Yes, but why? The ones that come on the motor are pretty decent, I don't see how someone without good machining skills and a good mill and lathe can make something comparable. (You would need to hold good tolerances on the shafts, good surface finishes, and the flange on the other end ain't no picnic. On top of that, you have to get through the clutch housing, which I don't think anyone on here had been able to do.

The clutch mechanism that causes the clutch to slip out isn't in the shaft. If you look at the last planetary gear ring, it's not firmly attached to anything. There is a wave pattern running along the top, and what happens is some form of spring loaded pins press into the dimples. When the torque exceeds a certain amount, the pins / ball bearings / etc shifts and the planetary ring rotates (thus the tak-tak-tak-tak-tak sound)

-=- Terence

well we want to get a very high gear ratio from the motor for our transmission gearbox, well thanks for the advice, we'll try to think of something ;)

The new transmission looks pretty solid minus the shifter. It looks like the clutch could be locked by putting a few welds on the rings that Terence mentioned. The only part I'd worry about is the shifter. It is the only plastic in the transmission. Also if you look carefully there are some teeth inside the black casing.

-Ryan