By Ken Myers
Revised Dec. 8, 2012
Revised again, Jan. 17, 2013
Updated Aug. 20, 2013
Shaft Replacement Warning!
O.S. Motor OMA-50xx-xxx shaft replacement
The "50" series O.S. Motor brushless motors have a REVERSE thread 4x10mm socket head cap screw that secures the shaft.
I found out the hard way by snapping mine off when changing the shaft.
This is just a heads up so that it doesn't happen to other folks.
The inside of the motor is beautifully engineered and well produced. I really like my OMA-5010-810, but just wish that I'd known about the reverse thread on the socket head cap screw.
This article was revised and placed in the February 2013 Ampeer.