Join Date: Apr 2007
Location: Syracuse, NY
Bikes: 2008 Novara Randonee - love it. Would have more bikes if I had time to ride them all. Previous bikes: 1968 Motobecane Mirage, 1972 Moto Grand Jubilee (my fav), Jackson Rake 16, 1983 C'dale ST500.
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Trying to diagnose here when we can't hear or feel it will be very difficult. The mechanic (pref head mechanic as you've had to take it back repeatedly) should take it for a test ride. It's nonsense to avoid that after the 2nd time in, as it saves more shop time and customer grief in the long run. They should also tighten cranks, pedals, chainwheel bolts, etc to spec. Finally have them explain to you the gear combinations to avoid (primarily cross chain and esp small front to small rear).
You could in addition also have a knowledgeable cyclist ride with you to point out the finer points of using and shifting gears.
Last edited by cny-bikeman; 09-13-10 at 08:15 PM.