This Simple Walker Was The Hardest To Actually Make
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- Опубликовано: 18 мар 2022
- Welcome to another episode of Scrap Mechanic! Today I am attempting to recreate something known as a Passive Dynamic Walker. It is a contraption that is able to walk with power other than the force of gravity acting on it. Give it a gentle slope and it will walk one foot in front of the other all by itself. Mechanically it seems very simple, but as I find out, replicating it is not as easy as it seems.
Video Referenced:
• Passive Dynamic Walking
More Recreating Real Machines: • I Evolved This FAILED ...
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Scrap Mechanic is a multiplayer sandbox game with imagination and ingenuity at its core. Create fantastic machines, transforming vehicles or sneaky traps. The possibilities are endless with Scrap Mechanics powerful tools.
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Игры
If you were to try this again, you'd need a counter weight at the top of the knees.
The reason it's not taking the correct steps is because it's main weight is in the feet. If you extend the lower leg through the knee and add extra weight at the top, it will cause the knees to bend on every step.
I'm actually super interested in seeing this work and might need to make a video on it just test the concept 😅
Ok your probaly right
Oh in i forgot in scrap mechanic or in trailmakers
?
@@Hiro_blee3292 it was probably trailmakers
^ This ^
Plus he should change it so one set of legs has feet pointing forward and the other has feet pointing backwards, that way it will slightly lift up each step, wich hopefully means it wont get stuck on the ground mid-step like is happening 95% of the time with the designs in the video.
10:35 since the concrete blocks at the top are forward of the point of rotation, obviously the outer legs dont want to rotate forward, they actually want to rotate backwards. If you look at it from the left side, the concrete weight at the top is the furthest forward. Then comes the point of rotation, the hipjoint you might say, which is supported underneath from the inner legs. This means that the concrete at the top is actually excerting a rotational force counterclockwise, or in other words forcing the outer legs backwards.
Try to connect both outer legs so they're in sync. From the looks of it, due to the independent outer legs, the walker tends to move one outer leg only
how tho
@@calspacer6685 put a tube in the back that is stick to the two outer legs but skips the two inner ones with enough room to still move backwards the two inner ones. Then put some weight on the front o compensate
@@rlebron2249 or use collision glitches
@@rlebron2249 or just make it go up and above the whole machine
@@rlebron2249 putting weight on the front does compensate for the horizontal weight balance, but completely throws off the vertical balance
Scrapman, you are still KILLING IT with this series! Not only are these fun and entertaining, but SO IMPRESSIVE too! I literally got goosebumps during your last attempt here, I start every day by watching your latest video, keep up the tremendous work!!! I can't imagine how long this video must have taken, but I really appreciate the effort 🎉🎉🎉
Day 20: still trying for ScrapMan to please build - M400 Moller skycar aircraft or just a quick build video of all the ideas
I just looked it up and yes
So much yes
Yes pls
ye MAN
I request what this man just said
Yes
You need equilibrium between the feet and the top, because the top has to go backwards and lift the feet forwards in a knee bending motion.
im getting the feeling whenever i see it move, i remember how happy i was when my niece first walked by himself XD
Scrapman, I got an idea. Make a beyblade and surround it with magnets facing outwards and use thrusters to rotate it. Use a swivel to cancel out the beys rotation and place another swivel on top of it and place some thrusters to use for changing directions (in instruments of destruction)
Good idea
That's new
Magnets dont exist in scrap mechanic so no
@@PestiPanda he said in instruments of destruction lol
@@nikkiofthevalley no he didn’t
It's forward motion is entirely dependent on linear momentum, the two separate sets of legs act as a pendulum and create the perpetual motion necessary for it to "walk". You'll need to experiment with weight distribution and friction on the feet.
Idk if u noticed but the 2 middle legs Are a little bit shorter than the outside legs
I'd say make the outer legs a tad bit shorter than the middle legs and use a bit of @Code_Creature 's knee counter weight method. so the inner legs when they bend will give it just enough lift to move between and when they settle will give a bit of a lift for the outer legs to swing out to miss colliding with the ground? Or make the feet on inner legs a little thicker?
this is true this fact was killing me
I really loved this video. It makes me happy that you didn't just give up at scrap mechanic's physics. Great job Scrapman!
I love how you show us some background info on what you’re about to make with some videos and images. It’s very interesting and I like it!
When complex mechanism walkers are easier to build than one that relies on Gravity:
Going back and looking at the original footage Scrap, I think the plates you've taken to be just to stop the knee over-extending actually play a role in the stepping motion as a counterweight to the lower leg. That could explain why your big knees walker around 16:00 is working a bit better
Thank you scrap man as always you lighten the mood in my mind😊😊
I had a go at building one of these things myself after watching, and doing some research on them shows they are notoriously difficult to get working. These biped/tripod types even moreso. The common approach to them is to provide them raised spots for the feet to land, because the swinging legs tend to ground out as they are all the same length. I found one that used a cam of sorts to lift the leg that is swinging forward clear of the ground, but I really dont know how you'd do that in either game, if its even possible.
So your couple of steps Scrap were very impressive! As a note, the videos I found where their bots could take a half dozen steps if they worked at all, were from engineering collage and university students that had weeks to work on them with reliable real-world physics. The slopes they used were mostly between 2% and 4% gradient, but one of these bots seemed to be able to handle flat interior floors somehow. It was far more complex though, full of weights and springs so likely some sort of conservation of momentum mechanics involved.
As a side, I found a sort of workaround for the clipping issue you had with the initial knees. The weight blocks dont seem to have that issue.
This was an insane build! You're complex builds are so cool!
More comparison on builds between these games is a cool idea. Enjoyed this!!
This was a fun one to watch, exciting to see it finally walk!
Imagine not watching this guy 😂
If you're gonna do this again, make it so that the outer legs are shorter than the inner ones. Normally the steepness of the ramp achieved the same effect, but doing that is much better as it will make the outer legs fall later and not make it collapse. Also join the outer legs.
It has been 2 years since I have watched you and your videos and intro are still amazing keep going man you are the best
I like how he ignored that the legs in the middle weren't supposed to bend. Makes the vid even better
I Imagine this is how Scrapman will teach his kids how to walk
You should make a walker in instruments of distruction.. but make it deadly somehow!
This is like watching a dad seeing his child's first steps... so wholesome
"Every step past the two first steps is just a mind-blowing experience"
Scrapman is like the parent seing his child starting to learn how to walk haha
Great video as always keep it up !
According to my intense calculations using addition and subtraction, I have figured out that ScrapMan is approximately 32.
Lol this is like how scrapman becoming a parent to a walker
really like that you tried it in both these games ;)
Hey scrapman! One thing I noticed with the scrap mechanic design was that the walker was starting with the angle of the slope instead of being perfectly upright. I think that might have accounted for something, since it would gain more momentum once you release it.
so many suggestions, i will just admit u picked a lovely escapade for physics games
Even though it was only kinda successful, those few steps were weirdly satisfying to watch 😂 great work 🤘🏼
Thanks 😅
We have witnessed one of the first crossover video between Scrap Mechanic and Trailmakers
Yo, his scrap mechanic self and his trailmakers self finally did a crossover!
ScrapMan really looks like a dad watching his child try to make the first steps in this one.
Hey scrapman I just wanna say that u should do the waterman’s arrowbile it was the very first flying car I personally think it’s pretty cool
gravity walker: *takes 2 steps and falls*
scrapman: *IT WALKS*
Day 309 of asking scrapman to make a plane dogfight evolution video (trailmakers)
Oh hi
@@franciskurian9392 omggg its you. Youre backk
This is one of the first times I have seen him go to a different game because he couldn't get something to work in the first game
Doing stuff like this would be good for a live because you can take suggestions from the chat
Yes this 👍☝️
It feels like scrapman watching his baby trying to walk
Your later scrap mechanic versions would have most likely worked had you used a less steep incline.
The reason they didn't work was that the knees wouldn't bend, and that was because by the time the center legs hit the ground, the center of mass was ahead of them.
But, if the incline was less steep, the center legs would hit the ground earlier, so the center of mass would be behind them causing the knees to bend.
This could also be solved by adding a weight to the top that is behind the connecting bar, or lowering the knees in the center legs.
With the amount of tips in the comment section, we NEED a part 2! I believe in the 4-leg-robot-child!
I would have worked in scrap mechanic but with how little parts you have to deal with and the various types of slopes helped you get to a working concept in trail makers a lot easier
Wow, you got way further with that than I expected. I think shortening the outer legs by 1 block might make it better, cause it's the outer legs that always seem to get hung up on terrain and can't swing by the inner set.
I wonder about recreating some of these mechanical builds in Main Assembly.
Wow I'm here early but love what up do scrapman I've seen all you vids at least 2 or 3 times each re watched every series multiple times
would love if this guy made a second channel were he uploads other content he plays in his free time (if he even does), as long as its not too much work
Suspension kneecap is something I never thought I'd hear
Isn't the second example exactly the way of how TARS from Interstellar works?
Yea... That was the same thing that popped in my mind!!!!!
Lol I looked him up and he looks like a monolith
@@outzymes3636 TARS is basically 4 monoliths that spin in symphony to move.
@@squoshi307 yeah, I somehow find that adorable. any robot without eyes or a visible camera i find adorable. like a sentient computer screen or something
Great video as always. I recently found out about a helicopter with no engines. It flies using jets on the tips of its propellers and lands using autorotation. It's called xh-26 jet jeep.
YET AGAIN Trailmakers proves itself being SUPERIOR building game!
2 games in one video. What a combo
I think in scrap mechanic you may need to add weight to the outer legs. potentially add another "kneecap" to the top of the inner legs as well. ideally you want the inner legs to plant and not move forward anymore. you then want the outer legs to move forward fast enough to plant themselves and swing the inner legs again. also something to note: in the IRL design, the kneecaps are a bit less than half the length of the "thigh" of each leg. So medium weight on inner legs, heavy weight on the outer legs, longer kneecaps, kneecaps are lighter weight than bottom of legs.
16:14
Scrap man: turns out walking is hard…
Creation: new record.
I don't know if this will help but I think a key part of understanding how these walkers work is it seems that the top bar the very most top never stops moving forward when the legs step in front of it it has to have enough momentum to carry it up and over the arch if it doesn't have enough momentum it will stop before reaching the peak so I think a key part would be to make sure that that top bar is constantly moving forward it might slow down it might speed up but it just needs to be moving at all times
You should make a walker that walks like a camel, camels walk in a very unique way unlike most other quadrupeds
Did you notice that the High Seas map has islands that have the same colours as You(Scrapman), Kan, Kosmonaut, and Moonbo (or Durf)
I believe the purpose of the knee caps is not only to stop over-rotation of the legs, but also as a counterweight allowing the legs to bend in the first place.
The ultimate final boss: The Gravity Walker
That’s pretty cool
What an exciting video! Maybe if the longer legs were connected in the back it would trip less
ScrapMan, you should make the turtle submarine for your next video.
Man wish I had these games. I think at first make sure the bends are even at the top and bottom of the legs. Then if you look at the 98 video the way they made the knees and with them having an extension to clap the leg when the other ones move forward. And they only travel so far forward. So if you can stop the legs from going to far forward it might help. I'd say just go back and continue to look at the 98 video and see what's missing. And id try to still try to make it walk flat instead of going down hill. But that's the hard part too.
this is sick
Very cool👍
Another reason to start it, is to put a controller and a cardboard pillar sticking out the back of the walker with a controller, a timer, a mountable spud gun and a switch...The switch will activate the timer, activating the spud gun, which shoots the cardboard AFTER the controller has set the angles the the bearings that they need to start, so basically u are just setting the walking position(controller), then getting rid of that connection by shooting it(spud-gun which is activated after the timer activates after an amount of time).
Try to build the XF5U -- a disc-shaped plane that looked like a UFO (and in fact got reported as such during test flights), nicknamed "the flying flapjack."
just like first time see your kid make 1 small step make u really happy.
Here are some fun ones i wish scrapman would make:
Cornu's helicopter
fritz von opel's first jet
Pou-de-ciel
fabre's hydroplane
Spirit of america (craig breedlove)
sometime in a future episode you should build a lun-class ekroplan
luv ur vids
people pls like so scrapman sees this
yo @ScrapMan you had a fatal error in scrap mechanic. the inner legs were a few blocks (maybe 3 or 4) shorter than the outer legs. so when the outer legs hit the ground, the weight on the top causes the whole mechanism to tilt forward. when this happens you can observe in 9:36 that the outer legs try to bend but hit the ground before they reach the proper position to start the cycle again
This was a delightful experiment, thanks for exploring my suggestion! Also, these aren't much easier to build IRL
My grandpa has a straight leg and a cane, and funny enough he walks just like the thing in the video. His working leg and cane are the outside ones and his straight leg is the inside one, so maybe take the joint away from the middle legs!
I'm no expert on this sorta stuff but with your most successful model I noticed what might be causing it to not keep going, the outer legs appear to be taking steps that are too large for the inner legs to keep up with which is why it's always the inner legs getting caught on the ground, perhaps try limiting the size of the steps in some way, perhaps similar to your solution with the knees, if you decide to try this tip out I'd love to see it in action
Hey, Scrapman, can you build the Vespa 150 TAP?? It’s an anti tank Scooter (yes like a moped) that had a tank cannon on the side and had a bunch of ammunition. It was made by the French Army paratroopers during World War 2
Idea: Add weight to the back of the frame to hopefully balance it out slightly and take a few more steps
I think the problem is that the inner legs are rotating too much.... Try making a stopper for it and that might work... btw cool concept 😃👍👍
i loving your videos
The weight (in Scrap Mechanic version) shouldn't be on the top of this walker, but on the upper rod connecting inner legs, because it was pulling pivot forward instead letting it reverse! Look at the top part going forwards and back in the Trailmakers and the real version.
Put the weight one part lover.
You should take a look at the Rotodyne. Its part passenger plane part helicopter hybrid and has a pretty unique way of powering its main rotor. :)
Now I wanna build one. 🙂
Also 16:33 "We're Ge''ing it" ScrapMan has become BritishMan
I have a feeling one of the reasons it wasn't working was because the slope was varying, it wasn't a contestant slope and the Walter is designed with one continuous slope in mind
Can’t believe you got as far as you did. Great job. I’m wondering if either the inside or outside legs are slightly longer or heavier
Yeah, they probably could've made it consistent, but they missed some key points in the video. For one, the outer legs should be slightly shorter than the inner ones. Another issue is they put a counterweight at the top front of the walker, which actually causes the legs to bend in the opposite direction they should, causing them to be straight. They should add counterweights to the knees instead. They also forgot to bind the outer legs together like they were in the video, which would prevent any failures due to one leg moving while the other doesn't.
Time to recreate complex creations in main assembly or besiege :)
hey scrap man I know you've almost 100% seen Wintergatens marble machine but I think you should give it a try after the new scrapmechanic challenge update comes out with the new balls. It would probably be a longer series but I think you'd enjoy it!
7:09
huh!
-ScrapMan
interesting how he switched up games, and i kinda like it
14:29 Lmao that was like an audio file played twice in a row
It would be cool to see concept vehicles from games and not just real life concepts.
its pretty intresting that he switched games in the middle of the video
The issue you had with it falling frontwards is because the weight at the top needs to counter balance the decline on the slope to have the top part as “upright” or “level” as possible
with the first and second one i was yelling at the top of my lungs to shorten the outside legs
So scrapman, something you didn't notice is that the outer legs are slightly shorter than the inner legs to prevent dragging on the ground
That would cause the inner legs to drag. They all have to be the same length. It's the knee bending that is meant to prevent drag
@@scrapman Yknow... I only thought about that after I posted, and figured you'd never see what I said anyways 🙃
you should have set it down the catwalk ramps they are much smother and more consistant
His internet speed go zoooooom
This was cool! What if you add a central pendulum, or two on the sides, so that inertia keeps it swinging out of sync with the legs? That could possibly maintain the forward movement. Not to mention that a central pendulum would look a bit... anatomically correct. 😄😆
There is a mechanism in the original video that slightly lifts the legs so they don't drag on the ground. this may make this build work better.