Quote:
Originally Posted by ZZII 527
The only thing I can think of (other than what you said about backdriving the BB with the FP) is something that happened to our 42mm gearbox: The four long screws that hold it together came loose little by little until eventually the entire housing would twist under the torque from the motor. This would not occur if you are using the holes on the sides of both bearing plates to mount the motor, but we are only using the front face of one bearing plate. Luckily, we spotted this before it became a problem, but I imagine it would really mess with the alignment of the gears and could cause them to bind. The simple solution is to Loctite them and tighten a lot.
Glad to hear that your carriers are holding up, though. Team that are using the 42mm with FP as speed sources with a lot of extra reduction should be okay.
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I can't believe I forgot that.
We noticed the gearbox (from front to back) twisted about 15 degrees when we tried to move the arm. That makes sense.
We are face mounting as well, but I think I have a simple solution; We will make a plate out of 1/4" (maybe a little thick, but we have the weight) that just bolts to the bottom holes and helps prevent that twist in case the bolts do loosen again.
Thanks