Join Date: Jun 2005
Location: Land of Gar, TX
Bikes: Lucinda--2010 Jamis Aurora Elite & a few others
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Down shifting problem
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?