Re: (ET) Snowthrower and weights

["Max Hall" <maxo iname com>]

Time for my annual active-batteries-as-counterweight post! Fa-la-la-la-la. 
I
have six T-105's out on the back of the tractor. See
http://www.maxmatic.com/electrak.htm. Those six are strung in series with
each other, and that six-battery string is in parallel with the six
batteries in the tractor. Good counterweight, and it adds greatly to the
throwin' time. I suppose because of all that Peukert stuff it might be
better than a factor of 2, but I never run the packs down all that far.

On a separate note, "liquid sodium" in your tires?! Naw. Sodium-something,
right? I mean, sodium is a buttery solid at room temperature, and dangerous
as hell.

-Max, snowless so far in Boston

----- Original Message ----- 
From: "makinglightning comcast" <makinglightning comcast net>
To: <elec-trak cosmos phy tufts edu>
Sent: Wednesday, December 01, 2004 6:20 PM
Subject: RE: (ET) Snowthrower and weights


> You might want to consider that adding weight can cause more wear on the
> wheel bearings.
> Although it will not offset the front weight, but will certainly add
> traction, you can add wheel weights to the wheels. I know with my John
Deer,
> I added double wheel weights and filled the tires with liquid sodium. 
> This
> made a huge difference in traction for my plowing.
>
> Maybe if you are not concerned with the bearing wear, you could add wheel
> weights, fill the tires, and add a weight box. You would then have to be
> careful that you did not accidentally hit your house as you might just
slide
> it into the backyard! LOL!
>
> Kevin
>
> -----Original Message-----
> From: elec-trak-bounces cosmos phy tufts edu
> [mailto:elec-trak-bounces cosmos phy tufts edu]On Behalf Of Klein Robert 
> W
> NPRI
> Sent: Wednesday, December 01, 2004 11:04 AM
> To: 'Christopher Zach'; Klein Robert W NPRI
> Cc: 'lec-trak ecosmos phy tufts edu'
> Subject: RE: (ET) Snowthrower Yahoo!
>
> I plan on building a rear weight box to slot into the frame.  Two pieces
of
> 1-5/8" x 1/4" thk flatbar bolted to a steel painted rocket box from army
> surplus should I need the extra weight.  I've got dual cast iron wheel
> weights for #110 per wheel.  With the chains it should hook up OK... I
hope.
> When I powered the snow thrower up, the dash meter read just on the high
> side of the green band.  I'll use my clamp meter tonight and get some 
> real
> numbers.
>
> Thanks again,
>
> Bob.
>
> -----Original Message-----
> From: Christopher Zach [mailto:czach computer org]
> Sent: Wednesday, December 01, 2004 10:48 AM
> To: Klein Robert W NPRI
> Cc: 'elec-trak cosmos phy tufts edu'
> Subject: Re: (ET) Snowthrower Yahoo!
>
>
> Klein Robert W NPRI wrote:
> > Well,  I hooked everything up last night and threw the switch.  Let me
> > tell you
>  > a C-185 with a snowthrower is HEAVY!  Holy Cow!  What a monster!
>
> Yep. Worse than that, it's all on the nose of the Elec-Trak, especially
> when you've got the thing lifted with the lift. Then it's a point weight
> ahead of the nose.
>
> Wait till you power it up and see what it does to your battery pack :-)
>
> >And I definitely need rear wheel weights to make it heavier and to help
> >with rear tire traction.
>
> I strongly recommend putting some serious weight as far back on the
> tractor as possible to balance it out. With all that weight on the nose
> you put a lot of stress on the front wheels and steering will skip to
> say the least.
>
> I weigh down the back with the weight box filled with old Hawker
> batteries. I can fit 12 batteries back there, which is about 250lbs.
> Since you're moving around a moment arm (the rear wheels) the further
> back behind the wheels you can put the weight, the better.
>
> Chris
>
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