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Old 02-22-10 | 10:31 AM
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AEO
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Joined: Jun 2007
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From: A Coffin Called Earth. or Toronto, ON

Bikes: Bianchi, Miyata, Dahon, Rossin

the chain should move vertically by about 1cm if it's properly tensioned.
if it's too tight it won't budge at all.

also there will be a tight and loose spot depending on the position of the cranks because the chainrings aren't perfectly round.
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