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Determining Belt and Pulley Sizes


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#1 drbish OFFLINE  

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Posted February 01, 2016 - 06:40 PM

This is out of a Briggs & Stratton Service Engine Sales Manual

 

You can get the belt size by the diameters of the two pulleys and the distance between the two

Attached File  Scan0002.pdf   487.7KB   99 downloads

  


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#2 chieffan ONLINE  

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Posted February 01, 2016 - 07:19 PM

Good information to have available.  Thanks for posting it.


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#3 CRFarnsworth ONLINE  

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Posted February 01, 2016 - 07:21 PM

Love it!!!     Got that copied and printed.   Thanks    :thumbs:    ​     Rick


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#4 Traill95 ONLINE  

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Posted February 01, 2016 - 07:23 PM

Love it!!!     Got that copied and printed.   Thanks    :thumbs:    ​     Rick

Ditto,,, I will put it on the shop computer.



#5 MFDAC OFFLINE  

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Posted February 01, 2016 - 09:07 PM

Download and copy done! Thanks!

 

DAC



#6 larrybl ONLINE  

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Posted February 01, 2016 - 10:23 PM

Thanks!



#7 Cub 1650 OFFLINE  

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Posted February 02, 2016 - 07:26 AM

Thanks for the Info.



#8 artbuc OFFLINE  

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Posted February 06, 2016 - 04:56 AM

This formula works for pulleys with equal diameters. I would do a little more trig to get a better number if the diameters were different.

#9 OldBuzzard ONLINE  

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Posted February 12, 2016 - 11:19 AM

How about a web page that helps find the length of a belt for you?  :D :D :D

 

http://www.jhf.com/h...e-v-belt-length


Edited by OldBuzzard, February 12, 2016 - 11:21 AM.

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#10 artbuc OFFLINE  

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Posted February 12, 2016 - 11:58 AM

How about a web page that helps find the length of a belt for you? :D :D :D

http://www.jhf.com/h...e-v-belt-length

Well done! I can put away my calculator now, lol. Correct answer is 56.41", not 56".

Edited by artbuc, February 12, 2016 - 12:01 PM.


#11 tater195 ONLINE  

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Posted February 12, 2016 - 03:51 PM

just in case you dont have internet handy...

 

(circumference of pulley A divided by 2) + (circumference of pulley B divided by 2) + (distance between shafts x2)

 

If you have idlers or a twisted belt, you just have to guess... or do a bunch of extra math... then guess



#12 artbuc OFFLINE  

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Posted February 13, 2016 - 05:27 AM

just in case you dont have internet handy...
 
(circumference of pulley A divided by 2) + (circumference of pulley B divided by 2) + (distance between shafts x2)
 
If you have idlers or a twisted belt, you just have to guess... or do a bunch of extra math... then guess


Same as presented by OP (pi/2 is about 1.6) except more difficult to measure circumference than diameter. Good approximation but inaccurate with different diameter pulleys.




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