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Halloween Special - Strange 105 Shifting(9 posts)

Halloween Special - Strange 105 ShiftingSep
Oct 30, 2003 1:45 PM
I have 105 shifters on my triple crankset bike. I am unable to get into my big ring or out of it when I finally get there. The strange part is that it all shifts perfectly on the workstand! I have triple checked the hi-limit settings....

When I'm "stuck" in the big ring, the front derailluer doesn't respond at all to the "drop" or smaller gear change lever - it's as if something is jammed in the shifter. However, when I put it in the stand - every thing is great....

I guess the up-shift is failing under load (or my bike needs to be exorcised). I'm not sure what the cause would be (worn shifter?).

Any thoughts or suggestions will be greatly appreciated!

Thanks
they are posessed...call a priest (nm)ColnagoFE
Oct 30, 2003 1:59 PM
As the whole headset spins round and round....lotterypick
Oct 30, 2003 2:26 PM
spewing up road grime (yuck), rust globs (ick) and dead bug particles.....right when you look down the assembly.
the power or eddy compels you...the power of eddy....(nm)ColnagoFE
Oct 30, 2003 3:51 PM
LOL!!! nmJS Haiku Shop
Oct 31, 2003 7:00 AM
Any chance the derailleur cage touches the chain ring?Kerry Irons
Oct 30, 2003 4:42 PM
If the outer or inner part of the cage just barely touches the big chain ring, it can really goof up your shifting but be hard to see. The little bit of flex induced by pedaling could cause this and it wouldn't appear on the work stand.
Maybe I need a magic eight-ball....Sep
Oct 31, 2003 8:53 AM
While riding, I tried to upshift from the middle ring to the big ring - when it "stuck" (i.e the brake lever would move no further to the right and the smaller "downshift" lever wouldn't "drop" the derailluer back into the indexed middle ring position - but it was not in the big ring) I stopped and checked to see if it was touching anywhere - I couldn't see any point of contact.

Thanks for the suggestion....It's still a mystery
Try a new cable - inner first, then outer if that doesn't work.BowWow
Nov 2, 2003 12:23 AM
Also, check very carefully under the BB - Sheldon Brown recommends cleaning and lubing the cable guide. Calls it "magic..."! Hmmm...
Try a new cable - inner first, then outer if that doesn't work.import silvia
Nov 3, 2003 8:18 AM
Huh, my down tube shifters never have problems like that and, they are really flexible, I have a 9 speed rear cog on my system originally desgined for just 7 speeds. I would even be willing to bet that I could put a 10 speed rear cog on and have it work just fine. Since I'm not a racer that extra second to shift doesn't really affect me.