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Et1 Sears Craftsman Electric Lawn Tractor


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42 replies to this topic

#1 DH1 ONLINE  

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Posted February 26, 2012 - 08:43 PM

Figured I better start a new thread on this build or rebuild.
I have this, http://gardentractor...__fromsearch__1
sears electric 00& (2).jpg sears electric 013.jpg

What I'm doing is rebuilding it to be a better more functional lawn tractor that can cut grass and do everything that the original gas version can do.
It gets a better motor, twice as many batteries, and a mower deck, using parts from both tractors to make ET1.
I picked this up yesterday, complete and fully function, it is identical, even the Model # is the same as the Blue one.
30529f8_20.jpeg 3465320_20.jpeg

I picked up an ETEK motor for it today, this will replace the 11hp B&S gas engine.
Etek motor is rated 6hp continuous, 15hp peak, 3456rpms at 48 volts, enough power to run the tractor and mower deck.
The Etek will need 48volts DC to power it, where to put 4 Deep Cycle batteries is going to be the biggest problem.
009.JPG 001.JPG
Attached File  etekmanual.pdf   439.47KB   87 downloads

So the process begins.

#2 wvbuzzmaster OFFLINE  

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Posted February 26, 2012 - 08:58 PM

Great project Doug, hope you get it working. Ya know, with two of them you don't have to undo ET1, just make ET3 or is that ET4? LOL

#3 trowel OFFLINE  

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Posted February 26, 2012 - 09:07 PM

Very intriguing project,

#4 Michiganmobileman OFFLINE  

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Posted February 26, 2012 - 09:11 PM

This will be neat to follow along with, thanks for sharing :thumbs:

#5 DH1 ONLINE  

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Posted February 26, 2012 - 09:12 PM

Thanks Casey, the blue one EV1 as it's named just sits around and doesn't do much, some of it's parts are needed for the grey one ET1.

What I want to do is to show people that by using common available parts, they can convert there riding lawn mower the same way this one will be done.
They can see what parts I used, where I got them from, how much it really costs. Also what kind of performance you could expect from it, cutting power and run time.
That's the goal for this one.
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#6 wvbuzzmaster OFFLINE  

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Posted February 26, 2012 - 09:21 PM

I see Doug. So ever since ET2 and the NI you left out ET1. So now it gets a new lease on life lol.

#7 Sparky OFFLINE  

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Posted February 26, 2012 - 09:39 PM

Hi Doug. Not green with envy or anything . My budget currently is under scrutiny . Glad somebody is trying this . It is not clear to me whether a controller is recommended or not . However a seat switch and manual disconnect should be there for at least service purposes.

I plan on digging into two electric golf carts to see if they are restorable. Haven't got them home yet. And the mud here ! I promised I would't whine too much to my wife but it don't matter, I be wasting my breath :D

#8 DH1 ONLINE  

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Posted February 26, 2012 - 09:54 PM

Hi Doug. Not green with envy or anything . My budget currently is under scrutiny . Glad somebody is trying this . It is not clear to me whether a controller is recommended or not . However a seat switch and manual disconnect should be there for at least service purposes.


I agree on the safety switches, the blue one has a dead man type foot switch, lift you foot and the tractor stops.
The Grey one I just got has all the factory safety switches in place so I plan on using some of them so that anybody even kids can run the tractor and not get hurt.
There also needs to be a manual battery disconnect that can be quickly used if the motor won't shut off when it's suppose to.

This type of motor does not need a controller as it only spins 72rpm per volt, 3456rpm at 48volts with no load on it, it behaves like a gas engines governor does at full throttle.
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#9 daytime dave ONLINE  

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Posted February 26, 2012 - 10:21 PM

Doug, I will be watching with much interest. Good luck.

#10 achomesteader OFFLINE  

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Posted February 27, 2012 - 05:22 AM

I'll be following along on this one Doug. You got me hooked.

#11 mjodrey OFFLINE  

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Posted February 27, 2012 - 05:39 AM

Doug,this is going to be a great project to follow,and I will be watching closely.

Edited by mjodrey, February 27, 2012 - 05:40 AM.


#12 DH1 ONLINE  

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Posted February 27, 2012 - 06:06 PM

Put the motor up for sale today, be nice to see somebody make use of it as it runs pretty good.
Also to get a few bucks to put back into the project.

Motor sold deleted video. 3/3/12

Edited by DH1, March 03, 2012 - 03:38 PM.


#13 IamSherwood OFFLINE  

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Posted February 27, 2012 - 08:20 PM

Cool project Doug. Looking forward to more updates.
I take it, you'll be trying to put in 12volt batteries, rather than 6volts?

#14 DH1 ONLINE  

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Posted February 27, 2012 - 08:38 PM

Cool project Doug. Looking forward to more updates.
I take it, you'll be trying to put in 12volt batteries, rather than 6volts?


Yes I somehow got to get 4 big 12volt batteries in there, I think 1 of them is going to have to be mounted back behind the seat. The bigger the battery pack, more amp/hrs, the longer the run time.
This fellow here uses the same motor I plan to, on a similar, newer, lawn tractor, and is a really good example of what I'm trying to do. He has 1 battery mounted out back.
Also a good example of what can be expected in what it can do.

http://www.evalbum.com/918
918a.jpg
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#15 MH81 ONLINE  

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Posted February 27, 2012 - 11:31 PM

Doug, with most of the 270 lbs of batteries up front, will you need to do anything to the front axel / pivot?




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