Shimano 105 missing downshifts.
09-05-06, 12:05 PM
#1
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Shimano 105 missing downshifts.
I have 9 spd 105, and occassionally, when I go to down shift, usually onto the biggest cogs, the lever moves with absolutely no resistance, and of course, no shift. I let it return and shift again and it works. I cleaned it out with solvent and haven't been able to check it yet, but if its not fixed, any ideas?
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Il faut de l'audace, encore de l'audace, toujours de l'audace
1980 3Rensho-- 1975 Raleigh Sprite 3spd
1990s Raleigh M20 MTB--2007 Windsor Hour (track)
1988 Ducati 750 F1
09-05-06, 12:30 PM
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I would flush out the shifters really well with WD40. New shift cables and housings may also be needed. You could try lubricating the cable where it runs through the short housing just before the rear derailleur. Often this will improve shifting.
Al
Al
09-05-06, 01:57 PM
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Sometimes they get gooked up and will miss shifts like that. I have used carb cleaner (spray can variety) w/ a lot of success. Spray in, let sit a few mins, wipe off excess and shift away good as new. Spray triflow will also sometimes work.
09-05-06, 02:09 PM
#4
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Originally Posted by fixed.rider
Sometimes they get gooked up and will miss shifts like that. I have used carb cleaner (spray can variety) w/ a lot of success. Spray in, let sit a few mins, wipe off excess and shift away good as new. Spray triflow will also sometimes work.
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Il faut de l'audace, encore de l'audace, toujours de l'audace
1980 3Rensho-- 1975 Raleigh Sprite 3spd
1990s Raleigh M20 MTB--2007 Windsor Hour (track)
1988 Ducati 750 F1
Il faut de l'audace, encore de l'audace, toujours de l'audace
1980 3Rensho-- 1975 Raleigh Sprite 3spd
1990s Raleigh M20 MTB--2007 Windsor Hour (track)
1988 Ducati 750 F1
09-05-06, 06:49 PM
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Check where the cable runs under the bottom bracket, this spot is a catch-all for crap.
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09-05-06, 09:03 PM
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Originally Posted by Al1943
I would flush out the shifters really well with WD40. New shift cables and housings may also be needed. You could try lubricating the cable where it runs through the short housing just before the rear derailleur. Often this will improve shifting.
Al
Al
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