Sorry, this is the working link:
http://www.chiefdelphi.com/forums/at...9&d=1201127844
So, this a cubic function. It sort of is like an exponential growth, but even in the negative region. What it's doing is taking the cube and then dividing by the square of neutral. It results in this: When the joystick is at half forward, the speed is cut in four. However, at full forward, it produces the full speed. With normal division, your max speed is cut. This eliminates the issue.