Re: (ET) Note! Newer window motors do not work with Elec-Trak!

["Dave & Deb" <daveb drizzle com>]

can't comment on plan feasibility and have thought of doing similar but
the few times I've gone looking for a 36v to 12v converter I've come up
empty.  if you find 'em and can please share the source!
thanks,
Dave

> Just got my 12V winch with forward/reverse for about $75 shipped from
> eBay. Took a while to find a winch that had reverse that didn't end up
> going for more $$$. I really wanted to mount it inside, but it looks
> like  it's going to be too wide. Reading the manual it's rated for .85HP
> but it  says it will draw 90 Amps! when pulling 2000Lbs, no load draw is
> 10A, has  a PM intermittent use motor.
>
> The plan is to mount a 12V 17Ah SLA in the tractor somewhere and feed it
>  with a 36V to 12V converter (I have a large 3A from eBay that I read
> about  here and a small 4A one I got from a surplus place) and run all
> my 12V  accessories from the battery, use it as a buffer for peak loads,
> like this  lift.
>
> Do you see any flaws with this plan? Do you think I would need a charge
> controller if I wire this through the main disconnect so it only gets
> powered when I'm using the tractor?
>
> Jeff Tickner
> Technical Support
> 800-545-9485, Ext 536
> SoftLanding Systems
>
>
>
> Chris Zach <czach computer org>
> Sent by: elec-trak-bounces cosmos phy tufts edu
> 11/26/2004 04:25 PM
>
> To
> Elec-trak list <elec-trak cosmos phy tufts edu>
> cc
>
> Subject
> (ET) Note! Newer window motors do not work with Elec-Trak!
>
>
>
>
>
>
> Markus has a very nice web page with a description of the Elec-trak lift
>  motors, along with a suggestion that a 96-2000 chevy S10 motor might
> work.
>
> I just got one on Ebay; no go.
>
> The bolt pattern is different and smaller, the gear itself is slightly
> bigger (so nothing lines up) and the motor itself has a much smaller
> armature and is a pernament magnet type motor, not a series wound model.
>
> In other words, it isn't going to work. Being a PM motor, running it
> over-voltage will wind up with a permanent field weakening condition
> (since the magnets don't change their field) and a burned out armature
> in no time.
>
> Time to buy a real one.
>
> Chris
>
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