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Author Topic: Potts motors-2 pin vs. 3 pin Galen Murphy-Fahlgren Master Film Handler Posts: 405 From: Canton, MI, USA Registered: Oct 2007 posted 03-08-2008 09:47 PM                     Are Potts platter motors with two pin connectors compatible with platter trees with three pin connectors? My tech sent me replacements with two pin connectors, and they don't seem to work in rewind on my three pin trees. He insists that they should work fine, but I'm confident that I am installing it correctly, and it only operates in payout operation.  |  IP: Logged Tim Reed Better Projection Pays Posts: 5246 From: Northampton, PA Registered: Sep 1999 posted 03-08-2008 11:50 PM                       That's a #1740 motor, which is for an AP (auto-programming) platter. You need the #1826 motor, for an Alpha platter. The motors themselves *will* work electrically, but you first have to take them apart and transfer the 1826's cable, internal resistor, and housing to the 1740 motor. If you're not comfortable performing surgery, it's probably easier just to get the proper motor to begin with.  |  IP: Logged Galen Murphy-Fahlgren Master Film Handler Posts: 405 From: Canton, MI, USA Registered: Oct 2007 posted 03-09-2008 06:46 PM                     Okay, that answers my question. Now to convince my tech...  |  IP: Logged Louis Bornwasser Film God Posts: 4441 From: prospect ky usa Registered: Mar 2005 posted 03-09-2008 07:33 PM                        This is nothing new; any tech would know this from experience. (I have made this mistake myself, since most Potts/Strong are NOT autoprogramming and the 3 pin is the USUAL.) So, we stock both. Louis  |  IP: Logged

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