Archive: 5 posts

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Ive been looking everywhere for help on making a torsion suspension system for my tank, with really no luck. Ive tried it myself and the LBP 2 physics system is not my friend. Can someone give me a hand?

2011-07-08 02:01:00 Author: Unknown User

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Hard one. In LBP 1 I had basic suspension on a car, but I'd say for yours it'd be like heaps of stiff springs that can only just support the weight of the tank. So if you go over rough terrain they would compress and extend. But I guess the next problem is only moving on a single axis. Maybe a mover set to only allow up and down movement. But probably not. MAYBE some holo in sort of a comb pattern that sits eitherside of the wheel/spring and put tags on it and on the wheel a follower set to flee tag with a tiny radius? Probably make it jitter around. Maybe I'm getting too complicated also. I think it could be done but not with normal physics. Pistons and rods may work... I guess I'm rambeling now, but maybe there is part of an idea there for you?

2011-07-08 02:51:00 Author: Mr_Fusion Posts: 1799

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I'm thinking you could use a set of three springs, one loose, one medium, and one tight. The three should work together enough to hold the tank in place without bouncing. Better yet, two springs and a rod may work nicely too. The physics system IS weird, and sometimes it takes more than one tool to get it right. If none of the LBP1 tools work, you could try followers set to follow tags at 100% acceleration, and a minimum follow distance.

2011-07-08 09:55:00 Author: sp0ngyraver Posts: 407

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Hard one. In LBP 1 I had basic suspension on a car, but I'd say for yours it'd be like heaps of stiff springs that can only just support the weight of the tank. So if you go over rough terrain they would compress and extend. But I guess the next problem is only moving on a single axis. Maybe a mover set to only allow up and down movement. But probably not. Wheels attached via levers to torison bars typically don't travel along a single axis like spring suspension in cars. For that you'd need two torision bars with an arm assembly between them that only allows the wheel to move up and down.

2011-07-08 11:40:00 Author: Ayneh Posts: 2454

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use torsion bars, but instead of using springs (or spring bolts) use wobble bolts set to the "direction setting" attached to a battery so they always try to extend. then set the time to around 0.5 (NEVER set it to 0.1) and adjust the strength until it supports the tank. if you set it to 100% strength and it still cant support the tank, change the material of the torsion arms to a more dense one (ie from cardboard to wood, or wood to metal {metal usually works best} ). if it STILL cant support the tank add mass to the torsion bars (ie make them BIGGER) since the mass of an object has a direct correlation to is strength attached bolts/springs etc... if it still cant support the tank then you have to make it lighter (or overlap wobble bolts by copying the torsion bars over themselves, but this is tricky). hope this helps!! also, this is a fairly basic design though if tuned well yields good results. obviously there are more advanced ways of doing this using multiple wobble/spring bolts overlapping attached to magnet sensors etc... but they are MUCH MUCH harder tune (or to make it work at all) anyways best of luck!

2011-09-26 05:27:00 Author: horwitzer Posts: 255

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