Saturday, January 22, 2005


Servo Internal Stop
Keith Rowell Design

I was noticing alot of motor overheating while testing and opened a couple to have a look. I can't be sure, but my theory is that misaligned servo stops were restricting full motion and causing a stall current condition.

The stops get misaligned by turning the servo horn by hand. The gearbox has a huge ratio with 5 stages, and turning the gearset from the horn causes the geartrain to jump teeth and then the factory settings are out of alignment. Upon opening some motors, I found that there were even a couple broken teeth.

I think I recall being told not to turn these by hand. But I obviously didn't listen as you won't. I'm looking now for the "I told you so!"

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