14-12-2008, 10:25
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Registered User
no team (Synergy)
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Join Date: Jan 2003
Rookie Year: 2001
Location: Midlothian, VA
Posts: 679
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Re: chain wrap
From Diamond Chain: http://www.diamondchain.com/support/techfaqs.php
What is the recommended minimum chain wrap in a roller chain drive?
ANSWER: The recommended minimum wrap angle of the smallest sprocket in the drive is 120°. The wrap angle can be reduced to 90°, if good chain tension adjustment is maintained. If chain tension is not closely maintained with less than 120° wrap, the chain can jump teeth, resulting in damage to the chain and/or the sprocket.
Note: For a sprocket ratio of 3:1 or less there will always be 120°or more wrap on the small sprocket, regardless of the center distance.
__________________
Richard Linn
Proud father of Marine LCpl. Karl R. Linn
Co-founder Team 975
KIA, Iraq 1/26/2005
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