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
Mentioned: 6 Post(s)
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OK, start with a basic process of elimination. Remove or slacken the cable, and see if you can get the RD to move by pushing the lower body in while pedaling. If so, and if with the cable off, the RD can be pushed in and springs back, then it's OK.
OTOH - if you cannot move the RD by pushing the lower body in, then you need to look within it for why. Possibly a prior owner brought the limits in against each t er to lock it in position, or possibly the pivots are corroded and bound.
Either way, the detective process starts with narrowing the list of suspects to a few, then checking them out one by one.
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
“One accurate measurement is worth a thousand expert opinions”
- Adm Grace Murray Hopper - USN
WARNING, I'm from New York. Thin skinned people should maintain safe distance