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Article #20851

Help needeed with AC motor.

#20851
From: Seth Wolpert
Date: Wed, 22 Feb 1989 18:15
34 lines
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Hi there!

I need some help in fixing or replacing a motor from a Transcriptor
turntable I'm trying to restore.  The motor itself is french-made,
with the words "LIC. ATO  CROUZET 831A BREVETE S.G.D.G.".  The
problem with the motor is that the windings are open, but they're
all sealed in an opaque white plastic that appears to have been
molded on.  Alas, I cannot inspect them to check the location where
the input wire is spliced onto the winding wire, which is where I
suspect the break had occurred.  Are there any suggestions for how
to cut/melt/dissolve away the plastic at that site without damaging
the delicate windings underneath??  Am I better off just scrapping
the whole thing??

In that case, I will have to replace the motor.  Any suggestions on
where to find a compatible motor quickly and inexpensively?  THis one
is cylindrical, about an inch thick and just under two inches in
diameter.  It runs on 120VAC, and should turn (according to my
calculations on motor and platter pulley size and platter rotation
speed) at about 1800 RPM clockwise.  It's brushless and has five poles
on the rotor and five on the stator, but I'm not sure of how to relate
that statistic to overall engine RPM's.  (Help needed here, too.)

Since it is going into a nice turntable, the motor should be quiet,
smooth, and well-shielded.  Any help would be sincerely appreciated.
Please e-mail or post if you desire to enlighten the rest of us.

Many thanks..

Seth Wolpert
********************************************************************
SW** I LOVE mankind-it's PEOPLE I can't stand!  Linus Van Pelt  **SW
********************************************************************
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Message-ID: <Feb.22.13.15.20.1989.9470@caip.rutgers.edu>
Path: arc1-ca.pugleaf.net!utzoo!utgpu!jarvis.csri.toronto.edu!mailrus!iuvax!rutgers!caip.rutgers.edu!wolpert

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Path: arc1-ca.pugleaf.net!utzoo!utgpu!jarvis.csri.toronto.edu!mailrus!iuvax!rutgers!caip.rutgers.edu!wolpert
From: wolpert@caip.rutgers.edu (Seth Wolpert)
Newsgroups: sci.electronics
Subject: Help needeed with AC motor.
Keywords: motor
Message-ID: <Feb.22.13.15.20.1989.9470@caip.rutgers.edu>
Date: 22 Feb 89 18:15:21 GMT
Organization: Rutgers Univ., New Brunswick, N.J.
Lines: 34