Join Date: Apr 2009
Location: New Rochelle, NY
Bikes: too many bikes from 1967 10s (5x2)Frejus to a Sumitomo Ti/Chorus aluminum 10s (10x2), plus one non-susp mtn bike I use as my commuter
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First of all it's normal for cassettes to float, so put that out of your mind. Your problem is most likely that the distance from the cassette to the right dropout varies hub to hub. This is something that people who switch back and forth between different wheels are used to. You'll have to adjust the trim of the RD to match the new position. You do this using the adjusting barrel where the housing meets the RD.
Shift the lever to the position corresponding to either the second or third smallest sprocket, (not the smallest). Turn the adjuster while pedaling, until the RD completes the shift to the correct position. Then try shifting up and down, and fine tune until it shifts reliably in both directions.
An ounce of diagnosis is worth a pound of cure.
“Never argue with an idiot. He will only bring you down to his level and beat you with experience.”, George Carlin
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