Pulley belt question

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jdh
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Pulley belt question

Postby jdh » Sat Feb 20, 2021 2:29 am

Evening, gents. I have a Dearborn cordwood saw for my Ford 8N that I restored over the summer, located a PTO pulley, now is the time to get a belt made, so my question is this, for the length of the belt, do I just measure outside of pulley to outside of pulley then double it? Is it that simple or should I take anything else into consideration? I just want to make sure I do it properly. Also would love to hear some recommendations on where a good place to buy a belt might be, I’m thinking one with alligator lacing, but if people here that know better I’d love some advice. Thanks all!

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Bill V in Md
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Re: Pulley belt question

Postby Bill V in Md » Sat Feb 20, 2021 8:28 am

You need to know the center to center distance between the pulleys and the pulley diameters. If the pulleys are the same diameter, the belt length = (2 x Center to Center Distance) + Pulley Circumference. The pulley circumference in this calculation is for one pulley only. If the pulleys have different diameters, just add the circumference for both pulleys and divide by 2. This number is then used for pulley circumference in the above equation.
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Re: Pulley belt question

Postby tst » Sat Feb 20, 2021 9:35 am

bought many from this link, nice to work with
https://albinoindustrialbelting.com/

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Re: Pulley belt question

Postby jdh » Sat Feb 20, 2021 11:34 am

Thanks guys!

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Re: Pulley belt question

Postby outdoors4evr » Mon Feb 22, 2021 9:51 am

Probably easier to stretch a rope around the pulleys (where you expect the flat belt to run), then measure the length of the rope.
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Re: Pulley belt question

Postby Urbish » Mon Feb 22, 2021 4:04 pm

outdoors4evr wrote:Probably easier to stretch a rope around the pulleys (where you expect the flat belt to run), then measure the length of the rope.


Came here to say this
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Re: Pulley belt question

Postby jdh » Mon Feb 22, 2021 6:27 pm

This is one of those moments you think, "That's so simple and stupid, why didn't I think of that''......

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Re: Pulley belt question

Postby SamsFarm » Wed Feb 24, 2021 8:53 am

Hmmmm....

What is wrong with wrapping a tape measure around the pulleys the same way that the belt goes to get your belt length?

A flat type tape would be best, like a seamstress tape (if the distance is short) or a reel type tape measure (like a 50 or 100 footer)!

Is this saw a mounted saw?
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Re: Pulley belt question

Postby SONNY » Wed Feb 24, 2021 11:15 am

I just run a tape around the whole thing and measure the total length----WAY simpler! lol!

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Re: Pulley belt question

Postby jdh » Fri Feb 26, 2021 5:01 am

Sam, its a Dearborn 22-44 cordwood buzzsaw.

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Re: Pulley belt question

Postby Jim Becker » Fri Feb 26, 2021 11:41 am

Check your direction of rotation. You are likely to need a half twist in the belt. You may need to allow a little for that.

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Re: Pulley belt question

Postby tst » Fri Feb 26, 2021 11:59 am

If you were not aware the by putting the twist in the belt prevents it from coming off

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Re: Pulley belt question

Postby jdh » Fri Feb 26, 2021 2:27 pm

I was NOT aware, thanks gentleman

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Re: Pulley belt question

Postby Dusty B » Mon Mar 01, 2021 3:09 pm

tst wrote:If you were not aware the by putting the twist in the belt prevents it from coming off

reverses direction of rotation when necessary!
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