Vasilis and I have been working on making a 125cc Shifter Kart for AC. The mesh is very early in it's stages, but I've been working on the physics the last few days for it. The suspension is solid, since in real life these don't even have suspensions. So all of the tuning has been put into the tires. That's where I need the most insight... Does any body have experience with these sort of karts in the real world? I'd love to ask some questions, and even have some people try the vehicle out. I've been able to get the proper dimensions and drivetrain items in place, but the tire physics have been sending me in circles.
http://www.mediafire.com/download/r5pmyg8cxwp92b4/kart_V0.00000005.zip
fonte AC forum