Thread: Small Banebots Motor Issue - Lessened torque and smoke
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Unread 12-02-2007, 09:15
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Re: Small Banebots Motor Issue - Lessened torque and smoke
Quote:
Originally Posted by Justin M. View Post
Stall current is 42A, spec'd stall torque is 158 in-lbs, but the safe operating range is 100 in-lbs max. So yes, if you were running these on 20A breakers they should be tripping before these motors stall.

snip
This is not true. The 20A Breakers are time dependent. 20A is their NOMINAL value. They should be able to carry that load for infinite time. They will trip at a value above this -- tripping faster the higher the current is above tghe 20A rating.

The Banebots motor can pretty easily over heat. And you don't even have to stall them.

For these motors (and the FP too for that matter), I strongly recommend that you design the worst case loading to be something like 20-25% of the stall torque.

Joe J.
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