Vehicle Physics

[Chris Paulson]

Hi,

 

I thought I'd have a little play with doing a vehicle based on the monster truck lua stuff. The suspension appears to behave like a March hare on a pogo stick after dropping a few disco biscuits.

 

Any idea what good addtire and mass settings are? I tried lots and lots of settings but couldn't improve the situation.

 

Everyone else seems to use: -

 

local springconstant=25.0

local springdamper=115.0

mass = 1.0

 

but this doesn't give the quality I'd expect.

[Flexman]

mass looks a little light. Been a while since I played with the vehicle physics, I wrote a little program to adjust those settings as you drive and typically good results for a vehicle with mass set to 11, was the damper at one half the constant...or the other way around.

 

I should really check. The mass and springs work against gravity which by default is set to 20.0 and not 9.8. So try upping the mass of the vehicle.

 

Actually I have a physics question myself, I'll post that in another thread.

[Chris Paulson]

Yes 1 is light I did try other settings but I found it difficult to get any kind on decent balance.

 

I kind of thought 1 meant 1 kg so that's really light. I did try 800 (still really light) and up the other values but that didn't help either.