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 More Speed for Cub Cadet LT1040 CVT?

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Budget_gokart
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More Speed for Cub Cadet LT1040 CVT? - Page 2 Empty
PostSubject: Re: More Speed for Cub Cadet LT1040 CVT?   More Speed for Cub Cadet LT1040 CVT? - Page 2 Icon_minitimeThu Oct 07, 2021 6:59 pm

I am not sure on part numbers I used some old pulleys I had lying around, I used the stock variator that was on the tractor. the tractor was about a mid-90s pan frame with an 11.5 Briggs the tractor looked like this.More Speed for Cub Cadet LT1040 CVT? - Page 2 32450911the trans was a single-speed fnr like thisMore Speed for Cub Cadet LT1040 CVT? - Page 2 Mtd-si11

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Budget_gokart
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PostSubject: Re: More Speed for Cub Cadet LT1040 CVT?   More Speed for Cub Cadet LT1040 CVT? - Page 2 Icon_minitimeThu Oct 07, 2021 8:23 pm

Oh hey i just had time open up and i got on the 5 inch in the rear will get ya where ya need to be then

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CuberCadet
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PostSubject: Re: More Speed for Cub Cadet LT1040 CVT?   More Speed for Cub Cadet LT1040 CVT? - Page 2 Icon_minitimeThu Oct 07, 2021 8:30 pm

@Budget_gokart wrote:
Oh hey i just had time open up and i got on the 5 inch in the rear will get ya where ya need to be then

So switch out the rear 7inch for a 5inch and I should be good to go?
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More Speed for Cub Cadet LT1040 CVT? - Page 2 Empty
PostSubject: Re: More Speed for Cub Cadet LT1040 CVT?   More Speed for Cub Cadet LT1040 CVT? - Page 2 Icon_minitimeFri Oct 08, 2021 8:25 am

lately ive really been wanting a pan frame lol 3 or four epic mud mowers idiolize are pan frame mtds
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Nevadablue
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PostSubject: Re: More Speed for Cub Cadet LT1040 CVT?   More Speed for Cub Cadet LT1040 CVT? - Page 2 Icon_minitimeFri Oct 08, 2021 1:16 pm

Pan frame? The one with the built in running boards like this? 

More Speed for Cub Cadet LT1040 CVT? - Page 2 41d50410
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PostSubject: Re: More Speed for Cub Cadet LT1040 CVT?   More Speed for Cub Cadet LT1040 CVT? - Page 2 Icon_minitimeFri Oct 08, 2021 1:29 pm

yes just like that those 12.5 briggs are good motors i have one
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PostSubject: Re: More Speed for Cub Cadet LT1040 CVT?   More Speed for Cub Cadet LT1040 CVT? - Page 2 Icon_minitimeFri Oct 08, 2021 2:40 pm

Whats the string measurement you guys use to measure for replacement belt when I go from the 7inch to the 5inch rear pulley?

T.I.A.
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Nevadablue
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PostSubject: Re: More Speed for Cub Cadet LT1040 CVT?   More Speed for Cub Cadet LT1040 CVT? - Page 2 Icon_minitimeFri Oct 08, 2021 5:19 pm

Cut an old belt (mower deck belts seem to be generally LONG) and wrap it around the pulleys. Use tiewraps to hold it at the proper length. Take that to the parts store and use their belt measuring tool. IMO

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Nevadablue
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PostSubject: Re: More Speed for Cub Cadet LT1040 CVT?   More Speed for Cub Cadet LT1040 CVT? - Page 2 Icon_minitimeFri Oct 08, 2021 5:21 pm

@Budget_gokart wrote:
yes just like that those 12.5 briggs are good motors i have one


I have stripped that machine. If you were close enough you could have this frame. Sigh... shipping costs are just nuts. 
I’m hoping that engine is good. That rig was free to haul home. No hood, but everything else was there.
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CuberCadet
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PostSubject: Re: More Speed for Cub Cadet LT1040 CVT?   More Speed for Cub Cadet LT1040 CVT? - Page 2 Icon_minitimeSat Oct 09, 2021 2:25 am

Thanks Nevadablue

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More Speed for Cub Cadet LT1040 CVT? - Page 2 Empty
PostSubject: Re: More Speed for Cub Cadet LT1040 CVT?   More Speed for Cub Cadet LT1040 CVT? - Page 2 Icon_minitimeTue Oct 12, 2021 3:32 pm

Hello again Everyone,
So I was able to pick up the exact 5inch pulley you recommended and yet it  seem to fit...

More Speed for Cub Cadet LT1040 CVT? - Page 2 20211010
More Speed for Cub Cadet LT1040 CVT? - Page 2 20211011

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CuberCadet
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PostSubject: Re: More Speed for Cub Cadet LT1040 CVT?   More Speed for Cub Cadet LT1040 CVT? - Page 2 Icon_minitimeWed Oct 13, 2021 5:36 pm

What are my options with this new 5 inch pulley? Or am I going to need to weld?
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MightyRaze
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PostSubject: Re: More Speed for Cub Cadet LT1040 CVT?   More Speed for Cub Cadet LT1040 CVT? - Page 2 Icon_minitimeWed Oct 13, 2021 10:21 pm

It will need welded.  Even a 3-4 good booger welds with some symmetry would work.

_______________________________________________
Tractors:
Li'l Red 89 Murray Widebody
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TheGreenMachine 89 Craftsman GT18
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PostSubject: Re: More Speed for Cub Cadet LT1040 CVT?   More Speed for Cub Cadet LT1040 CVT? - Page 2 Icon_minitimeWed Oct 13, 2021 10:23 pm

Thnks MightyRaze!

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PostSubject: Re: More Speed for Cub Cadet LT1040 CVT?   More Speed for Cub Cadet LT1040 CVT? - Page 2 Icon_minitimeWed Oct 20, 2021 3:39 pm

Hello again Good People,

I was able to get the 5inch pulley installed with a 35inch belt on the tractor and took it for test drive. The experience was about the same. I did notice when in forward gear the tractor now slowly moves forward without using the gas pedal. Same if I am in reverse gear - tractor slowly moves in reverse with gas pedal.

Am I in the correct direction?
Should I be using an even smaller belt?

T.I.A.
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MightyRaze
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PostSubject: Re: More Speed for Cub Cadet LT1040 CVT?   More Speed for Cub Cadet LT1040 CVT? - Page 2 Icon_minitimeWed Oct 20, 2021 4:11 pm

The 5 Inch was put on the rear I am guessing.  Does the new belt have the same width and depth (V) as the old belt?  I know some of those had a shallower V in them.  Your new belt could be a little more "V'd" than the original allowing it to dig further into the varidive pulley causing it to actually slow a bit.  Also, it could be causing the drive belt to have a little more tension on it's side (not allowing it to separate the drive side) causing it not to fully disengage.

_______________________________________________
Tractors:
Li'l Red 89 Murray Widebody
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TheGreenMachine 89 Craftsman GT18
Bowser 01 Murray Widebody LT 
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Nevadablue
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PostSubject: Re: More Speed for Cub Cadet LT1040 CVT?   More Speed for Cub Cadet LT1040 CVT? - Page 2 Icon_minitimeWed Oct 20, 2021 4:45 pm

I have read LOTS of negative info about the variable pulley and it NOT working with anything but the stock belts and sizes. I can see that it could be made to work, but decided to avoid it myself. The stock belts are quite thick and ‘sticky’ it seems. Maybe like @mightyraze said, you need a thicker belt.
It seems that the ‘clutching’ action is not working since it moves without throttle movement.
Pictures?
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PostSubject: Re: More Speed for Cub Cadet LT1040 CVT?   More Speed for Cub Cadet LT1040 CVT? - Page 2 Icon_minitimeWed Oct 20, 2021 6:33 pm

@MightyRaze wrote:
The 5 Inch was put on the rear I am guessing.  Does the new belt have the same width and depth (V) as the old belt?  I know some of those had a shallower V in them.  Your new belt could be a little more "V'd" than the original allowing it to dig further into the varidive pulley causing it to actually slow a bit.  Also, it could be causing the drive belt to have a little more tension on it's side (not allowing it to separate the drive side) causing it not to fully disengage.

Yes the new 5 inch pulley replaced the rear 7.25 inch pulley.

Yes I replaced it original belt with a "Vd" shaped belt.
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PostSubject: Re: More Speed for Cub Cadet LT1040 CVT?   More Speed for Cub Cadet LT1040 CVT? - Page 2 Icon_minitimeWed Oct 20, 2021 6:35 pm

@Nevadablue wrote:
I have read LOTS of negative info about the variable pulley and it NOT working with anything but the stock belts and sizes. I can see that it could be made to work, but decided to avoid it myself. The stock belts are quite thick and ‘sticky’ it seems. Maybe like @mightyraze said, you need a thicker belt.
It seems that the ‘clutching’ action is not working since it moves without throttle movement.
Pictures?

Will get some images of the old and new belts for you fols to look at.

Thanks
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PostSubject: Re: More Speed for Cub Cadet LT1040 CVT?   More Speed for Cub Cadet LT1040 CVT? - Page 2 Icon_minitimeWed Oct 20, 2021 8:12 pm

I know exactly what you mean when you are talking about the creeping issue. There is a way to adjust the clutch on those. I would do that first and see if you can adjust the tension on the front belt that way. You'll want to make it a little bit looser to stop the creeping.
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More Speed for Cub Cadet LT1040 CVT? - Page 2 Empty
PostSubject: Re: More Speed for Cub Cadet LT1040 CVT?   More Speed for Cub Cadet LT1040 CVT? - Page 2 Icon_minitimeWed Oct 20, 2021 8:14 pm

I bet the new belt is wedging down in the varidrive pulley causing the drive side to be squeezed a bit.

_______________________________________________
Tractors:
Li'l Red 89 Murray Widebody
Kal-El 82 Murray GT -Retired-
TheGreenMachine 89 Craftsman GT18
Bowser 01 Murray Widebody LT 
Thor 77 Hydro Sears Suburban
Grandpa 75 Sears ST/16
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PostSubject: Re: More Speed for Cub Cadet LT1040 CVT?   More Speed for Cub Cadet LT1040 CVT? - Page 2 Icon_minitimeThu Oct 21, 2021 11:44 am

I appreciate the feedback from everyone! Here are images of the original belt along with several new belts for testing.

More Speed for Cub Cadet LT1040 CVT? - Page 2 Img_2010
More Speed for Cub Cadet LT1040 CVT? - Page 2 Img_2011
More Speed for Cub Cadet LT1040 CVT? - Page 2 Img_2012
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PostSubject: Re: More Speed for Cub Cadet LT1040 CVT?   More Speed for Cub Cadet LT1040 CVT? - Page 2 Icon_minitimeThu Oct 21, 2021 11:48 am

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PostSubject: Re: More Speed for Cub Cadet LT1040 CVT?   More Speed for Cub Cadet LT1040 CVT? - Page 2 Icon_minitimeThu Oct 21, 2021 1:12 pm

did you change front and rear belts? and both pullies or just one im confused
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PostSubject: Re: More Speed for Cub Cadet LT1040 CVT?   More Speed for Cub Cadet LT1040 CVT? - Page 2 Icon_minitimeThu Oct 21, 2021 1:15 pm

The new belts appear to be ‘A’ size. The old belt is noticeably wider. Your best bet, IMO, would be to find ‘B’ size belts.
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PostSubject: Re: More Speed for Cub Cadet LT1040 CVT?   More Speed for Cub Cadet LT1040 CVT? - Page 2 Icon_minitimeThu Oct 21, 2021 2:12 pm

@Budget_gokart wrote:
did you change front and rear belts? and both pullies or just one im confused

As per your instructions I took off the stock 7.25 inch rear pulley and replaced it with a 5 inch rear pulley, which also meant replacing the rear belt that is now connected to the new 5 inch pulley.
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