> ... there's a non-contact infra-red thermometer available at
> Harbor Freight Tools: ...

Just be sure that you get a thermometer that has a temperature range
that's suitable: the inexpensive thermometers like the one mentioned
only go up to 110 degrees C.  What _are_ the specs for surface temps
of motors such as those in Duo-Art pianos?

Todd Augsburger - Roller Organs
www.rollerorgans.com

 [ 110 deg. C. (230 F.) will nicely fry an egg!  ;-)  -- Robbie