I made a modification to the FP transmissions. I removed the first gear and moved the motor so that in effect makes for a 3x speed and 1/3 torque. I THINK. If my numbers were right.
I documented what I did on You tube if anyone is interested. It's a boring three part video so if you just want the numbers it's on the third part .
http://www.youtube.com/watch?v=rbIe68UzETk
Performance turned out to be great!
I also milled octagonal aluminum inserts with the hose clamps and a slotted 1/2 inch axle so I could use 1/8 inch key stock to make everything work together.
Steve