O.S. Motor OMA-5010-810 Preview
By Ken Myers
Email: kmyersefo@theampeer.org
December 2012
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.

This is the direct link to the article in the Feb. '13 Ampeer.