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Join Date: Apr 2005
Location: Minneapolis, MN, USA
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Bikes: 1990 Burley Bossa Nova, 1992 Paramount PDG-70, 1993 Specialized Stumpjumper, 2005 Jamis Dakar XC Pro, 2007 Rivendell Bleriot
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I may well be wrong on this, but I thought that 1 piece cranks used a larger diameter BB (and thus, BB shell)... might have trouble converting to three piece in that case.