Originally Posted by Briguy
Maybe there is a different problem if a new spur wobbles . Could be the top shaft isn`t true or even a bearing problem .
The tranny build on my DF-03 is actually brand new. I haven't even ran it yet. I've checked all the parts before installing them, and all of them are quite good. The stock spur (Tamiya 0.5 pitch) doesn't wobble.
I agree with RCabcs. The quality of injection molding versus machined spurs are quite different. Didn't Losi used to have machined spurs instead of molded ones?
Nowadays, I'm not sure if anyone out there makes machined spurs... Hard to compete on a shelf, $4 molded spur or $8 machined spur?
I've eyeballed my spur just now, and I do notice that it's not quite true... I look at it from the side, and instead of being a straight line, it's a little curvy. Oh well...