good speed stability. on a cylinder phonograph there is nothing to act as a flywheel, i am seriously thinking of adding a flywheel to the output shaft of the motor to increase the stability. a capstan from an old reel to reel tape recorder would work quite well i think.
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THEVICTROLAGUY
- Posts: 321
- Joined: Thu Feb 28, 2013 3:55 pm
Re: 2 minute electric Edison cylinder lathe / audio test
this is old stuff.maybe you have seen.
[url]http://www.floka.com/lofi/edison_cut.html[/url]
but i had great results with dc servo motor. once adjusted it is super stable. one opamp primitvo regulator.
ir sensor is to track rpm. i just sent signal to a frequency counter. and adjusted ref. voltage to get the desired rpm.
lo tech. but good enough.
my main problem was that i never had an original recording head.
still interested into your cutting geometry.
[url]http://www.floka.com/lofi/edison_cut.html[/url]
but i had great results with dc servo motor. once adjusted it is super stable. one opamp primitvo regulator.
ir sensor is to track rpm. i just sent signal to a frequency counter. and adjusted ref. voltage to get the desired rpm.
lo tech. but good enough.
my main problem was that i never had an original recording head.
still interested into your cutting geometry.