Senior Member
Join Date: May 2008
Location: Fredericksburg, Va
Posts: 9,587
Bikes: '65 Frejus TDF, '73 Bottecchia Giro d'Italia, '83 Colnago Superissimo, '84 Trek 610, '84 Trek 760, '88 Pinarello Veneto, '88 De Rosa Pro, '89 Pinarello Montello, '94 Burley Duet, 97 Specialized RockHopper, 2010 Langster, Tern Link D8
Mentioned: 73 Post(s)
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Quoted: 1616 Post(s)
Usually for me it is rider malfunction! Not tightening the stem or handlebar or brake levers or pillar enough after servicing and before a ride.
There was a malfunction of a 7200 FD while on a ride where it would not shift into the large ring. I don't remember the details as it was too long ago. I think it had to do with the little fiber part that the limit screws go through. Some how I fixed it and I haven't had a problem with it since, especially with it being in a box as a result of converting to Campagnolo drive train.
Flats don't count in my book, except when a valve fails.
Then there are car driver malfunctions resulting in bodily harm to me.
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Bikes don't stand alone. They are two tired.