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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Pulleys have very little rotational inertia and so it takes very little (very, very, very little) friction to have them seem like they don't spin. If they're old, you might clean and oil them, but otherwise seal drag will have them acting sluggish. (compare throwing a baseball and wiffle ball, into a high wind, which goes farther).
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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WARNING, I'm from New York. Thin skinned people should maintain safe distance