Okay, Curt is looking to replace the motor or have this motor fixed if possible. Can anyone on the list help Curt in maybe fixing the motor so it runs properly or finidng a replacement motor?
-----Original Message----- From: Rich <[email protected]> To: Antique Phonograph List <[email protected]> Sent: Fri, Feb 15, 2013 3:37 pm Subject: Re: [Phono-L] Turntable Motor Question He was advised that it was a short. You are correct that the correct ondition condition description is OPEN Circuit. If the fields happen to e in parallel then that would be where I would start looking. On 02/15/2013 01:04 PM, Jim Nichol wrote: Al didn't say you had a "short". He said you had an "open". They are pposites of each other. He only mentioned "shorted turns" to imply that they re NOT likely to be the problem. A broken wire is an "open", resulting in zero current. A "short" is two wires ouching each other, causing the current to take a shorter path than intended. n a lamp cord a short would blow a fuse, whereas an "open" would prevent urrent from flowing. I recommend not saying "short" when you mean "open" though many electrical novices do). If you said you thought "the motor has a hort" at a repair shop, it would mark you as unknowledgeable, maybe setting ourself up to be ripped off. The symptom of an "open" in your motor would be that nothing happens at all. n the other hand, saying the motor has a short (or more specifically "shorted urns") means that a few of the loops of wire in the coils are shorted together, ausing the current to bypass them. This would lower the overall resistance of he coils, thus increasing the current. The motor would still run, but would ave less magnetic torque (because some of the turns of wire are not carrying urrent), and the remaining turns would get hot. Sorry for the lecture, but as an electrical engineer, this is one of my pet eeves. Jim On Feb 15, 2013, at 8:53 AM, Vinyl Visions<[email protected]> wrote: > Al,Thanks for the reply. As you noted, I have been advised that it was a hort in the motor somewhere. The problem seems to be that this motor is wound or three different types of power - AC/DC and maybe 220. So, either the shops on't know what the problem is or they just don't want to mess with it... I'm ending toward the latter, since the guys I sent it to are very knowledgeable. here is a picture of the motor on our website: www.carolinaphonosociety.com > A shortcut to the pic is: > http://open1234.wix.com/camps-site/twilight-zone-2#!__fairy-phono-lampCurt > >> To: [email protected] >> From: [email protected] >> Date: Fri, 15 Feb 2013 04:01:17 -0500 >> Subject: Re: [Phono-L] Turntable Motor Question >> >> >> Induction motors that lack torque can usually be traced to an open field oil or an open armature loop. A shorted turn will eat torque but the motor ill let you know by getting hot. How about a photo of the motor? Most good otor shops can fix anything from fractional horsepower to 100 HP. Do you now of a fan collector in your area? I have repaired fan motors that lost ower and have the same symptoms of your phonograph. These things are not ocket science. >> >> Best wishes, >> Al _______________________________________________ Phono-L mailing list http://phono-l.org ______________________________________________ hono-L mailing list ttp://phono-l.org _______________________________________________ Phono-L mailing list http://phono-l.org
