"andy" wrote:
if a tach is what you
are after, I have had good luck with a $24 unit sold by Tower Hobbies
for tuning model airplane engines.
you would have to put a piece of tape on the flywheel to mimic an
airplane prop.

Thanks. Yep, this prob solved but the tach idea looks interesting. If
I understand correctly, it would work by running the motor with the
cover off and pointing the tach at the flywheel? .... and what kind
of tape? If it works the way I understand it, you could measure rpms
of practically ANYthing with it. Is that right?

By the way, they sell three tachs. I read up on only one.

Rick