Re: (ET) 48v ET

["Steve Richardson" <scr echoweb net>]

Hi Tim and everyone,

The Alltrax controller will work on 24 - 48V.  I made a 48 volt charger 
from
a 36V golf car charger by simply adding a few more turns of #10 magnet wire
around the existing winding.  The charge curve seems to be the same, since 
I
didn't change the capacitor.  The solenoids and such are also available 
from
golf car or fork lift suppliers.  Also new gages that look just like the GE
gages, for 48V.

Steve
Alltrax Inc.
541-476-3565

----- Original Message -----
From: "Chapin, Tim" <tchapin umich edu>
To: "'robert winfield'" <winfield100 yahoo com>;
<elec-trak cosmos phy tufts edu>
Sent: Friday, May 28, 2004 6:39 AM
Subject: RE: (ET) 48v ET


> I remember someone doing a 48 volt et a while ago and it held up just
fine.
> I was also thinking that we have an electric ox dealer (or soon to be 
> one)
> in the group now.  Maybe we could leverage that.  The original ox was 36
> volts and the last time I looked they still made them.  Here is a direct
> replacement for decks, deck motors and blades.  I would think it can't be
to
> hard to retrofit the new deck motors to the et deck, but what I have 
> heard
> is the et decks around are getting pretty tattered so going to the ox 
> deck
> might be a plus.
> I would guess the alltrax controller could handle 48 volts input so the
> converted machines could go to the ox 48 volt deck stuff, trash the
chargers
> that a lot of people complain about, replace it with the of the shelf
modern
> golf car charger..
>
> I would think that the new controller and ox parts, we can keep the
working
> et working....
>
> -----Original Message-----
> From: elec-trak-bounces cosmos phy tufts edu
> [mailto:elec-trak-bounces cosmos phy tufts edu] On Behalf Of robert
winfield
> Sent: Friday, May 28, 2004 9:05 AM
> To: elec-trak cosmos phy tufts edu
> Subject: (ET) 48v ET
>
> Is a 48v ET doable? It would make things much simpler.
> I could yank out that dratted charger and squeeze 4
> batteries in that area. E12
> Obviously it wouldn't void the warrenty but would it
> fry the components with 33% more voltage. (visions of
> Tim "tooltime" breaking stuff)
> I am setting up Photovoltaics to do my charging
> (shortage of big wattage PV in the US, Germany, soon
> Italy and Spain are greening their countries with
> federal subsidies so our prices are up)
> 24 and 48 volts seem a lot easier to get components
> for
>
> --- Anton Berteaux <krustyacres earthlink net> wrote:
> > also very much less efficient, and most of the
> > better quality (read
> > expensive ) electronic inverters are very close to
> > sine wave with less
> > distortion than a generator.
> > I would up the system voltage to 48, which allows
> > use of many off the
> > shelf inverters, and makes you go faster, too.
> > anton
> >
> > On May 27, 2004, at 10:46 AM, Dan Conine wrote:
> >
> > > A rotary inverter (in this case) is a 36VDC motor
> > which is run by the
> > > tractor. The motor is directly coupled to a 110VAC
> > generator.
> > >
> > > You get perfect sinusoidal power, vs. the
> > psuedo-simulated(modified
> > > sine wave) power from a solid-state inverter.
> > Simple, relatively easy
> > > to repair if you are living with a soldering iron
> > and a roll of magnet
> > > wire, and  civilization is gone.
> > > Disadvantage: brushes, bearings, armatures wear
> > out.
> > >
> > > Dan Conine
> > > 42
> > > E15, E10
> > > Belgium,WI
> > >
> > >
> > > _______________________________________________
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> > >
> > Warm globally,
> > Drive locally
> >
> >
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