I acctually think we have the exact same setup.... MMM, 4S Polyquest, and the same motor...... the chassies is the only thing that is different and not the exact same gearing i have 14/48...... im hoping that there is a bad solder or something like that...

i think i found atleast one problem..... the front bearing on the motor shaft was not ok:
http://archive11.pixbox.se/arkivet/s...23122755.jpg?0

I put a new bearing on there so now there will be some new testing soon.....

ogrfre01, could you explain how you got the rear endbell off? I understand you remove the screws and tap on the front shaft to knock the rear endbell loose. Also, is the rear bearing flanged?

Thanks