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Old 09-19-2014, 05:20 AM
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Location: Wisconsin, USA
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Originally Posted by Wildflyer View Post
For outrunners, I have checked no load rpm, by using 2 strips of white tape, or narrow cut off strips of postit notes, stuck to the outside housing of the motor. It's less load than a flat stick, and very easy to do.
I've been using that white tape for years along with a photo RPM tach. Much safer and easier to do than sticking some sort of dummy prop on the motor shaft.

If your tach doesn't respond, just shine a flashlight on it. If you do this inside, just make certain that all indoor lights, especially florescent types are turned off, or your tach will read 3600 RPM.
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