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Re: (ET) more snow thrower motor
- Subject: Re: (ET) more snow thrower motor
- From: "SteveS" <ssawtelle fcc net>
- Date: Thu, 21 Nov 2002 17:31:43 -0500
- References: <sddd10d9.098@GHSGWIANW2.GEISINGER.EDU>
- Sender: owner-elec-trak cosmos phy tufts edu
My original problem (extreme current draw - little rotation) seems to have
been due to the brush assembly being 180 out.
The whole rear housing (which holds the brush assembly and external brush
terminals) can be be put on 180 out as well, though I did manage to keep my
alignment marks for that and put back the way it was. The only asymetric
clue is a small hole which I imagine is a weep hole and should point down
(and is). I think rotating the whole rear assembly would have the same
result as rotating just the brush assembly.
The only thing that I can think of is to criss-cross the terminals
externally using jumpers.
- Steve
----- Original Message -----
From: "Bob Murcek" <rmurcek geisinger edu>
To: <>; <ssawtelle fcc net>
Sent: Thursday, November 21, 2002 4:58 PM
Subject: Re: (ET) more snow thrower motor
I don't know if it could happen in this case, but I once had a similar
problem because I accidentally rotated the brush assembly 180 degrees.
Sounds like the straps would make that difficult, though.
>>> "SteveS" <ssawtelle fcc net> 11/21/2002 9:39:42 AM >>>
I received 4-5 replies off list (trying not to embarrass me?) reminding me
that you can't just reverse the 'end' connections on a series wound motor.
Thanks all - pretty clear now that I think about it. The odd thing though
is
why it's going backwards. The amature connections are made by external
straps going to the external connections for the field windings. To reverse
the armature connections I guess I need to use jumper wires to criss-cross
the armature connections. I'll give that a try.
Experience is a great teaching aid.
Thanks again,
SteveS
E12S