Variable Speed Motor for Tangley Roll Frame
By Robbie Rhodes
A suitable motor to drive a Tangley or Coinola (Operators) music
roll frame in a calliope would be a DC motor for an electric scooter.
Such motors are available from surplus electronics firm and at
Internet sites such as eBay.
Scooter motors manufactured for Currie Technologies have a wound
rotor with commutator and brushes and a permanent magnet stator, and
so will also work as a DC generator. As a motor, the shaft speed is
proportional to the input voltage and the current varies with the load
A 1/6-horsepower (135 watts) 24 VDC 3000 RPM motor, including a pulley
for 3 mm pitch belting, is offered for $15 at
(Message sent Thu 22 Jul 2010, 20:07:47 GMT, from time zone GMT-0700.)