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Unread 30-01-2006, 13:03
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Joe Johnson Joe Johnson is offline
Engineer at Medrobotics
AKA: Dr. Joe
FRC #0088 (TJ2)
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Join Date: May 2001
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Re: Low Cost Planetary Gearbox Source...

Quote:
Originally Posted by petek
Ditto for Justin's post, plus a warning: I'd say the outfit in China which makes these puppies has the same material quality control we've all come to expect for inexpensive hardware coming from that part of the world. Even taking great care, I managed to strip the threads when tightening two of the screws holding the gearboxes together. If we use it, we'll be putting heli-coils in.
I was unhappy with the use of phillips head screws rather than torx or socket cap screws. I don't have the screws in hand right now. Does anyone know the thread definition? Based on my memory, I think it was an M4 or perhaps it is a 10-32 (based on the fact that the rest of the metal mounting points are that thread).

If you know, please share.

I think if I were using these gearboxes, I would replace the phillips head screws with a hex socket head cap screw (though I don't know if I would go so far as to install helicoils on any threads as a preemptive measure).

Joe J.
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