Down shifting problem
#1
Cycle Dallas
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Join Date: Jun 2005
Location: Land of Gar, TX
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Down shifting problem
Hi all,
I just finished installing thumb shifters,(top mount), on my old skool, 6 x 2 Raleigh. The shifters are Shimano SIS indexed 6 and friction 3. My derailer is a Shimano SIS. Shifting from H to L and vise versa on the front works fine. Shifting up to higher gears on the back has no issues. The problem is in shifting the back into lower gears:
6 to 5 - Works fine
5 to 4 - I have to shift slightly past 4 and after it shifts, let the shifter fall back to the #4 detent
4 to 3 - I have to shift all the way to the #2 detent. I can then move back and forth between #2 & #3 and it stays on gear #3.
3 to 2 - See the last shift
2 to 1 - Skips gear 2 and goes straight to 1.
Could turning the adjustment screws make a difference? If so, do I use the H or L screw and which way should I turn it?
Thanks everyone.
I just finished installing thumb shifters,(top mount), on my old skool, 6 x 2 Raleigh. The shifters are Shimano SIS indexed 6 and friction 3. My derailer is a Shimano SIS. Shifting from H to L and vise versa on the front works fine. Shifting up to higher gears on the back has no issues. The problem is in shifting the back into lower gears:
6 to 5 - Works fine
5 to 4 - I have to shift slightly past 4 and after it shifts, let the shifter fall back to the #4 detent
4 to 3 - I have to shift all the way to the #2 detent. I can then move back and forth between #2 & #3 and it stays on gear #3.
3 to 2 - See the last shift
2 to 1 - Skips gear 2 and goes straight to 1.
Could turning the adjustment screws make a difference? If so, do I use the H or L screw and which way should I turn it?
Thanks everyone.
#2
Senior Member
Try upping the tension on the cable a little bit. Turn the barrel by the deralleur counter-clockwise.
The limit screws only affect shifting into the topmost and bottommost gears. If it's doing that, no reason to play with them. Sounds like a cable tension issue. Also, how is the routing for the cables? Smoooth?
The limit screws only affect shifting into the topmost and bottommost gears. If it's doing that, no reason to play with them. Sounds like a cable tension issue. Also, how is the routing for the cables? Smoooth?
#3
Cycle Dallas
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I slightly tightened the cable and then adjusted the barrel until everything fell into place. Thanks for the help!