Re: (ET) E-12 with shunt motors and speed controls with blocked off positions.

["RJ Kanary" <rjkanary nauticom net>]

 The traction motors used in the E-12, and E-12 S applications, are not
quite as stout, as those found in the E -15. It would be interesting to see
how they would react, being operated under a weakened field regime. The
E -12, in particular, would have to have the centrifugal switch made 
capable
of preventing field weakening. The E12 S, would be a simpler matter. Just
get the control card, and associated wiring, from a E -15 AA to GA model,
and transplant it.


RJ Kanary
Member TRNi  Since 1998
ASE® Certified Master Auto Technician

rjkanary nauticom net

----- Original Message -----
From: "Steven Naugler" <snaugler earthlink net>
To: <elec-trak cosmos phy tufts edu>
Sent: Monday, July 29, 2002 8:17 PM
Subject: (ET) E-12 with shunt motors and speed controls with blocked off
positions.


> Early E-12s came with permag motors.  Per Bill Gunn the permag motors 
> lost
> their magnetization so General Electric started using a shunt wound motor
in
> the E-12s.  Bill called one of those models an E-12S, although I don't
know
> if that was the official designation from GE or Bill Gunn's own
description.
>
> I almost bought an E-14 once, but the owner had an inflated view as to 
> its
> value ($400 10 years ago needing some repair).  It essentially was an 
> E-12
> with the shunt motor.
>
> Also, GE did not make a special speed controller fot the E-12.  They did
use
> the E-15 control with the welded plate blocking off the higher speed
> positions.  With some effort any E-12 with a shunt traction motor could 
> be
> turned into an E-15.
>
> Steve Naugler
> snaugler earthlink net
>
>
>