Testing LEGO Tank Suspension...

Testing LEGO® tank suspension is so awesome! Several LEGO® suspension types have been modeled, including torsion bar! This LEGO® machine includes LEGO® Technic and LEGO® Mindstorms, allowing each LEGO® suspension to be thoroughly and consistently tested. I think you'll love this LEGO® MOC for testing tank suspension!

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Special thanks to @pybricks !

#legotechnic
#lego
#legomoc
#asmr
#legoasmr
#engineering
#experiment
#brickmachines
#machine

[klliak]

The test would be more accurate if you've used sprockets with no teeth in the suspension. In this case, the teeth were caught in the treads, causing way too much vibration and sometimes even the kickback

[manijoly]

Very impressive how well you managed to reproduce the jarringly uncomfortable ride the Christie suspension was known for.

[Mariano.Bernacki]

Now put a laser pointer in the cannon and compare each suspension's effect on accuracy.

[zarrten]

As a bit of a tank enthusiast, I’m very impressed with how well these suspension types were implemented and demonstrated, but I do have a few suggestions that are also echoed by other commenters.

Firstly, having the drive at the front of the tank causes slack in the section before the roadwheels, potentially causing problems and instabilities. Changing the drive to the rear of the tank would help with this. This was a historical problem encountered in WWII, specifically both the Americans with the Sherman and its predecessors as well as the Germans with their Panzer III, IV, Panthers, and Tigers (I and II), so it is an easy error to make.

Speaking of German tanks, interleaved suspension would be interesting to explore, and comparing how it stands up to normal suspension.

Secondly, as @k0lliak553 said, the roadwheels and the idler wheel (or tensioner wheel) should be straddling the center ridge on the tracks, like the return rollers are, rather than meshing with the tracks. This also causes a lot of instability in the tracks, and it should improve the performance over terrain

Thirdly, a lower center of gravity would be helpful in lowering the amount of motion the suspension would undergo from the momentum of the turret, improving the ride of the suspension.

Another point would be to increase the amount of roadwheels by making smaller versions of the suspension types or a longer tank, comparing a setup like the British Churchill with a ton of small roadwheels to something like the Soviet T-34 with fewer roadwheels.

Either way, it is still interesting comparing each type of suspension, from HVSS to VVSS/Christie suspension, and modern torsion bar suspension, and I’m sorry if I come off as a bit pretentious or annoying, I just like tanks and it’s 3am so I’m tired lol.

I just think that it could be taken to an even more interesting and in depth exploration with a bit of research and comparing historical concepts, as there is plenty of information surrounding WWII tanks, and it can show the sheer speed of advancement that happened over that 5 year period and beyond.

Alright now my yap sesh is over, and imma go sleep lol.

[OmegaReaver]

"Keeps track tension"
The Chieftain liked that.

[Random_Guy]

Plot twist, these videos aren't edited, this guys just a lego wizard

[haidenthomas]

One inconsistency i would like to point out is the different sized sprockets used, as larger wheels will always provide a smoother ride regardless of suspension. When i built my flamethrower tank (butane canisters) i played with a few suspension types. The best one i used was a hybrid of torsion bars and the horizontal but with considerable sag when the machines weight was exerted on them. Tortion bars provided the spring and every set of 2 wheels could also 'rock' in opposing directions. The softer force made the whole ride smoother and less bouncy. Plus when the weight lifted off a wheel it had room to move down with the track but still provided some support while the rest of the weight is being soaked up by the neighbouring wheels. I also learned that a higher amount of small wheels is better than fewer large wheels. That way changes in terrain have less effect on the whole suspension as a collective because it is spread out. The best way to imagine it is if a wheel were to break off, which system would shrug it off like nothing happened.
Sorry if im going on a bit of a tangent here. Track suspension has fascinated me since i was a kid :)

[messor-was-not-available]

Next video is going to be how you made a shooting mechanism insinde that tank? I'd appreciate that lol 😅

[Nepthrys]

Love the ASMR, please include more attaching lego clicky sounds!

[PiotrMys]

Wow... the part at 12:35 is insane. So so so smooth with the editing and filming. AMAZING JOB

[drakkon_sol]

Okay, I have been watching these for over a year, and they have become a lot more entertaining with your personal flair sprinkled in.
Sure the technical aspect is wonderful, but this video comes across more polished somehow.

Sweet tank!

[jdbrickcreation]

Wow, I really like the originals ways of using suspensions on a tank 👏

[valthatiserie]

With the Christie suspension, using stronger springs as well as toothless wheels would help smoothen a lot. Some extra mass may help too, specifically towards the bottom of the tank in order to keep better balance

[furaxerer]

This is insane how much fun an engineer can make of a simple test with no interpreting of the results.

[JulianBen-oe]

A suit of armor provides excellent sun protection on hot days.

[razorbladeflamingo]

As someone who likes tanks I'm glad you made this video, really helps with understanding the different types of suspension. (I also like LEGO's and what you make is really cool)

[ivy]

The testing machine is not a good way to test suspensions when turning, because they aren't actually putting any sideways resistance on the tracks. You have to drive them on a solid surface for that so that you actually 'pull' the track sideways to test the suspension.

[MickSpener]

Flow with whatever is happening and let your mind be free. Stay centred by accepting whatever you are doing. This is the ultimate.

[ardermirly]

Hard to say. LEGO-Army needs more tests, son.

[jmsyoxj]

One kind of glaring issue with all of these mock suspension test videos is the fact that the suspension is almost always way too stiff for the actual vehicle weight. Your suspension is supposed to be partially compressed when sitting at standstill but all of the suspensions in this video are completely uncompressed until an obstacle is encountered, in which the vehicle needs to be significantly lifted by the obstacle before the road wheels suspension begins to work. Loading the vehicle with weights such that the suspension is ~10-15% compressed when just sitting still would have a massive effect on how smooth it is to ride over obstacles.