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 JD SX75 go-cart thingy

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Moose
Lawren Wimberly
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1997 Murray
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1997 Murray
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PostSubject: JD SX75 go-cart thingy   JD SX75 go-cart thingy Icon_minitimeDecember 5th 2013, 11:33 am

I am using a JD sx75 frame and a 3 hp briggs running to a MTD brake shaft. I did a gear calculation and at 4500 rpm
it should go about 25 mph...... I'l get a few pics after school if I can.
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1997 Murray
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PostSubject: JD SX75 go-cart thingy   JD SX75 go-cart thingy Icon_minitimeDecember 5th 2013, 12:10 pm

the engine came off of a mower like this one:JD SX75 go-cart thingy 00p0p_10
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1997 Murray
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PostSubject: JD SX75 go-cart thingy   JD SX75 go-cart thingy Icon_minitimeDecember 5th 2013, 8:25 pm

a few mock-up pics
on the operating table
JD SX75 go-cart thingy Projec33
on 4 wheels!
JD SX75 go-cart thingy Projec32


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1997 Murray
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PostSubject: JD SX75 go-cart thingy   JD SX75 go-cart thingy Icon_minitimeDecember 5th 2013, 8:35 pm

one that whouldn't load
the break/drive shaft.
JD SX75 go-cart thingy Projec34
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JD SX75 go-cart thingy Empty
PostSubject: Re: JD SX75 go-cart thingy   JD SX75 go-cart thingy Icon_minitimeDecember 5th 2013, 8:48 pm

"thingy"... is that a proper term? lol.. looks like fun

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JD SX75 go-cart thingy Pbucket

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1997 Murray
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PostSubject: JD SX75 go-cart thingy   JD SX75 go-cart thingy Icon_minitimeDecember 5th 2013, 9:07 pm

idk........lol thanks for the imput I wasn't sure if anyone was seeing this.
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1997 Murray
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PostSubject: JD SX75 go-cart thingy   JD SX75 go-cart thingy Icon_minitimeDecember 10th 2013, 2:00 pm

suspension pics.
JD SX75 go-cart thingy Projec39
the clutch
JD SX75 go-cart thingy Projec40
the throttle
JD SX75 go-cart thingy Projec41

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1997 Murray
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PostSubject: JD SX75 go-cart thingy   JD SX75 go-cart thingy Icon_minitimeDecember 10th 2013, 2:09 pm

new throttle (pull start cord, I know.)
JD SX75 go-cart thingy Projec42
also I got a linkage for the clutch made. when I get someone to drive the murray while I sit on this start it (I cut up the shroud with the pull starter on it for my big go-cart.)
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PostSubject: Re: JD SX75 go-cart thingy   JD SX75 go-cart thingy Icon_minitimeDecember 10th 2013, 2:09 pm

Nice!

Where is that suspension spring located and won't it work against the clutch kinda?

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1997 Murray
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PostSubject: JD SX75 go-cart thingy   JD SX75 go-cart thingy Icon_minitimeDecember 10th 2013, 2:16 pm

oh, the clutch has enough throw that it dosen't matter. there is two springs, on the front of the subframe. they are valve springs from my 12.5 briggs.JD SX75 go-cart thingy Projec43
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PostSubject: Re: JD SX75 go-cart thingy   JD SX75 go-cart thingy Icon_minitimeDecember 10th 2013, 2:24 pm

1997 Murray wrote:
oh, the clutch has enough throw that it dosen't matter. there is two springs, on the front of the subframe. they are valve springs from my 12.5 briggs.JD SX75 go-cart thingy Projec43

Yea you got the point! To make a subframe that the transaxle can articulate on. Cool mod.

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1997 Murray
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PostSubject: JD SX75 go-cart thingy   JD SX75 go-cart thingy Icon_minitimeDecember 10th 2013, 2:40 pm

the stock holes didn't match the MTD transaxle mounts, so I made the subframe, and I got the idea.
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1997 Murray
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PostSubject: JD SX75 go-cart thingy   JD SX75 go-cart thingy Icon_minitimeDecember 16th 2013, 11:51 am

my belt is slippingJD SX75 go-cart thingy Icon_evil I used a clutch spring from a murray, got it as tight as I could, and it still slips. my engine pulley is suspected, as it is a 2" and it is driving a 3" on a tranny with a 7:1 gear ratio turning 20" tires. I think that I will pull the 4" off of the murray's tranny and use that as the tranny pulley on this one. if that doesn't work then I will get a new engine pulley.
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1997 Murray
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PostSubject: JD SX75 go-cart thingy   JD SX75 go-cart thingy Icon_minitimeDecember 18th 2013, 11:30 am

a romp! well, not really. JD SX75 go-cart thingy Icon_rolleyes

JD SX75 go-cart thingy Projec61
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PostSubject: JD SX75 go-cart thingy   JD SX75 go-cart thingy Icon_minitimeDecember 19th 2013, 3:08 pm

I am getting a new axle and using my chinese ATV engine. it is 150cc

JD SX75 go-cart thingy Projec67
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PostSubject: Re: JD SX75 go-cart thingy   JD SX75 go-cart thingy Icon_minitimeDecember 19th 2013, 5:00 pm

1997 Murray wrote:
I am getting a new axle and using my chinese ATV engine. it is 150cc

JD SX75 go-cart thingy Projec67
Oh boy could i have fun with that 4 wheeler and a stock craftsman.....  Twisted Evil 

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PostSubject: JD SX75 go-cart thingy   JD SX75 go-cart thingy Icon_minitimeDecember 19th 2013, 5:13 pm

I'm using the suspension to build the 1998 Murray for the buildoff.
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PostSubject: JD SX75 go-cart thingy   JD SX75 go-cart thingy Icon_minitimeJanuary 15th 2014, 11:16 am

hopefully I will get a axle for this on friday.
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PostSubject: JD SX75 go-cart thingy   JD SX75 go-cart thingy Icon_minitimeJanuary 21st 2014, 10:59 am

well, the belt still slips too much, so I'm thinking about buying sproceits for it. what do you guys think? what size should I get?
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PostSubject: JD SX75 go-cart thingy   JD SX75 go-cart thingy Icon_minitimeJanuary 21st 2014, 11:21 am

the tranny has a 7:1 ratio. and 18" tires.
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PostSubject: JD SX75 go-cart thingy   JD SX75 go-cart thingy Icon_minitimeJanuary 30th 2014, 10:53 am

I think i'm changing it again lol. I think that i will try to fix my 915 that I burned up and put it in this and use the kawisaki that is currently in the murray, make a cluch and lower the seat like Stretch44875's rer: https://www.atltf.com/t1080-first-fast-mower-built-rear-engine-hahn this is sort of what I'm aiming for. anyone else have ideas/concerns about rers? thanks.


Last edited by 1997 Murray on January 30th 2014, 1:56 pm; edited 1 time in total
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PostSubject: Re: JD SX75 go-cart thingy   JD SX75 go-cart thingy Icon_minitimeJanuary 30th 2014, 11:38 am

Just making it a rally rer? Sounds good to me!

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PostSubject: JD SX75 go-cart thingy   JD SX75 go-cart thingy Icon_minitimeJanuary 30th 2014, 11:42 am

yeah, basically
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PostSubject: Re: JD SX75 go-cart thingy   JD SX75 go-cart thingy Icon_minitimeJanuary 30th 2014, 3:00 pm

Pictures man! pictures!

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PostSubject: JD SX75 go-cart thingy   JD SX75 go-cart thingy Icon_minitimeJanuary 31st 2014, 11:14 am

here:

JD SX75 go-cart thingy Projec84

this is what it will look like, but with 19" tires in the back and 15" in the front, hopefully I can mock it up today.
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