Just a note on the breaker. Bill pointed out to me a few years ago that the breaker does not just interrupt the armature but the entire tractor. When I converted to an e-20 motor on my 12M he recommended I add the breaker after the disconnect. It makes sense also that this drops out the contactor etc and prevents a surprise restart of the motor.
Markus Lorch <mlorch vt edu> wrote:
John,
from what you explain it sounds like the same hookup my E20 has (no
guarantees). The "knob" sounds like the external heat/overload switch that
you can use to disconnect the armature. The other two thick wires on the
opposite side are the armature, the four little wires are the field (two of
them) and the other two seem to be an internal switch (it needs to be closed
for the standard elec-trac circuit to be working).
I have uploaded pictures of when I bench tested my E20 drive motor and how I
had it hooked up to two 6V batteries (one for the armature, one for the
field)
see http://markus.lorch.net/et/drive-motor-test/05060005.JPG
Hope this helps.
Markus
> -----Original Message-----
> From: elec-trak-bounces cosmos phy tufts edu
> [mailto:elec-trak-bounces cosmos phy tufts edu] On Behalf Of
>
john briese
> Sent: Monday, July 05, 2004 10:33 AM
> To: elec-trak cosmos phy tufts edu
> Subject: (ET) Alltrax...more help
>
>
> I am looking at the motor. There are two heavy gage red wires
> on a "knob" on
> towards the front of the tractor and a black and red wire on
> individual
> lugs on the back of the motor...which pair is the field? Also
> I have 4 light
> gage wire coming out the other end..how do I identify what
> these are. thanks John Briese
>
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