Re: Drill Transmissions Wobbling???
 

What do you mean by torque all of your drivetrain bolts?

Re: Drill Transmissions Wobbling???
 

We also found that our drills wobbled. Thinking it was the coupler, we had them remade by one of the parents who's a machinist. This did not cure the problem. We then took the coupler and left-handed screw off and we no longer experienced the wobble. We then tested the motors with just the left-handed screw and the wobble returned.

Could the screw have that sort of impact on the system? If so, what are the overall effects on the motors?

Thanks,
indieFan

Re: Drill Transmissions Wobbling???
 

I can't diagnose your particular problem but I can tell you what I saw last year. If you are using the hex coupler, it must be fully screwed on the output shaft of the drill tranny and it must have the locking screw (left handed screw) in place and tight. If not, when the drill rotates, the hex coupling moves in and out on the shaft, binding against the rest of the linkage and putting longitudinal stress on the drive train. As it pushes out it could look like wobble. If you are using the mounting hardware supplied in the kit, then you should insure that everything in the drive train is running true (i.e. all the shafts are in perfect alignment and none of the bearings are binding.) before you tighten the mounting hardware. Any offset or misalignment will cause binding in the drive train and can again look like wobble.