Originally Posted by
Pinebox
I've been running a mach3 for a while. But, I think I'm way off on the timing and gearing.
45* timing and 34/69 gearing with a fan. It has no bottom end punch, but a fast top end.
I ran the same setup with a mach2 and it was great.
I'm going back to 20* and 32/69 or 31/72 and starting over with the setup.
I would try a smaller pinion gear like a 30 because from what I understand the higher the pinion the more top end speed and higher motor temp usuallyso go down a few teeth on the pinion and get some of that low end power back.
However I have a hard time understanding which spur fear to pick like the 69 or 72.. I know that spur gear make much less of a different compared to pinion gears so if someone could explain that to me that would be greatly appreciated because I'm in the same boat on picking gearing going from a 8.5 to 17.5 class and I know in a stock class gearing is a huge park of it