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 How Do I measure a belt for pulley swaps

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MOWERMAN
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PostSubject: How Do I measure a belt for pulley swaps   How Do I measure a belt for pulley swaps Icon_minitimeWed Oct 13, 2021 12:43 pm

How Do I measure a belt for pulley swaps 20211016


How do I properly measure for belt size for a pulley swap?
How much play should I have with clutch disengaged?
I plan to step the trans pulley down to a 2" or so so I'll need a new belt, but the original swap which this pic is about a month after the swap being done, I had terrible slippage under load, even climbing hills, I really want this to work well

Thanks!
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MightyRaze
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PostSubject: Re: How Do I measure a belt for pulley swaps   How Do I measure a belt for pulley swaps Icon_minitimeWed Oct 13, 2021 1:57 pm

Belt should be tight enough that the clutch pulley should still have tension on it.  Should not flop.  As for measuring, you can take an old belt (larger) that is no good, cut it, run it through your pulleys and attach the ends where it is tight.  Take that to the store you buy belts. They should have a belt measurer there.  Another method is to use a piece of rope to do the same.

I've used the method Taryl uses in this video.  Fast forward to 41:31.

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MOWERMAN
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PostSubject: Re: How Do I measure a belt for pulley swaps   How Do I measure a belt for pulley swaps Icon_minitimeWed Oct 13, 2021 2:06 pm

I thought about using large zip ties but if I measure clutch engaged will it fully release when clutch is pressed? That was also a problem I had last time
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MightyRaze
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PostSubject: Re: How Do I measure a belt for pulley swaps   How Do I measure a belt for pulley swaps Icon_minitimeWed Oct 13, 2021 2:18 pm

I would measure when the clutch is released.  Also, I would think a zip tie would be too rigid for an accurate measure.

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Tractors:
Li'l Red 89 Murray Widebody
Kal-El 82 Murray GT -Retired-
TheGreenMachine 89 Craftsman GT18
Bowser 01 Murray Widebody LT 
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Grandpa 75 Sears ST/16
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MOWERMAN
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PostSubject: Re: How Do I measure a belt for pulley swaps   How Do I measure a belt for pulley swaps Icon_minitimeWed Oct 13, 2021 2:49 pm

Fair enough, I'll try that Thanks
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MOWERMAN
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PostSubject: Re: How Do I measure a belt for pulley swaps   How Do I measure a belt for pulley swaps Icon_minitimeWed Oct 13, 2021 2:51 pm

Do you mean released as in tension on belt or tension off belt
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TheJakeOfJake
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PostSubject: Re: How Do I measure a belt for pulley swaps   How Do I measure a belt for pulley swaps Icon_minitimeWed Oct 13, 2021 3:09 pm

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MOWERMAN
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MOWERMAN

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PostSubject: Re: How Do I measure a belt for pulley swaps   How Do I measure a belt for pulley swaps Icon_minitimeWed Oct 13, 2021 3:28 pm

Only 1 problem I don't know what the original belt size was
There wasn't a guide on the mower anywhere
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PostSubject: Re: How Do I measure a belt for pulley swaps   How Do I measure a belt for pulley swaps Icon_minitime

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