Re: (ET) DCP/Alltrax; Fw: death of a DCP raptor

["Christopher Meier" <mr23 mn rr com>]

That was my point for bringing this to the attention of the ET list.
The ET loafs along cutting grass, but when I put it to work pushing
snow, etc, I want to know I'm not going to be stranded out in the
street in 12" + snow at 20F or lower.  And the 10KW isn't the
important number, it's the design overhead. I've heard from Steve R
they are tested to 115% of nameplate, but I don't yet know what
overhead is built into the nameplate.   I'm sure there isn't 50KW
of overhead built in...

----- Original Message ----- 
From: "Jim Coate" <jbc coate org>
To: "elec trak" <elec-trak cosmos phy tufts edu>
Sent: Sunday, February 08, 2004 2:57 PM
Subject: Re: (ET) DCP/Alltrax; Fw: death of a DCP raptor


> Well now that everyone on this list knows of my misadventures...
> I'm guessing it was more than just simple overload. So not just needing
> more overhead. I was only at about half the current the thing should
> handle, and I've pushed it hard in other ways before with no problem.
> (like hauling sand and gravel last spring). Since it failed *after* I
> let up at the top of the hill and started coasting down the other side,
> I'm thinking something more complicated was going on.
>
> As for the ET controller... the irony is I had just called to order one
> a couple of days before calling to report my dead Raptor. This has all
> lead to something a a mind shift that early on I will test out the
> limits. ie set up the ET and try and tow a tree or push a concrete wall
> or go uphill in DD or otherwise see what it does with large loads. Then
> go a use it in a rain storm. On a super hot day. And so on. Assuming
> they still sell me the controllers after saying that publicly :-)
>
> And for comparison, I was playing with 60+ KW of power in the truck...
> the ET will be more like 10 KW max. So a bit easier to keep a handle on
> the behavior.
>
>
> Christopher Meier wrote:
> > FYI, for those of us considering the Alltrax Elec-trak controller...
> >
> > Guess we ought to ask how much 'overhead' is built into the Elec-trak
> > version compared to the Raptor.  I'd like to be able to push it to
> > nameplate ratings whenever I want or need; and the controller should
> > stay below it's programmed limits so that the 'overhead' isn't used up.
> > I don't want to be replacing controllers in my Elec-trak every so 
> > often.
> >
>
>
>
> _________
> Jim Coate
> 1970's Elec-Trak
> 1992 Chevy S-10 BEV
> 1997 Chevy S-10 NGV
> http://www.eeevee.com
>
>
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