RE: (ET) ELEC-TRAK in the UK Alltrax (do tell)

[ThompsonG DFO-MPO GC CA]

        Hi 
        PLEASE Tell us more about this Alltrax controller. 
        Geof Thompson B.Sc., C.L.S.
        905-336-4698 | facsimile / télécopieur 905-336-8916
        Thompsong dfo-mpo gc ca <mailto:Thompsong dfp-mpo gc ca >  
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        -----Original Message-----
        From:   Jim Coate [SMTP:jbc coate org]
        Sent:   Sunday, June 01, 2003 7:14 PM
        To:     ET
        Subject:        Re: (ET) ELEC-TRAK in the UK


        Using a PM motor would allow the use of more common controllers, 
but
as 
        David said the existing sep-ex motor is going to take a lot more
abuse. 
        Someone was selling a souped up ET with a series-wound motor and 
        matching controller - this would equal the grunt of the original
motor, 
        but loose the regen braking.

        Meanwhile Alltrax is working on a sep-ex controller and will be 
        specifically testing it on an ET (!). If you can wait a couple of 
        months, I'd suggest the keeping the original motor and using this
new 
        controller - their other controllers are good stuff.


        David Roden (Akron OH USA) wrote:
        > The wound-field motors are pretty darn stout.  You'll be amazed 
at
how strongly 
        > they can pull and how durable they are.  Many or all apparenly
have an internally 
        > connected series field, but the dominant field is the externally
connected 
        > separately excited field.  I've heard that the 4QD controllers
work well with these 
        > motors but haven't tried one yet.
        > 
        > Some of the E12s, and I believe all of the E8s and E10s, had PM
motors.  These 
        > didn't stand up well to overheating and are usually considered
less desirable than 
        > the GE wound-field motors.  In fact I can't think of any current
PM motor that 
        > would be a better choice than the wound-field for this
application.  
        > 
        > I believe they all used Peerless transaxles, but I don't know 
what
model or models.  
        > Someone else here probably does.

        Christopher GODDARD wrote:
         > I would like to update the motor
         >     to a modern highefficincy permant magnet motor and PWM
controller
         >     but how much power can the transmission take?


        _________
        Jim Coate
        1992 Chevy S10
        1970's Elec-Trak
        http://www.eeevee.com