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sti shifter problem(7 posts)

sti shifter problembrooklyn
Dec 14, 2002 10:15 PM
i bought a used set of ultegra sti shifters and was planning to use them with a old xt rear derailleur for a commting bike. the problem is that they will not shift? when i shift the derailluer moves just one cog. could it be the shifters or am i doing something wrong on the install. all i have worked on is mtb bikes so i need some advice
Clarify your problem. nmfeathers mcgraw
Dec 14, 2002 10:25 PM
re: sti shifter problemseyboro
Dec 15, 2002 4:16 AM
Did you shift up all the way before installing the derailleur?
Let me try to clarify...Lone Gunman
Dec 15, 2002 4:28 PM
The shifter works like a ratchet, each click tightens the cable enough to pull the derailleur the distance needed to shift one cog. Therefore BEFORE fixing the cable, you got to shift the levers all the way down to the starting position, shift the thing about 12 times until you hear no more clicks, that should be the start point to fix the cable to the derail fix bolt. Then to adjust the derail, shift to the second cog and hand crank and turn the barrel adjuster until the noise stops, should be set.
Let me try to clarify...brooklyn
Dec 15, 2002 6:44 PM
this may sound like a newbie question but which lever upshifts and which one downshifts.(the smaller lever or the larger) i am going to be away so i cant wrench my bike until next weekend.
what lever does whatbenja15
Dec 15, 2002 8:05 PM
the little black lever lets out cable- shifing to a smaller gear
moving the whole lever pulls cable shifting to a bigger gear
this is the same for the front and rear derailers

make sure you let all the cable out of the rear derailer by clicking the little black lever untill it stops and then clamp the cable in the rear derailer when it is in the lowest position
On Shimano Ultegra it is the inside lever, the smaller of the 2Lone Gunman
Dec 16, 2002 5:31 PM
While you are at it, take a look at the under side of the smaller, inside lever. Locate the screw that appears to mate the inside and larger outside lever. Be certain that that screw is tight. Seriously consider removing it and applying some blue loctite to the threads. Don't worry, taking that screw out will not allow anything to self destruct, losing it on a ride because you did not know about it probably make your shifters malfunction. This screw is a 5mm? I think, mine and several others have rattled loose and/or fallen out. Preventive maintenance is what this is. Both sides have this screw, it is near the area of the lever where the body of the hood and the lever come together, the only screw in this location.