Re: (ET) Re: ET reliability

["RJ Kanary" <rjkanary nauticom net>]

    Is it within the realm of possibility that there exists some confusion 
between the E-12 S, which has a front mount mower and electronic controls, 
the E-12, which also has a front mount mower, but has a centrifugal switch 
on the traction motor, traction  motor reversal handled by contactors and 
the E-12 M, that has the same electrical configuration as the E-12, but has 
a mid mount mower ?

----- Original Message ----- 
From: "Elie, Larry (L.D.)" <lelie ford com>
To: "SteveS" <ssawtelle fcc net>; "et" <Elec-trak cosmos phy tufts edu>
Sent: Thursday, November 04, 2004 10:53 AM
Subject: RE: (ET) Re: ET reliability


> I'm a bit surprised.  I've reversed an E12S at speed PULLING A TRAILER 
> without consequence.  An E15 under similar circumstances fried a board. 
> The worst I've done is overheat a thermal switch on the drive motor which 
> reset in 10 minutes.  That was disking in D2 for too long.  I've not tried 
> an E20/I5 because I don't have one.  I like simple, and even if something 
> on an E12S goes, it's not too hard to fix.  BTW, my E12S doesn't even have 
> any control boards to corrode or fry like a newer models; it's all relays, 
> contactors and wire.  Very robust.
>
> Larry Elie
>
>
> -----Original Message-----
> From: elec-trak-bounces cosmos phy tufts edu
> [mailto:elec-trak-bounces cosmos phy tufts edu]On Behalf Of SteveS
> Sent: Thursday, November 04, 2004 10:24 AM
> To: et
> Subject: Re: (ET) Re: ET reliability
>
>
> My understanding is that an E12S is an E15 without the field-weakening
> throttle positions (not a PM either). So it is a pretty simple machine.
> However, mine does not tolerate reversing without stopping first - the
> reverse relay gets eaten. My E20, on the other hand, seems to tolerate
> indiscriminate reversing pretty well (no problems yet).
>
> - SteveS
>
>
> David Roden (Akron OH USA) wrote:
>
> > If I'm not mistaken, the later E12 had a PM motor; early production was 
> > wound
> > field type.  I was thinking that the later PM model was the E12S, but 
> > perhaps
> > not (or perhaps that's not the "S" difference).
> >
> >
> > David Roden - Akron, Ohio, USA
> > 1991 Solectria Force 144vac
> > 1991 Ford Escort Green/EV 128vdc
> > 1970 GE Elec-trak E15 36vdc
> > 1974 Avco New Idea 36vdc
> > = = = = = = = = = = = = = = = = = = = = = = = = = = = = = = = = = = =
> > If voting changed anything, they'd make it illegal.
> >
> >                               -- Emma Goldman
> >
> > = = = = = = = = = = = = = = = = = = = = = = = = = = = = = = = = = = =
> >
> >
> >
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>
>
>
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