I have a customer that among other things, rewinds obsolete air coil
electric motors. He has asked me about building a dyno so he can test
motors to something other than 'yep, it turns' under power.

Looking through SIC I only find one article on building a dyno. It looks
to be a fair bit of work. As he called me while on the road today and
the connection was bad, we couldn't really get into details. I am unsure
what HP and torque the motors develop, though it's not a lot. I also
don't know what rpm range he wants to test.
Did a bit of Googling and didn't find a whole lot on small model engine
sized dyno building.

Anyone know about web resources for different approaches?


Thanks,

Jon Anderson