Motorbike sample

[indy2005]

Hi,

It would be great if there was a motorbike sample. I am getting some
odd behaviour trying to create something like a MotorCross bike. I am
keeping it simple with a box for the body and rectangles for front and
rear axels, but the simulation is very odd....I am sure I have done
something wrong, but am just using pins, circles and rectangles.

http://www.alibaba.com/product-free/105358588/Yamaha_YZ85_2009_Motocross/showimage.html

Front suspension relatively straight forward (I am using a beam to
connect two rectangular cylinders which I will replace in Cocos2D
with a prismatic joint spring).

Rear wheel not sure about - dont want to use a spring as I need to
reproduce in Cocos2D, but if you look at the image attached, rear
suspension seems a different mechanism.

Regards

i