Dear Ed,
There are lots of reasons other than the motor for poor runners, but
the motor can be a culprit. You really need a volt/ohm meter to test
the motor's current draw. The other thing you need to know is what to
expect as a normal value. With our switchers it is about 1/3 of an amp.
With our F units with the same physical size motor, but it was wound
differently for more power, it is just under an amp. For those using
DCC, Tony's has a very nice digital amp/volt meter. We use this for
testing all of our engines in for repair. I do not believe you need a
decoder, I test in analog mode using a DC shorting plug.
Best regards,
Don
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