Re: (ET) E-12 motor type]

[Christopher Zach <cz alembic crystel com>]

RJ Kanary wrote:
>          I don't think that's the case.It is a shunt wound motor.Note 
> the two field leads in the four position connector that also contains 
> leads for the Klixon® limiter in the field windings.
>
> What IS unique about these motors is the lack of a series field, such as 
> found in the E-15 and E-20 traction motors.

Oh, they don't have *any* series field? That would be interesting if the 
field diode blew up.

Just to be clear, the E20 is a shunt motor, however it does have a small 
field wound in series with the motor as well. The advantage to this is 
when the motor is loaded heavily the series field will add to the main 
field and limit the mac current on the armature. The disadvantage is if 
you're pulling something in reverse the field weakens the main field.

Which is why the E20 goes faster in R