Re: (ET) RE: Hills

["RJ Kanary" <rjkanary nauticom net>]

If the control that you have can increase the field voltage above what
system voltage is, {36 V nominal} ,it might work. As the tractor was built,
third speed is full field voltage.


RJ Kanary  Bandi Bros. Inc.
Member TRNi  Since 1998
ASE® Certified Master Auto Technician

rjkanary nauticom net

----- Original Message -----
From: "Christopher Zach" <czach computer org>
To: "Elie, Larry (L.D.)" <lelie ford com>; "Rod Hower"
<Rod Hower ametek com>
Cc: <elec-trak cosmos phy tufts edu>; "'Christopher Meier'"
<mr23 mn rr com>; <owner-elec-trak cosmos phy tufts edu>
Sent: Wednesday, November 13, 2002 11:30 AM
Subject: Re: (ET) RE: Hills


> The regen braking on my E20 works fine as long as you're going in L or 
> LL.
> Once in D I think the gear ratio outweighs the regen.
>
> Chris
>
> ----- Original Message -----
> From: "Rod Hower" <Rod Hower ametek com>
> To: "Elie, Larry (L.D.)" <lelie ford com>
> Cc: <elec-trak cosmos phy tufts edu>; "'Christopher Meier'"
> <mr23 mn rr com>; <owner-elec-trak cosmos phy tufts edu>
> Sent: Wednesday, November 13, 2002 10:15 AM
> Subject: Re: (ET) RE: Hills
>
>
> >
> > Here's another interesting suggestion.
> > Since the E15 has a compound wound motor, you can increase voltage
> > to the field on the hill to force braking.  Has anyone tried this?
> > Perhaps the shunt field is not strong enough to cause regenerative
> braking?
> > Since I have a newer control system I think this is possible.
> > Perhaps the shunt field could use a few more turns to increase field
> > strength.
> > I did a similar system on a sep-ex golf cart motor that was on a 
> > Cushman
> > greens mower.  This mower is much heavier than an E15 but I was able to
> > maintain
> > the required 4 mph +/-0.5Mph except on steep hills.  I also worked with
> > Jacobson on this
> > system and they ended up patenting the speed control system.
> > Rod
> >
> >
> >
> >
>
>