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Old 01-29-10 | 05:11 AM
  #23  
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BCRider
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Joined: Mar 2008
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From: The 'Wack, BC, Canada

Bikes: Norco (2), Miyata, Canondale, Soma, Redline

Originally Posted by 2_i
Under my conditions, I'd be swapping sealed BB bearings once a year with this kind of slots

Not really, even with those vacuous openings the seals themselves would only see the same end exposure that they would with a non ventilated BB shell.
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