timing belt pulleys: why is P.D. > O.D. ?

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pogo's Avatar (by Gravatar)pogo posted on
May 11, 2006, 1:26 am
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For timing belt pulleys, why is Pitch Diameter greater than Outside
Diameter ? I would think it would be the opposite of that.
( I have been looking on the McMaster-Carr and Stock Drive Products
sites. )

Thanks !



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Tim Auton's Avatar (by Gravatar)Tim Auton posted on
May 11, 2006, 12:35 pm
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Re: timing belt pulleys: why is P.D. > O.D. ?



The belt sticks out beyond the OD of the pulley.


Tim
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pogo's Avatar (by Gravatar)pogo posted on
May 11, 2006, 7:49 pm
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Re: timing belt pulleys: why is P.D. > O.D. ?


Thanks! *Now* it makes sense!
JCD



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