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View Full Version : Rear Derailleur Tune


bikeforlife
04-18-2006, 10:15 PM
Since there is finally a proper place to put this i figured I'd put it up.
I think this is a good tip for all sorts of levels of wrenches as it can speed up a tune for an accomplished wrench and at the same time make that little guy back there a little less scary for a beginner. Also it very important to have a properly tuned rear derailleur for a good ride.

Shift to the big chainring/big cog, then loosen the rear derailleur's cable clamp. Set the inner limit by looking at the derailleur from the rear, lightly pushing the derailleur toward the spokes, be sure the derailleur pulleys line up directly underneath the largest cog and that the rear derailleur cannot contact the spokes.
With the cable still unattached, pedal the bike in the workstand, it should shift to the smallest cog/largest chainring combo. The pulleys should line up directly beneath the smallest cog. If not, adjust the outer-limit screw. Then turn the barrel adjuster in completely, then back it out one full turn and reattach the cable to the derailleur, pulling it tight to remove all slack.
While pedaling the bike, click up one cog. If the chain moves to the next cog but hesitates or clatters, turn the barrel adjuster out (counterclockwise) one quarter turn. Shift back down, then shift up again and try another quarter-turn. Repeat until the shift is smooth. Go ride.