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#1
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I have an Ultegra (52-42-30; 12-25 9 speed) with what should be an easy fix. Although I've worked on my "cheapie" mt bike, I do not want to incorrectly adjust the road bike and screw something up! Bike sat downstairs for three months, no riding (winter) then took it out today (winter gear arrived Friday!) Lubed pivots, chain etc. before my ride. Here are the symptoms: on large chainring, small cog the chain slaps the outside of the front der cage. I've tried to trim the front der with very limited success. I turned the front der cable adjust CCW/anti-clockwise until the slap went away. At that point the front der wouldn't hold the shift from med to large ring. So, I moved the front der adjust CW smidge by smidge so it would shift from med to large. Of course, now the chain hits the outside of the cage on large ring-small cog combo, same as before. Grrr! Based on the symptoms, should I be able to adjust the cable, using much smaller turns or will I have to adjust the throw of the front der cage? If I have to adjust the front der, which screw (nearest/farthest from the frame) adjusts the high cog (Ultegra)? I'd like to properly learn to tune it myself. Thanks for your patience. Tom |
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#2
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"Tom Scanlin" <magiclightpixNO.SPAM.@NO.SPAM.hotmail.com> wrote in message news:jt6dnTmjJJjTOs7dRVn-sA@comcast.com... > I have an Ultegra (52-42-30; 12-25 9 speed) with what > should be an easy fix. > Although I've worked on my "cheapie" mt bike, I do not > want to incorrectly adjust the road bike and screw > something up! <snip> > Based on the symptoms, should I be able to adjust the > cable, using much smaller turns or will I have to adjust > the throw of the front der cage? Don't bother trying to do anything with the barrel adjusting screw (cable adjuster), other than turning it to its original position. > If I have to adjust the front der, which screw > (nearest/farthest from the frame) adjusts the high cog > (Ultegra)? With the chain is touching the derailer cage (large ring, small cog), try turning the outer (farthest from frame) front der limiting screw CCW one-half turn. You want to see the derailer cage 1-2 mm away from the chain. If one- half doesn't do it, add a half-turn. You may clear it with only a quarter turn too though. You can see the cage move as you do this. Jim |
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#3
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"Tom Scanlin" <magiclightpixNO.SPAM.@NO.SPAM.hotmail.com> wrote in message news:jt6dnTmjJJjTOs7dRVn-sA@comcast.com... > I have an Ultegra (52-42-30; 12-25 9 speed) with what > should be an easy fix. > Although I've worked on my "cheapie" mt bike, I do not > want to incorrectly adjust the road bike and screw > something up! > > Bike sat downstairs for three months, no riding (winter) > then took it out today (winter gear arrived Friday!) > > Lubed pivots, chain etc. before my ride. > > Here are the symptoms: on large chainring, small cog the > chain slaps the outside of the front der cage. I've tried > to trim the front der with very limited success. I turned > the front der cable adjust CCW/anti-clockwise until the > slap went away. At that point the front der wouldn't hold > the shift from med to large ring. So, I moved the front > der adjust CW smidge by > smidge so it would shift from med to large. Of course, now > the chain hits the outside of the cage on large ring-small > cog combo, same as before. Grrr! > > Based on the symptoms, should I be able to adjust the > cable, using much smaller turns or will I have to adjust > the throw of the front der cage? > > If I have to adjust the front der, which screw > (nearest/farthest from the frame) adjusts the high cog > (Ultegra)? > > I'd like to properly learn to tune it myself. > > Thanks for your patience. Tom > > Park Tools has probably the best instructions on how to set up your derailluers: http://www.parktool.com/repair_h- elp/howfix_frontderailleur.shtml Remember that one adjustment affects the others, so follow the instructions in order given. |
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#4
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Jim: Thanks for the help. I'll give it a shot tomorrow PM! Tom "Jim Flom" <jimflom@telusREMOVE.net> wrote in message news:63O4c.167859$A12.133188@edtnps84... > "Tom Scanlin" <magiclightpixNO.SPAM.@NO.SPAM.hotmail.com> > wrote in message news:jt6dnTmjJJjTOs7dRVn- > sA@comcast.com... > > I have an Ultegra (52-42-30; 12-25 9 speed) with what > > should be an easy > fix. > > Although I've worked on my "cheapie" mt bike, I do not > > want to incorrectly > > adjust the road bike and screw something up! > > <snip> > > > Based on the symptoms, should I be able to adjust the > > cable, using much smaller turns or will I have to adjust > > the throw of the front der cage? > > Don't bother trying to do anything with the barrel > adjusting screw (cable adjuster), other than turning it to > its original position. > > > If I have to adjust the front der, which screw > > (nearest/farthest from the > > frame) adjusts the high cog (Ultegra)? > > With the chain is touching the derailer cage (large ring, > small cog), try turning the outer (farthest from frame) > front der limiting screw CCW one-half turn. You want to > see the derailer cage 1-2 mm away from the chain. If one- > half doesn't do it, add a half-turn. You may clear it with > only a quarter turn too though. You can see the cage move > as you do this. > > Jim |
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#5
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How to adjust your Ultegra Triple front derailer... The Park Tool way: http://tinyurl.com/2kaes The Sheldon Brown way: http://tinyurl.com/34l59 The Shimano way: http://tinyurl.com/24quc
__________________ David Ornee, Western Springs, IL USA |
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#6
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Here's a trick to determine which screw to turn, and which direction to turn it to adjust the FD cage, before you've messed up the setting too badly.... Place a finger in between the the cage and the crank. You can use touch to detect cage movement quite easily. If one screw does not do anything within a quarter turn, try the other screw. I need to feel the movement because I so seldom adjust the cage I easily forget how. r.b. |
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