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RE: (ET) Re: high powered garden tractor puller - longwinded newb ie
Found another email about a second pull with the same 3-20
http://cosmos.phy.tufts.edu/mhonarc/elec-trak/msg00678.html
-----Original Message-----
From: elec-trak-bounces cosmos phy tufts edu
[mailto:elec-trak-bounces cosmos phy tufts edu] On Behalf Of T Humphrey
Sent: Monday, March 22, 2004 10:32 AM
To: elec-trak cosmos phy tufts edu
Subject: (ET) Re: high powered garden tractor puller - longwinded newbie
OK Guys,
Help me out here. I remember someone here entering their tractor
in a pull and doing quite well with it. In fact I have the video
on my computer at home. Unfortunately I can't seem to find the
source at the moment.
Somebody must know where it is.....
The following is from the EV List.....
Stay Charged!
Hump
>
>
>-----Original Message-----
>From: owner-ev listproc sjsu edu [mailto:owner-
ev listproc sjsu edu] On
>Behalf Of Tom Shay
>Sent: Monday, March 22, 2004 3:12 AM
>To: ev listproc sjsu edu
>Subject: Re: high powered garden tractor puller - longwinded
newbie
>
>
>It sounds like making an electric tractor puller could be a fun
>challenge! How fast do these tractors go on a pull?
>
>I've got a Cub Cadet Model 147 Hydrostatic. It originally had a
single
>cylinder Kohler 14 hp engine. I did convert it to
>electric power and tried two different aircraft generators for
drive motors.
>It used two 12-volt starting batteries. Either electric motor
produced
>plenty of torque to easily spin the wheels. The motors turned
slowly on 24
>volts so that max speed was hardly more than a man could walk. I
wanted to
>but never got around to trying 48 or 72 volts.
>
>It's hard to imagine how a tractor like this might perform with a
50-65 hp
>engine or motor.
>
>Tom Shay
>
>----- Original Message -----
>From: "Geo" <george3476 aol com>
>To: <ev listproc sjsu edu>
>Sent: Sunday, March 21, 2004 6:56 PM
>Subject: high powered garden tractor puller - longwinded newbie
>
>
>> Hello folks, a newbie here,,,I've been thinking for awhile now
about
>> building an EV puller within the confines of an older IH Cub
Cadet
>> (1000 or _82 series) garden tractor chassis which are for the
most
>> part used exclusively in the National Quarter Scale pulling
series
>> with aftermarket single cylinder flathead 50-65 hp. alcohol
powered
>> racing engines (around 6500-7000 rpm) and superduty IH
drivelines in
>> a 1050 lb.Pro Stock class on pulling tracks from 200-250' in
length.
>> Being as electrics are supposed to be superior in torque for
short
>> distances I'm thinking that I could build an off the wall
puller with
>> an Emotor (I'm one of those "boat rockers", LOL)...we pull a
weight
>> sled (approx. 5000lbs.) that has a weightbox starting out over
the
>> sleds rear axle and then according to which gear the sled's box
is in
>> it goes forward till it's over a large flat skid pan making
it "dead
>> weight" thereby making it exceedingly difficult to pull until
the
>> tractor loses power/traction or makes a "full pull". I'd say it
takes
>> about 15-20 seconds or so to make a 200' pull plus the tractor
needs
>> to be driven slowly from pit to scales to track and back again,
>> ocassionally making 2-3 runs in a 5-10 minute period twice in a
day ,
>> second weight class about 1 1/2 hour later, of that 200' pull
the
>> pull starts out fast as possible but easy (getting up ground
speed
>> for momentum) and then you feel resistance coming on around the
75'
>> mark and gets more difficult thereon. I wish to maximize the
>> horsepower and rpms and minimize the front end weight but be
>> competitive (not asking for much, eh,,LOL). Was hoping to run a
motor
>> directly hooked to the transaxle without a clutch. Not sure
what
>> motor to run or motor/battery heat factors on a hot summers
day, but
>> here's what I'm looking at at the moment,,, a D&D ES15A 6.7"
dia.
>> 10hp.cont., 40hp. peak 48-96V. 62lb. motor, figure I can get
8ea.
>> 12V. for 96V. batteries - lookin at MK BT9516 AGM 34AH
24.44lbs. and
>> maybe a Zilla Z1K 1000 amp. controller (do I need something
this big)
>> all concealed within enclosed frame and underhood body work.
Maybe I
>> can bypass the reduction gear and go straight into the tranny
for 4
>> pulling speeds making for faster gearing, hoping for reverse on
motor
>> but not mandatory. No other tractor electrics except I need a
lanyard
>> pull type "kill" switch at the rear end, maybe an onboard
charger if
>> there's room or weight to play with. Does this sound like a
feasable
>> project or do I have my head on backwards,,,any
recommendations ???
>> also what other ev parts are neccessary for my application for
safe
>> operation ??? Thanks for any insight you can give me, I've not
found
>> any info relative to high performance applications on the net
sofar.
>> I may go for it if I cando at a reasonable cost...Thanks
again...Geo
>>
>> my pulling tractor photos;
>> http://photos.yahoo.com/george3476
>> my pulling club;
http://groups.yahoo.com/group/wnygardentractorpullers
>>
>>
>
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