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Old 20th September 2013, 03:20 PM   #11
Mooly is offline Mooly  United Kingdom
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Maths isn't my strong point

You would need to know the rotational speed of the motor when its running on the frequency the turntable is designed to work on. Then work out how much slower (if going from 60 to 50hz) or faster (50 to 60hz) its going to run. Thats just a percentage ratio. Then you would have to work out the "gear ratio" of the motor pulley to the platter and recalculate a new pulley size.

Or... run the motor from a dedicated electronic quartz locked supply. I don't know if you can get kits for those but it wouldn't surprise me. Worth looking into I would say.
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Old 20th September 2013, 03:23 PM   #12
Mooly is offline Mooly  United Kingdom
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Quote:
Originally Posted by metalmark View Post
the sticker on the top says it will run on both 50 60hz ?
On the motor you mean. Well it will run on either. It will run on 40 hz and 70 hz too but all will give an incorrect speed for a turntable apart from the one frequency the motor pulley is designed for.

Its the same sort of motor as in an old clock. If you used it on the wrong frequency it would work but the clock would either gain or lose.
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Old 20th September 2013, 03:29 PM   #13
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thanks for your help ill try a bit more research
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Old 20th September 2013, 03:32 PM   #14
Mooly is offline Mooly  United Kingdom
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OK, no problem. You need to be sure you can get it to work
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Old 20th September 2013, 03:43 PM   #15
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i'll i can only try
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Old 21st September 2013, 10:22 PM   #16
berndt is offline berndt  United States
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Are you looking for one or trying to make one work?
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