Re: (ET) Warn lift

[Dave & Debbie Barden <daveb seanet com>]

hmm hadn't seen that either. but it's bloody common on EV's so why not, 
except 
room for the extra 12v batt.  One of my etracs has no charger and does 
have 
room for a smaller 12v battery.  interesting idea, why didn't I think of 
that.

dave
seattle

> I was thinking that a meter might not accurately read the low-duty-cycle
> square wave that would be coming out of the controller.  If a cushion
> battery was used I think it would fix that problem, though.  I think you
> just suggested adding a 12V system to the tractor charged by the 36V
> system!  Haven't seen that thought go by before...
> 
> >>> "Christopher Meier" <mr23 mn rr com> 2/18/2004 8:31:36 PM >>>
> 
> 
> Why not just measure the output voltage of the controller, measure the
> throttle 'pot' resistance/voltage at that output setting, and apply a
> fixed circuit (resistor or control voltage) in place of the throttle?  
> You
> may want several settings, one for 'float', one for 'charge', one for
> 'equalize'... depending on the type of battery used (uh, assuming a
> separate 12v battery is used as a cushion...)
> ----- Original Message ----- 
> From: Bob Murcek 
> To: Elec-trak cosmos phy tufts edu 
> Sent: Wednesday, February 18, 2004 3:10 PM
> Subject: Re: (ET) Warn lift
> 
> 
> It could be tricky to figure out where "1/3" was.  Probably the safest
> thing to do would be to start low and compare the speed of the winch
> running on a real 12V battery versus the controller until it was about 
> the
> same.  
> 
> >>> Dave & Debbie Barden <daveb seanet com> 2/18/2004 11:53:03 AM >>>
> yes that was mentioned a coupla weeks ago wasn't it.  never did hear
> the 
> results of anyone having had tried it.  I recall someone warning about
> the 
> probability that the controller may not be linear.
> 
> dave 
> seattle
> 
> > Or use a small solid-state controller with the throttle permanently set
> t> o 1/3.
> > 
> > >>> Dave & Debbie Barden <daveb seanet com> 2/18/2004 11:26:33 AM >>>
> > I assume its 12v, how will you power it?  I don't care to tap into the
> pa> ck and 
> > am looking for ways to eliminate that practice.  so far all i have come
> u> p with 
> > is to find a 36v-18v dc-dc converter (haven't yet found one) and run 
> > 36v
> > bulbs. 
> > this might be another alternative.  replace our lifts with this one and
> p> ick up 
> > something like this 36v-12v dc-dc converter:
> > 
> >
http://www.surpluscenter.com/item.asp?UID=2004021614481948&item=6-989> > 
> &catname=
> > 
> > this handles 5amps.  is that enough?  I was thinking of this to supply
> my>  
> > lights and other 12v needs.
> > 
> > dave
> > seattle
> > 
> > 
> > >  Good find !
> > >  
> > > Winch has 300 lb. single pull capacity. Plenty for the Elec-Traks
> > > Comes as a kit, switch, wires, mount and strap.  I ordered one today.
> > > Price is 194.94 plus shipping.
> > >  
> > > Keith Stieg
> > >  
> > > 
> > 
> > 
> > 
> > 
> > 
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