Yes, DC is an option but it seems more moola.

"Tim Wescott" wrote in message
...
Tom Gardner wrote:

This dog won't stay petted!!! I have an application that unspools wire
with a dancer operated switch controlling a @35 RPM 1/15 HP ac gearmotor
belt driving a roller that a wooden spool fits on. I know I have to use
"Shaded Pole" or "Permanent Split Capacitor" motors as a cap start motor
will burn-up in a day due to the constant on/off switching. I have three
of these de-spoolers and need to make six more. These gearmotors are
about $250 ea and I have to replace at least two a year now. Any
suggestions an a better solution? Anybody got any gearmotors they want
to sell? I keep an eye on ebay and surplusscenter.
Consider using a DC motor. If you want to use a switch then the brute
force method is to use supply with some overhead and a great big resistor
to limit current to the motor. If you want to get fancy then use a
potentiometer on the dancer along with a PLC or other motion controller
(and get ready to learn about control theory, PID tuning, and a bunch of
other stuff, oh boy).

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Tim Wescott
Wescott Design Services
http://www.wescottdesign.com