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Wont shift from 2nd to 3rd while on the bike.

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Wont shift from 2nd to 3rd while on the bike.

Old 09-01-11, 09:31 AM
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Wont shift from 2nd to 3rd while on the bike.

So like the title says, I cannot shift from the middle to the largest chain ring while actually on the bike. I have had the shop adjust it, I have adjusted it, still no success. It shifts fine when on the stand or when the shop mech rides it, he is a bit smaller than me though and thinks my weight advantage over him is to blame. Im 6'2 200lbs. The bike is Fuji Newest 3.0 with shimano 2303 shifters and front derailleur. Any ideas or tips on adjustments would be appreciated.
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Old 09-01-11, 12:12 PM
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It sound to me like a chain tension issue or there may be too much friction between the shifter housing and cable.
Does any part of your body come in contact with the shifter cable?
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Old 09-01-11, 12:45 PM
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With front ders. looking at the bike is key.... but it sounds like a basic cable tension issue based on your description. Take the bike back, have them readjust the der, and then ride it in the parking lot for awhile checking the shifting. If it doesn't work tell them they did an incompetent job and have them fix it correctly.

edit I have no idea what the hell deadend is getting at??? hit the ignore button on that guy
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Old 09-01-11, 01:28 PM
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There aren't too many things that can be involved. It may be that the Hi stop is not set properly and the bike mechanic is pushing the shift lever hard enough to force it into place and you aren't. If the Hi stop is detuned so it is not involved and the cable tension is increased it will shift. Period. That assumes the cables are in good repair and the end caps are seated properly which should be a done deal if a bike mechanic has checked it. You may be flexing the bike a bit more but that shouldn't be a factor. Another thing to always check with front derailleurs is the derailleur position. It should just clear the larger chain and should be parallel to chain rings. Many front derailleurs are set too high but even that shouldn't cause the symptoms you are describing...but it's worth looking at. Beyond that all I can think of is Hi stop and cable tension. I'd detune the Hi stop, detune the cable tension screws, unscrew the cable and pull it taut (with the lever set to the inner ring). Tighten the cable and then reset the Hi stop and adjust the cable tension carefully. From the top of my head I think that's about all that's involved...assuming the cables are properly seated.
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