my brother and I used to build cars out of Legos to see if we could build one that would stay together when sent down all 11 stairs in our house. Everything was carpeted at the time so it was just a matter of them surviving going from one story down to the other. Legos seem to have been different then as most of the blocks were thicker than that and we didn't have any of those longer ones with holes in the sides either so I would say that they were more robust. The common problem was that the wheels just clipped onto these little plastic clips on the side of blocks made for that so the wheels would usually fall off and sometimes they'd pick the entire brick off of the car with them, plus we entirely broke a few such bricks at the little attachment point that clipped into the hub of the wheel. There had to have been loads of friction too since it was just a plastic on plastic bearing. The other thing that happened was that bricks would fall off of the outsides of our cars or whole sections would if we tried to put any hollow space inside the car. There were no Lego motors or any electronics whatsoever back then and this video is actually the first time I've ever heard of such a thing and now I want some! It was all push-powered stuff back then though. There were RC cars and we ruined several a Christmas/Chanukah present sending them down the stairs to see what happened, although I don't know why we didn't expect them to break even more efficiently than our Lego cars. This is obviously why we only sent a couple of them down the stairs before we realized that they'd all just immediately be destroyed. Seeing all the cool parts I could have harvested from them, I wish I still had them, although I doubt the parts really would have avoided oxidation after all these decades. All of the controllers were likely shittier back then too but I don't know since I've never owned one of these newer ones. The newest remote control thing I've ever owned was one of those cheap RC helicopters that you can fly indoors. I will say both that I suck at flying helicopters and that it was very funny to watch my cats chase and catch the helicopter.
Been watching you since the beginning bro. I'm so surprised you haven't hit 1m subs like I LOVE watching you. I wish I could watch a video every day. Keep it up. Proud of you. You'll hit 1m in no time
Just a quick note, assuming 100% efficiency from the motors the absolute maximum horsepower you would get from 8 xl lego dc motors is about 0.043, not 0.1. Realistically your looking at 60% of that, so around 0.02 horsepower
You should build a rideable ekranoplan. It's sort of like the hovercraft, but it would still be pretty cool, and a rideable ekranoplan could be a transition to rideable planes.
Maybe front mount the rocket motor, firing rearward in the mouth of a car-length augmenter tube (passive venturi?) Questionable stability gains perhaps, but . . . 'Bring on the noise!'. . . & maybe a servoed (flameproof) rudder! : )
You need to look into some actual lego building techniques to make the things you make stronger. Instead of just placing beams directly on top of each other, if you place two single plates between them, the holes will line up at exactly the right distance so you can add vertical beams connected with pegs. This will make a much stronger structure.
Just an idea, try putting rings on the bottom side of the chassis. Then running some fishing string as a guide to keep everything a little more consistent. However it will create drag. Your videos are awesome 🤙🏼.
You coud do so much more. Make the chassis much more durable by adding interlocking vertical and diagonal stiffening bars, add a suspension to all 4 wheels to improve ride quality, and adding a few of theese 6X2 weight bricks filled with metal for trimm and balancing everything out.
For your next lego project, How about testing different existing Lego car kits with steering built in, modifying them top fit motors and servos and gradually upgrading the kind of motor you put in it and see where they start to fall apart? For example you could compare a relatively cheap kit like #42122, then go up in the price ranges, and see how they compare? Kit #42160 could come next, and then #42125 #42156 or #42096, and at the end you could have the most expensive cars, either the Lamborghini #42115 or Ferrari #42143.
I build some Lego RC Cars with BL Motor too. And i can beat the 50 km/h without bearings and with only 2S Lipo Batt(7,4V). I lubricate the moving parts whits Glycerine. This will work fine. If you want to drive on raff roads, you have to add a suspension on the car. This will make it a lot more stable if you have not a plane ground. A steering Gyro ist also very helpful at high speed. You can reach 70 an more Km/h with the BL Motor you use in the Vid. Im sure.
I feel like shock mounting the rocket motor on a linear compression spring would reduce issues, as it would act like a capacitor/inductor smoothing out the high jerk from the motor. Basically it would go faster/further if the motor was mounted on a spring... Maybe?
You should look up the 3 different Lego PF Motors...You switched from a single M-motor right away to several XL-motors...XL-motors have the lowest speed, but highest torgue out of all PF Motors...
A flywheel approach with larger wheels should work. Your main problem is that the wheels are too small, causing the car to spin out of control at a certain speed. A flywheel could potentially be enough force to run the larger wheels at high speeds.
Building the fastest “Lego” car…by trying to pair a Lego build with non-Lego propulsion? Might as well just take an unpowered Lego car and put in a carry-on bag on your next airplane trip, and claim it’s the fastest “Lego” car at 550mph!
Did you try to power 8 XL motors with a single Lego battery pack? Voltage drop on that would've likely been insane and I wouldn't be surprised if it would've been faster with less motors connected to it.
There are Lego parts you can purchase like axles and beams that are made of metals like aluminum/aluminium, they’re a lot stronger and can withstand higher RPMs for much longer
I'm no expert in lego, but from what I understand once you break the "only lego parts" rule and youre not bending any bricks, anything you do after that doesn't make it any worse in their eyes.
"the nature of LEGO bricks in holding themselves together while been propelled down a road at high speed and rattling around all over the place they don't really lend themselves to this kind of application" Challenge accepted! With some 'proper' LEGO design work I'm sure it would be possible ;)
Many years ago my friend wired up a couple of model rocket engines to the 3rd stage of the speed stroller on his Tamiya King Cab. On engagement of full power, the rockets ignited, propelling the car at massive speed before hitting a kerb and flipping.
I think its all about the steering if have enought power. Low the ratio or decrease speed of steering for smooth control if you only want a straight run
Apologies for using KM/H if you prefer MPH! The reason for doing so was to have more definition at these very slow speeds as my GPS doesn't show decimals. Here's a conversion to MPH of the final cars in each class (spoilers below)...
Pure Lego Car - 7mph
Rocket Car - 23.4mph
RC motor Car - 26mph
Thanks for watching! Will be back soon with another video (hopefully within the month) ☺
The 95% of world population prefers KM/H. Why would you need to apologize?
Hey man ..i love ur videos ...i just want to say 1 thing that jarrd my nerves about this ..U CHEATEDD ...I CANNOT CREATE YOUR OWN LEGO BRICKS ..U HAVE TO USE WHAT LEGGO HAS GIVEN YOU ....ANYBODY IN THE WORLD OF LEGGO KNOWS THIS ....I HEREBY CALL FOR A REDOO.
What you should apologise for is writing kp/h: kilometres per per hour? Come on man, you know better then that! :)
Don't apologize/ mph for a burger-per-sqare-bananas countries. Real humans use km/h.
@@conanobrien1 yeah, youtube channels that use only imperial without metric conversions (especially for natively metric measurements) should apologize
Perhaps you could partner up with someone who is more versed in building with technic lego. For starters i could see a use in suspension to offset the bumpy roads you use, and a wider track for higher stability. And there are much better wheels available in Lego. And perhaps a gym floor would be better suited as those are typically fairly large and exceptionally flat and smooth. A indoor location would also rule out weather conditions.
Can’t see a gym allowing rockets but for wheel drivin testing that’s a good idea
Maybe a collab with the Brick Technology channel or Half-asleep Chris?
I agree, I was internally screaming about how he was neglecting the suspension, just go kart-like fixed wheels.
I would help if help is needed...
Well, you definitely managed to make me laugh. Is it possible LEGO designed it’s motors for kids in such way that the parents don’t throw the whole kit in the bin after one time use?😂
I bet if he and Brick Technology teamed up they’d make something absolutely insane
seriusly
Building a rocket out of Lego
Brick technology definitely knows how to build every type of suspension for a RC car
Yeah
Nah. This guy would drag BT down.
I bet you could find a way to seal off the floor of the car and add a LEGO fan to make the car go even faster
Good idea!
Or an EDF fan to cheat
Like the McMurtry spuerling
It makes me remember a car from Gran Turismo 4
@@prateekpanwar646 chaparral 2j
Honestly would have liked to see a bit more restrictions/rules as it does seem like you could have just stuck a lego brick to your existing rc car at that point and called it a lego car by how some of the final ones were propelled. It seemed less about optimising the lego part and more about building the most basic chassis and sticking a rocket on it.
I agree
Agree, I think he gave up early. Like with the submarine.
Also with his fastest rc plane video, he just sticks a rocket on it. The fastest lego car should mean a car made only with lego
It won't be much faster with just legos, no matter what you do, they are plastic and will melt and or break.
@@Ziegeri That's the whole point. You have to test and figure out ways to push the limits. This video is like saying you're gonna tune your car for more performance and then just going to a dealer and trading it for a Lamborghini.
You can definitely optimize your lego builds to make the car a LOT more stable
The thing I like the most about your videos is you show all the fails and problems you have with the project
There wouldn't be much of a video without them haha, but yes I love showing what hands - on engineering is all about - trial and error!
All of your cars were pretty flimsy. If you don't mind adding quite a bit of weight, you can make them much stronger.
However, the surface you're running on will always be an issue unless you use suspension.
What your lego cars need is suspension. The Channel Brick technology has made a video where he compares different types of lego technic suspension designs. A differential would also help against wheel spin.
48 years ago, using the same rocket motors, Estes C6-5, my friend and I built a Lego rocket car. The car disassembled in rapid fashion on the first three attempts. However, we discovered using Large Lego wheels, 2" in diameter with a 1/4" wide tread, and lengthening the vehicle to about 2' long AND using a new invention called Krazy Glue. We had three successful runs. Using a stop watch and a blacktop basketball court to measure speed, Lego Landsmasher IV went an astounding 26mph.
The 3:30 variant reminds me of the "Dolmette" chainsaw driven motorcycle 😁
The last car just had no chassis at all, you basically just bolted two axles to a flimsy wooden board. Just with some simple chassis building, triangulation and so on you'd have a car that survives the stresses.
You certainly achieved the “Air” part of the project here @8:07. 😊
The one using LEGO parts entirely was the most impressive.
Tether car that goes around in circles tethered to a central post would be good to try also. There used to be a guy that brought a whole set up to Old Warden model days with some high speed petrol engined tether cars running on a circular portable road - they were quite exciting to watch.
I feel like with the speed of the rocket engine the centrifugal force might be too much but I still wanna see it lol
@@aydinlutmergp4885those cars go at 2-4rpm’s on what a 15 foot wide track?
there's 2 improvements you can do
first adding suspension to help the car to keep its wheels on the road (it will increase the weight, you'll need to take care about the suspension travel and lego shock absorbers aren't the best but it will absorb the roughness of the road and will improve the stability)
two : don't forget to put a caster angle on your steering to improve stability
the vehicle is very light so the stability is really important
Yoo congrats on 300k
Congrats on 300k 🎉
LETS GOO AN UPLOAD
bro just looking at this makes me cry 3:10 there is such a tiny fraction of current going to those motors. Also people have made genuine LEGO cars that go faster
1:54 "kp/h" is wrong. Either "km/h" or "kph", the "p" stands for "per" and thus makes the "/" redundant.
Kmh^-1
Kp/h if k means km is acceleration in kmh^-2
@@MODElAIRPLANE100
I think he meant speed and not acceleration.
imo kph is wrong and only km/h is right.
kph would be kilo per hour and missing unit of distance and it infuriates me that the m gets dropped
6 kilo per per hour!
The rest of the video uses km/h so I think it was a typo
Man,thats not LEGO,thats LET GO
Halfway through, it seems like the lack of suspension is your biggest problem.
Wow, I'm really surprised you didn't address that.
I can't help thinking that smooth pavement would make a world of difference.
I've built a lego space capsule that had an actual little minifig that I could mount on a model rocket. I could send you the instructions I made with the part list if you want another fun lego project.
Your creativity shines through in every video. Love it!
I dont blame you for thinking that lego does not hold up well because its plastic, but if you just look at a couple of images of lego technic, you can really get a feel of how strong lego technic can be. you just have to use it properly!
Your biggest enemy is the bad street...
There are some very talenten Lego RUclipsrs out there that can and have designed cars with superb suspension and frame strength. I feel like a collab is needed herr
To be honest James, there’s some more one could’ve done on this by simply making a box chasis out of bricks.
Hm maybe if you had a wider chassis and a bit of suspension it would help with the bumpiness of the road, and be able to have more control at higher speeds.
Where can I find the RC car motor?
IDN
He really went the trailmakers more engine more power lol
Idea: wider wheelbase! Also, maybe double the Lego struts. Maybe Lego 😁 Rocket car could go a lot faster if it had the servo steering (maybe with steering assist too?) And a Lego housing to hold the force of the rocket (vs hot glue).
Yeah so that much Lego motors should definitely go on different battery boxes and different ir recievers BC you were overloading them, and definitely if you want speed or power.
And you probably don't know but the different motors have different speeds and powers.
This is a really sweet video. I"m an adult fan of LEGO and must be very naive for I was hoping for faster speeds. I must say, you have incridible determination. I loved the model rocket engines on the cars. They really reminded me of the long, slender, rocket powered LSR-type of car. Thank you for this video and best wishes.
maybe suspension would help...
I still want that rocket power train
really cool video!!! i too love experimenting with all kinds of r.c. motors/parts of all kinds.
When I was about your age (guessing) a long time ago, I also made a rocket Lego car using the little Estes A motors, and went through much the same progression. 1st car, too short, tumbled immediately. 2nd car longer, took off ok until thrust overpowered it and it tumbled at about 15' range. 2nd car v2.0 - added vertical stabilizer from rocket kit. Success...until front end exploded from road vibrations. 2nd car v2.1 -- taped front end together: SUCCESS! Car traveled straight down road until ejection charge in motor went off.
As a kid we build lego technic cars and dragged them after a bike, to see what car could fastest before breaking.
Rubberband-suspention.
Wide car.
Vertical lego bars with pegs, to clamp it together.
Congrats on 300K 🎉🎉🎉🎉 congratulations 🍾🎉🎊🎈
Nice ideas, but you could 3D print some custom Lego parts to keep it more stable with the size C rocket - advice from a 13 year old btw 😅
10:47 Left Bearing Block has already cracked 😂
1 of the most important parts to go fast = to have a good and stable chassis to start with. the way you are connecting the lego parts is not strong/stable, and a smooth surface is a must. however this again was a entertaining video
Hi James, big fan of the channel. Here's an idea for something that seems to be right up your street in terms of techniques. Why not try making an RC plane which has an EDF/Prop for low speed flying and a rocket for high speed flying. I know you've got something like this in the past but the new twist I thought you could put on it would be to take inspiration of some military air craft (like the F111 and the F-14) which have a variable wing geometry design commonly called swing wing. This way you can have the wings out for low speed take off and landing and then sweep them back in flight for a really highspeed rocket assisted run.
Bud, Don't ever feel silly for doing things that give us epic content :) !
And now use the Lego Buggy motors
Making the car wider helps with stability as well
Half way through, still objects take a lot of force to get start moving so I would have gotten something to get it started going a speed of like 2 before setting the rocket off because a lot of issues seem to be the nose dragging the back and flipping the thing side ways rather then going with it, forward.
Cool it’s awesome to see the cool projects you make
Nice, this is exactly what I was looking for))
Cool idea)
Yessss I’ve been waiting for this
Wonderful work.
Congrats on 300k!!
Tip:: when attaching anything with an lcd screen onto one of my RC vehicles/creations, or using it "in the field" for this sort of experimenting, the moment i get the monitor/sensor, or whatever it is that has a shiny screen, is I first peel off transparent packing tape from a roll, cut to fit, and apply it to the shiny new screen. Sometimes i wont even cut to fit, because i know ill be replacing that packing tape "screen protector" sometime soon.
Thought this *may* be helpful... with future speed monitors or whatever else... that has a nice new shiny screen someone wants to protect
Great video but its a crime you hooked like 7 PF XL motors to the same battery box a stock lego battery box can only really power 2 PF XL motors at full power, also some suspension and Akerman steering geometry would have helped alot
When I was a kid, my brother and I used to build cars out of Legos to see if we could build one that would stay together when sent down all 11 stairs in our house. Everything was carpeted at the time so it was just a matter of them surviving going from one story down to the other.
Legos seem to have been different then as most of the blocks were thicker than that and we didn't have any of those longer ones with holes in the sides either so I would say that they were more robust. The common problem was that the wheels just clipped onto these little plastic clips on the side of blocks made for that so the wheels would usually fall off and sometimes they'd pick the entire brick off of the car with them, plus we entirely broke a few such bricks at the little attachment point that clipped into the hub of the wheel. There had to have been loads of friction too since it was just a plastic on plastic bearing. The other thing that happened was that bricks would fall off of the outsides of our cars or whole sections would if we tried to put any hollow space inside the car.
There were no Lego motors or any electronics whatsoever back then and this video is actually the first time I've ever heard of such a thing and now I want some! It was all push-powered stuff back then though. There were RC cars and we ruined several a Christmas/Chanukah present sending them down the stairs to see what happened, although I don't know why we didn't expect them to break even more efficiently than our Lego cars. This is obviously why we only sent a couple of them down the stairs before we realized that they'd all just immediately be destroyed. Seeing all the cool parts I could have harvested from them, I wish I still had them, although I doubt the parts really would have avoided oxidation after all these decades. All of the controllers were likely shittier back then too but I don't know since I've never owned one of these newer ones. The newest remote control thing I've ever owned was one of those cheap RC helicopters that you can fly indoors. I will say both that I suck at flying helicopters and that it was very funny to watch my cats chase and catch the helicopter.
Congrats on 300k bro! 🎉❤
"You have to have a car with four wheels that thouch the ground at all times"
C-Motor: "I pretend I didn't hear that!"
11:45 So much torque, the chassis twisted coming off the line😂
Been watching you since the beginning bro. I'm so surprised you haven't hit 1m subs like I LOVE watching you. I wish I could watch a video every day. Keep it up. Proud of you. You'll hit 1m in no time
Just a quick note, assuming 100% efficiency from the motors the absolute maximum horsepower you would get from 8 xl lego dc motors is about 0.043, not 0.1. Realistically your looking at 60% of that, so around 0.02 horsepower
Love the idea of this. Also, JIMNY!
Great video James! Where is the end card linking another one of your videos?
You need a "no custom lego" rule, otherwise you might as well machine all new parts out of metal🙂
You should build a rideable ekranoplan. It's sort of like the hovercraft, but it would still be pretty cool, and a rideable ekranoplan could be a transition to rideable planes.
Maybe front mount the rocket motor, firing rearward in the mouth of a car-length augmenter tube (passive venturi?)
Questionable stability gains perhaps, but . . . 'Bring on the noise!'. . . & maybe a servoed (flameproof) rudder! : )
You need to look into some actual lego building techniques to make the things you make stronger.
Instead of just placing beams directly on top of each other, if you place two single plates between them, the holes will line up at exactly the right distance so you can add vertical beams connected with pegs. This will make a much stronger structure.
Just an idea, try putting rings on the bottom side of the chassis. Then running some fishing string as a guide to keep everything a little more consistent. However it will create drag. Your videos are awesome 🤙🏼.
All 4 wheels must touch the ground...
... except for when it is crashing spectacularly!
😂
You coud do so much more. Make the chassis much more durable by adding interlocking vertical and diagonal stiffening bars, add a suspension to all 4 wheels to improve ride quality, and adding a few of theese 6X2 weight bricks filled with metal for trimm and balancing everything out.
Brick Technology is proud of you!
Maybe glue the lego together with UHU glue to stop it coming apart to start with thats the strength sorted ,next is work on its power
I LOVE UR VIDS so interesting to watch even when ur bored
For your next lego project, How about testing different existing Lego car kits with steering built in, modifying them top fit motors and servos and gradually upgrading the kind of motor you put in it and see where they start to fall apart? For example you could compare a relatively cheap kit like #42122, then go up in the price ranges, and see how they compare? Kit #42160 could come next, and then #42125 #42156 or #42096, and at the end you could have the most expensive cars, either the Lamborghini #42115 or Ferrari #42143.
I build some Lego RC Cars with BL Motor too. And i can beat the 50 km/h without bearings and with only 2S Lipo Batt(7,4V). I lubricate the moving parts whits Glycerine. This will work fine. If you want to drive on raff roads, you have to add a suspension on the car. This will make it a lot more stable if you have not a plane ground. A steering Gyro ist also very helpful at high speed. You can reach 70 an more Km/h with the BL Motor you use in the Vid. Im sure.
I feel like shock mounting the rocket motor on a linear compression spring would reduce issues, as it would act like a capacitor/inductor smoothing out the high jerk from the motor. Basically it would go faster/further if the motor was mounted on a spring... Maybe?
You have to add suspension to absorb the bumps of the road.
Pretty nice work, James! 😃
Looking forward to see what you make next!
Stay safe there with your family! 🖖😊
I think to solve the problem of turning at high speed, you can spread the wheels like the front wheels.
Oh really cool done, you can do so much with LEGO
It sure looks like you’re having fun!
Imagining someone finding half a Lego car with a rocket glued to it
You should look up the 3 different Lego PF Motors...You switched from a single M-motor right away to several XL-motors...XL-motors have the lowest speed, but highest torgue out of all PF Motors...
A flywheel approach with larger wheels should work. Your main problem is that the wheels are too small, causing the car to spin out of control at a certain speed. A flywheel could potentially be enough force to run the larger wheels at high speeds.
In order to achieve a proper Land Speed record you have to reach the speed twice in each direction of the track
Building the fastest “Lego” car…by trying to pair a Lego build with non-Lego propulsion? Might as well just take an unpowered Lego car and put in a carry-on bag on your next airplane trip, and claim it’s the fastest “Lego” car at 550mph!
the grey version of the pullback motors you used seems to be geared for 43mm tyres while the black version seems to be geared for 30 mm ones.
Did you try to power 8 XL motors with a single Lego battery pack? Voltage drop on that would've likely been insane and I wouldn't be surprised if it would've been faster with less motors connected to it.
A longer wheelbase would've helped I think. Great video mate!
There are Lego parts you can purchase like axles and beams that are made of metals like aluminum/aluminium, they’re a lot stronger and can withstand higher RPMs for much longer
Glue the Lego together & try again mate
im very versed in using the lego technic system, and would gladly help you improve upon these cars with suspension, more solid framework, etc
The fastest my LEGO cars will ever go is, how fast my 3-yo can throw them...
I'm no expert in lego, but from what I understand once you break the "only lego parts" rule and youre not bending any bricks, anything you do after that doesn't make it any worse in their eyes.
"the nature of LEGO bricks in holding themselves together while been propelled down a road at high speed and rattling around all over the place they don't really lend themselves to this kind of application"
Challenge accepted! With some 'proper' LEGO design work I'm sure it would be possible ;)
3:49 "Now to find a proper road with a smoother surface..." (Finds the smoothest road in England, still very rough and textured).
Many years ago my friend wired up a couple of model rocket engines to the 3rd stage of the speed stroller on his Tamiya King Cab. On engagement of full power, the rockets ignited, propelling the car at massive speed before hitting a kerb and flipping.
i like ur content a lot. I want to see u try making a perfect rocked lego car like the professional one
I think its all about the steering if have enought power. Low the ratio or decrease speed of steering for smooth control if you only want a straight run