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Old 06-28-2010, 10:35 PM
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SkyWatcher SkyWatcher is offline
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Join Date: Apr 2008
Posts: 2,419
Hi gyula, thanks for reply. I am using 1 coil in between magnets, for 6 total. The stator plate is 3/8" thick so distance between rotor magnets will be a little more than 3/8". Garry switched to using 6 magnets per rotor and 6 coil pairs, he just never removed the unused ones. I built it this size due to lack of materials. A prony brake test would be good to test COP, though in reality I enjoy building these things and it is not priority, I have not seen one prony brake test in all the thousands of posts at Peter's attraction motor thread, so it seems nobody cares anyway.
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