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References: [ +subject:/^(?:^\s*(re|sv|fwd|fw)[\[\]\d]*[:>-]+\s*)*\[TowerTalk\]\s+Fw\:\s+Prop\s+Pitch\s+Motor\s+Power\s+Supply\s*$/: 4 ]

Total 4 documents matching your query.

1. [TowerTalk] Fw: Prop Pitch Motor Power Supply (score: 1): Author: "Gene Fuller" <w2lu@rochester.rr.com>; Date: Mon, 12 Apr 2010 01:17:30 -0400; AC or DC is the question. I have heard from several sources that the PPM's should be run from DC or else the brushes would not last as long as they might. I had run one for 30-40 years on AC, with sm; /archives//html/Towertalk/2010-04/msg00310.html (8,296 bytes)
2. Re: [TowerTalk] Fw: Prop Pitch Motor Power Supply (score: 1): Author: "Jim Hargrave" <w5ifp@gvtc.com>; Date: Mon, 12 Apr 2010 08:13:17 -0500; Gene, I'm no expert on motors, but will offer my experience. The prop pitch motor is a AC/DC type motor, however it was designed to run on 28 VDC. I have used a small Prop Pitch motor since the 1960'; /archives//html/Towertalk/2010-04/msg00313.html (11,752 bytes)
3. Re: [TowerTalk] Fw: Prop Pitch Motor Power Supply (score: 1): Author: "Gene Fuller" <w2lu@rochester.rr.com>; Date: Mon, 12 Apr 2010 10:03:40 -0400; Thanks Jim, it sounds like you have a really nice setup. I've gotten to the point where I should be looking at something more like that. I have moved the power supply to the base of the tower, but a; /archives//html/Towertalk/2010-04/msg00315.html (14,561 bytes)
4. Re: [TowerTalk] Fw: Prop Pitch Motor Power Supply (score: 1): Author: "Jim Hargrave" <w5ifp@gvtc.com>; Date: Mon, 12 Apr 2010 10:34:53 -0500; Gene, I have never had to replace the brushes on mine. Each time I serviced it, I chucked the rotor shaft in a drill press and cleaned the commutator with emery cloth. Then I cleaned each slot with a; /archives//html/Towertalk/2010-04/msg00317.html (17,761 bytes)

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