J
8-speed cassette, no front derailleur
SRAM MRX Comp Grip Shift
Rear derailleur, chain and chain ring, clean and lubed
All components relatively new (11 months or less) - chain 1 month old
- 300 road miles per month (daily commuting in Chicago, all weather)
I am having a little trouble with my rear derailleur. I am hoping that
someone can take a minute to help me understand what is going on. I am
new to bike repair/maintenance, so don't assume that I know anything
at all. My goal is to learn more about repair/maintenance, so I can
eventually do most stuff myself, except for headsets.
My rear derailleur would not always shift properly when going anywhere
from 6 to 3 (one gear at a time). I had to go too far and then come
back; this workaround always worked fine. I could always upshift (1 to
8) perfectly. Could always shift between 7-8 and 1-2 fine, in either
direction. I visually compared this cassette with a brand new
cassette, and could not see any obvious wear difference between the
two.
My solution (which I blindly stumbled on in desperation) was to turn
the barrel shifter on the gear shift several turns counter-clockwise.
So I have two questions:
1. My understanding is, tuning the barrel shifter on the changer
changes the 'indexing' of the shifter, which essentially changes how
much the derailleur moves between cogs. Is this correct?
2. Also, is this the correct way to solve this problem?
TIA - J.
SRAM MRX Comp Grip Shift
Rear derailleur, chain and chain ring, clean and lubed
All components relatively new (11 months or less) - chain 1 month old
- 300 road miles per month (daily commuting in Chicago, all weather)
I am having a little trouble with my rear derailleur. I am hoping that
someone can take a minute to help me understand what is going on. I am
new to bike repair/maintenance, so don't assume that I know anything
at all. My goal is to learn more about repair/maintenance, so I can
eventually do most stuff myself, except for headsets.
My rear derailleur would not always shift properly when going anywhere
from 6 to 3 (one gear at a time). I had to go too far and then come
back; this workaround always worked fine. I could always upshift (1 to
8) perfectly. Could always shift between 7-8 and 1-2 fine, in either
direction. I visually compared this cassette with a brand new
cassette, and could not see any obvious wear difference between the
two.
My solution (which I blindly stumbled on in desperation) was to turn
the barrel shifter on the gear shift several turns counter-clockwise.
So I have two questions:
1. My understanding is, tuning the barrel shifter on the changer
changes the 'indexing' of the shifter, which essentially changes how
much the derailleur moves between cogs. Is this correct?
2. Also, is this the correct way to solve this problem?
TIA - J.