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#1 DH1 ONLINE  

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Posted December 01, 2013 - 01:46 PM

I was going to keep this quiet but I figured I'd be missing some needed input that would make this project easier to do and better in the end.

 

ET3

d410.jpg

The idea is to take a BUSH HOG D4-10 and convert it to battery electric drive.

I figure the D4-xxx series tractors would be best to convert for a few reasons.

1 - They seem to be the most popular making them easier for me to get 1.

2 - They are a gear drive tractor and more efficient than a Hydro drive.

3 - They have a rear PTO that can be used for attachments.

4 - There seems to be a lot of room in the engine bay for Batteries.

 

For this project the goals are.

Must have more power and run time than ET2.

Must be able to pull a 10" plow through the dirt.

Would like it to look as original as possible.

Needs to be completed in time for 2014 Bush Hog Reunion/ Plowday.

 

As of now all I have for this project is the idea and a motor.

Motor I have has a 6hp continuous, 15hp peak rating, needs a 48volt battery pack and a 300amp controller.

Some time after Xmas in January I'd like to get a D4-10 tractor and start working on the project.

The better the tractor I start with the easier it will be and the more I will have to pay for it, however parts that won't be needed others might be able to use. The gas engine, clutch, drive-shaft, front PTO, starter/generator, fuel tank, battery box won't be used and can be sold/traded to help offset the cost.

 

I'm going to need you guys to kick my but every now and then as I have a bad habit of starting stuff and not finishing it. Too many ideas not enough time.

 


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#2 KennyP ONLINE  

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Posted December 01, 2013 - 01:51 PM

This sounds very interesting! Now to find you a tractor!


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#3 MH81 ONLINE  

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Posted December 01, 2013 - 02:06 PM

Hmmm, I know of this guy named Scott that has a couple...
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#4 MH81 ONLINE  

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Posted December 01, 2013 - 02:25 PM

I just was thinking that you might want the clutch? just for the PTO system? or isnt there any reason to have it with the controller.
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#5 DH1 ONLINE  

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Posted December 01, 2013 - 02:39 PM

I'm thinking to couple the motor directly to the trans-axle where the drive shaft would mount, not sure if it will fit under the tin.

To change gears, stop the tractor which stops the motor, shift and go again.

Controller turns the motor on and off + selects the RPMs.

DSC00009.jpg

DSC00013.jpg

post-22-132893686991.jpg

 

 

D4-xxx have a PTO clutch on the front of the motor, and PTO on the trans-axle for rear attachments.


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#6 Titus OFFLINE  

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Posted December 01, 2013 - 03:34 PM

The batteries are going to be tough to fit in there. 

 

You & I think alike, as ask Scott and Brian, I've said it a few times now that I want to turn a 7 or 10 into electric. I have access to plenty of golf car parts, including batteries, so that's not a problem, it's getting everything to fit.

 

48V system, you're looking at either X8 6 Volt batteries, which will give you the longest ride time. Deep cycle Trojan or US1800 would be your best bet. 

 

X4- 12V Deep cycle T-1275 Trojan

X6- 6V T105 or T605 depending on budget. 

 

Ezgos electric motors depending on year came in various H.P., stay away from the GE electric. Those had a high failure rate, and if I remember correctly, were only 2HP. Moved golf cars fine, but lacked power for obvious reasons. 

 

Those motors are open in the back, so you'd have to find a cover for it to keep it sealed, like a starter generator.

 

Now one thing I've been eye balling are the RXV motors. Again, made by Ezgo, the big advantage to them is the electric braking system. Once you let off the acc pedal, they car stops and won't move until you press the pedal again. Attaches to the motor, a 48V system and a larger controller.

 

I need to measure again, but I can't recall if the batteries would fit in the stock frame or not. 


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#7 Texas Deere and Horse OFFLINE  

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Posted December 01, 2013 - 03:49 PM

Doug, your a week too late. I could have met you in up state NY and sold you 1 of my parts tractors.

Will be watching as this comes along, I like the idea.
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#8 Texas Deere and Horse OFFLINE  

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Posted December 01, 2013 - 03:50 PM

You do have to clutch the trans to engage the PTO and also change gears. Are you going to use the BH clutch or turn the motor on and off?
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#9 DH1 ONLINE  

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Posted December 01, 2013 - 03:51 PM

You do have to clutch the trans to engage the PTO and also change gears. Are you going to use the BH clutch or turn the motor on and off?

 Turn the motor off and on.


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#10 IamSherwood OFFLINE  

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Posted December 01, 2013 - 06:58 PM

Great idea Doug. I'm looking forward to this build, and seeing the final

masterpiece. After taking ET2 for a spin last Sunday, I'm hooked.

 

I also look forward to kicking your butt, if you fall behind. :smilewink:  :smilewink:  :poke:


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#11 sacsr OFFLINE  

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Posted December 01, 2013 - 08:55 PM

Wish he was closer. I am trying to locate one up more toward his way.
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#12 Titus OFFLINE  

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Posted December 01, 2013 - 11:40 PM

Ill keep my eyes out for you too. So far I've got a lead in nothern NY near the boarder.
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#13 daytime dave OFFLINE  

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Posted December 01, 2013 - 11:56 PM

Good luck Doug.  Your initial proposals seem very sound.


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#14 CRFarnsworth ONLINE  

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Posted December 25, 2013 - 11:42 AM

 

 

I'm going to need you guys to kick my but every now and then as I have a bad habit of starting stuff and not finishing it. Too many ideas not enough time.

Have you progressed any further with this?  We are anxiously awaiting for more details and pictures.   :D   Rick 


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#15 DH1 ONLINE  

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Posted December 25, 2013 - 12:03 PM

As of right now all I have for this project is the motor.

 

001.JPG 009.JPG

Attached File  etekmanual.pdf   439.47KB   56 downloads


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