Re: (ET) 48v electrac

[David C Robie <mycroftxx1 juno com>]

You'd also want to keep RTN so all the safties work. Unless the
controller's instructions have a workaround for it.

YAH it's a valid queston, and discussion point.  Looks like 2 batts would
fit in the stock weight box,  with a bonus of better traction.  (that way
you wouldn't nesessarily have to run your  tractor on 48, just the UPS.  
How about a pair of external batts not on the tractor and a couple long
jumpers for the UPS and furnace only?  I have a small (1500W)
semi-antique gas gen that should run my gas furnace electronics and
circulators.  And a couple smaller 12/120ac's  that would connect to the
2 tractors, 12V at a time,  to do the rest in a power out

Dave
Weymouth MA


On Fri, 3 Nov 2006 09:39:37 -0500 JBR <reinharj frontiernet net> writes:
> Also, use a solid state controller - so you don't have the relay coil 
> issue 
> mentioned previously. (Though you probably want a dropping resistor 
> on the 
> coil of the F/R relay, if you keep that).
> 
> I considered converting one of my E-Trac's to 48V because I have a 
> 48VDC 3KVA 
> UPS that would happily run for a while, off a the pack - and could 
> be carried 
> on the rear tool box (modified) - then, it could run 110VAC versions 
> of yard 
> tools - or, power my gas furnace blower/controls during a power 
> failure.
> 
> My plan was actually to continue with 6V Golf Cart batts, and add 2 
> into rear 
> box - just because these are the most economical size of the 
> battery.
> 
> So, Robert Winfield's question seemed like a good one, to me.
> 
> John
> 
> On Friday 03 November 2006 9:20 am, Matthew callahan wrote:
> > Not necessarily, you could get trojan T-890's or something like 
> those. 
> > They are 8 volt batteries with four cells instead of three, but 
> the same
> > size as a T-105 6V battery.  So you wouldnt have to pack a extra 
> two
> > batteries, and have more HP, but range should be about the same in 
> terms of
> > lead weight.
> >
> > The Electric Ox is a 48V tractor, and i assume they use the 8V 
> batteries.
> > Some golf carts are now using the T-890's at 48 volts instead of 
> 36, but
> > retain the same battery tray design and set-up.
> >
> > Matt
> >
> 
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