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Old 11-08-12, 01:01 PM
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Join Date: Apr 2009
Location: New Rochelle, NY
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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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You have a friction problem. The slack at the lever end indicates that it's wither in the cable or the caliper itself. Start by flexing the caliper closed with your hand letting the cable go slack and slowly releasing and watching and feeling to see if the caliper fully springs back firmly, and with constant spring pressure. If not, try oiling the pivots, and the places where the springs meet the arms.

If the caliper is OK, tie it closed to the rim with a toe strap or piece of string, and work the housing back and forth on the now slackened cable to feel for smoothness or friction. Often friction happens even with new cables if the lead in at the lever isn't straight or you used the wrong ferrule. In some cases I've seen cables that were OK until taped down then binding because of poor lever lead-in.
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