Join Date: Mar 2009
Bikes: 1981 Sekai 1500 Mixte, 1974 Schwinn Le Tour Mixte, 1984 Peugeot Mixte, 1975 Gitane Grand Sport Deluxe Mixte, Motobecane Nomade II Mixte, 2001 Trek 520, 1974 Peugeot UO-18 Mixte
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is that a isis, octalink or square taper bottom bracket? I can't tell from the picture. Although, usually when the crank is stripped, the bottom bracket interface is too. Especially square tapers. It comes from repeatedly tightening the crank too hard, removing it and then tightening too hard again.