[T3] Keith's armature

Keith Park topnotch at nycap.rr.com
Sat Jun 30 18:06:33 PDT 2012


Interesting.
I have one extra spare that I rebuilt and one more good core so I really
don't need it, so go ahead and keep it for your troubles.  I have the rest
and Ill save that for you, I think the only thing you'll have to replace on
the rest of it is the springs for the brushes, they are quite rusty.

I measured the fields, as I recall they were 1.8 ohms, but I do remember
that both were the same.  Good to get another genuine Bosch unit back out
there.

Keith


Top Notch Restorations
topnotch at nycap.rr.com 
http://www.a383ina68.addr.com/radiorest/main.htm
71 Squareback "Hothe"
65 Notchback "El Baja Rojo"
65 Squareback "Eggcrate"
87 golf "Winterat"
93 RX7 "Redstur"

-----Original Message-----
From: type3-vwtype3.org-bounces at lists.vwtype3.org
[mailto:type3-vwtype3.org-bounces at lists.vwtype3.org] On Behalf Of Jim Adney
Sent: Saturday, June 30, 2012 3:16 PM
To: type3 at vwtype3.org
Subject: [T3] Keith's armature

Keith gave me a Type 3 armature at the Invasion. I've tested it and 
it's good. The commutator still has pleaty of meat on it and the 
windings are good. I turned the commutator, and had to take off about 
.015" before it would clean up everywhere. There was a low spot where 
the dark areas were, so that may have been the problem.

Keith, if you want this back, you're welcome to it, otherwise save 
the housing w/field windings for me, as this appears to be a 
perfectly good spare. It's still possible, however, that there's a 
short in the field windings.

If you have a chance, it's easy to measure the resistance from the 
center of the 2 field coils to each side. They should be equal (2.0-
2.3 Ohms.) If they're not, that's a problem.

-- 
*******************************
Jim Adney, jadney at vwtype3.org
Madison, Wisconsin, USA
*******************************

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