From: "Mike Wallace" <metman glasgow-ky com>
To: <ThompsonG DFO-MPO GC CA>,<elec-trak cosmos phy tufts edu>
Subject: Re: (ET) Electric Tractor Conversion Update
Date: Tue, 21 Nov 2006 08:07:22 -0600
Geof and all,
Speaking of converting from ICE to electric, I could use some advice and/or
tips on doing something similar myself. Ever since I met Shawn Lawless
last year at the Louisville Lawn Expo and saw his ZTR, I've wanted to try
something similar.
I recently bought an older (late 80's maybe) Model 411 Grasshopper with
intentions of converting it. It currently uses an 11 hp Briggs (horizontal
shaft) driving two Eaton hydro units that then drive the wheels through
13:1 double chain reduction systems.
I'm thinking about using two E15 drive motors and two Alltarx units to
drive them. Without a lot of major changes, I think I can position the two
drive motors parallel to each other with one pointing east and the other
pointing west. I'll mount the smallest possible #40 sprockets to the
output of each motor to drive the first 4:1 reduction.
One possible problem I'm wondering about is that one motor will be turning
it's normal "optimum" direction and the other will be essentially running
in reverse while the mower is going forward. And visa versa for when
backing up.
Do I need to consider modifying the brush position/location or even
possibly the field winding connections such that when going the predominate
forward direction, both motors are in "optimum" direction mode?
With the Briggs engine gone, (this is a front mounted deck Grasshopper with
the single tail caster wheel) I figure there ought to be plenty of room to
finally do something with those 60+ Saft BB-600 NiCads I've had for about a
year now.
I figure I'll replace the current shaft driven 36" deck with a 42" ET deck
and that swap shouldn't be a big deal.
Any of you guys got any suggestions or words of wisdom for me?
Mike in KY
----- Original Message -----
From: ThompsonG DFO-MPO GC CA
To: elec-trak cosmos phy tufts edu
Sent: Tuesday, November 21, 2006 6:38 AM
Subject: (ET) Electric Tractor Conversion Update
Hello All
www.electriclawntractor.com
Edmonds Electric says the Electric Conversion Kids will be ready early
2007 at $2000, (not sure if that Canadian or American).. I also noticed a
36V to 120AC solid sate inverter.
I've got a nice little Cub Cadet just waiting for a transplant.
Geof Thompson
A-60,
E-81,
ER8-36,
R-36
E-8,
E-10x2,
E-12M,
E-12,
E15x2,
E-20x2,
B-145X2,
C-185,
E-141X2.
I-5
(21)
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