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Re: (ET) Lithium batteries as replacement for AGM



Barry,

I imagine many of us would love to hear LOTS more about this.

Thon


On Feb 19, 2019, at 2:12 PM, <barry fredericktown com> wrote:

> Ken,
> 
> Please excuse me if you are not interested in my comments.
> Instead of replacing the AGM batteries you might want to consider 
> converting
> your ox to lithium
> I have installed Nissan leaf batteries in my Hustler Zero turn mower and 
> my
> go kart conversion. I have CALB 100ah in my New Idea garden tractor.
> These lithium batteries have worked flawlessly, except the one time I
> discharged my New Idea to far and lost a cell.
> I have included a link to my EV collection.
> If you are interested and want more information please let know.
> 
> Barry Elkin
> Littleton, NC
> http://www.oilfreemiles.com/Master%20Inages/Our%20Vehicles%20(1).jpg
> 
> 
> -----Original Message-----
> From: elec-trak-request cosmos phy tufts edu
> <elec-trak-request cosmos phy tufts edu> 
> Sent: Tuesday, February 19, 2019 12:00 PM
> To: elec-trak cosmos phy tufts edu
> Subject: Elec-trak Digest, Vol 17, Issue 15
> 
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> Today's Topics:
> 
>   1.  Electric Ox snowblower working again (Ken Olum)
>   2.  Bright Way vs. Universal Power Group (Ken Olum)
> 
> 
> ----------------------------------------------------------------------
> 
> Message: 1
> Date: Mon, 18 Feb 2019 18:11:59 -0500
> From: Ken Olum <kdo cosmos phy tufts edu>
> To: elec-trak cosmos phy tufts edu
> Subject: (ET) Electric Ox snowblower working again
> Message-ID: <q52zhqsu1xc fsf cosmos phy tufts edu>
> Content-Type: text/plain
> 
> Thanks very much to everyone who offered help and ideas last spring about
> getting my snowblower working again.  Here's what happened:
> 
> The problem was that the motor shaft was badly worn at the front 
> bearing.  I
> took it to my local welder who offered to build up the shaft, and then I
> could take it to the machine shop to have it ground down to the right
> diameter again.  I went ahead with this plan, but when I got to the 
> machine
> shop, it turned out the shaft was bent, and there was no way to fix it.  
> I
> don't know if this happened during welding or before.  This motor had a 
> very
> hard life.
> 
> So then I bought a Motenergy ME1007 through EVDrives.  This motor is 
> wider
> and not as long as one I had before, and has mounting holes in different
> places.  I had the machine shop redo the mounting system and also remount
> the motor that rotates the auger to get it out of the way of the new 
> drive
> motor.
> 
> I called Bercomac, the maker of the snowblower before conversion.  They 
> told
> me the first driven shaft in the snowblower should rotate 3600 rpm, which
> was the same as the new motor, so I coupled them 1:1 with a belt.
> I don't know the rpm of the old motor, but it had about 2:1 reduction.
> The result of this is that the snowblower runs much faster, and throws 
> the
> snow much further.  Naturally it also uses more energy to throw the same
> amount of snow.  On the other hand, in cases where I only have to throw 
> the
> snow once now, when before I had to throw it twice, it uses less energy.
> 
> So far I'm pretty happy, but we've only had a couple of fairly minor
> snowstorms.  It's possible that in the end I'll want to reduce the speed
> somewhat.
> 
> I finally managed to get in touch with Electric Tractor, Inc., who made 
> the
> Ox.  (Well, I think this is really the successor company that bought the
> first one of bankruptcy.  They are trying to get back in business and 
> claim
> to have a prototype of their new product.  I'll post if there's 
> progress.)
> They had not kept the information about the original motor, but they did
> confirm that the snowblower I have is the prototype, and no others were 
> ever
> built.
> 
>                                        Ken
> 
> 
> 
> ------------------------------
> 
> Message: 2
> Date: Mon, 18 Feb 2019 18:25:02 -0500
> From: Ken Olum <kdo cosmos phy tufts edu>
> To: elec-trak cosmos phy tufts edu, ev lists evdl org
> Subject: (ET) Bright Way vs. Universal Power Group
> Message-ID: <q52tvh0u1bl fsf cosmos phy tufts edu>
> Content-Type: text/plain
> 
> Hi, all.  I'm trying to replace the UB121350 AGM batteries that I have 
> in my
> Electric Ox.  I ordered new ones from Wholesale Batteries Direct, but 
> they
> are out and Universal Power Group is out at the warehouse also.
> They recommended that I get the Bright Way Group BW EV12-155A instead, 
> for a
> few dollars more.  Anyone have any experience with Bright Way?  I have 
> had
> good experience with Universal Power, and know nothing about Bright Way.
> The specs on their battery claim 1000 cycles to 50% DOD, which is pretty
> impressive for AGM, though that is not so important in a lawn tractor 
> that
> you don't use every day.  They claim 10 year calendar life, also quite
> impressive and more relevant to me.
> 
>                                        Ken
> 
> 
> 
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> End of Elec-trak Digest, Vol 17, Issue 15
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