Originally Posted by mik27rc1
ok, sorted the middle chainring, old nick was right, i did back off and it went in ok, still cant get in to the largest ring on the back cassette, only thing i havent done is fiddle with the cable, maybe thats it.
i noticed today that when the gripshift says i'm on the no.2 on the back cassette it will be on 3 ring and so on, always seems the back cassette is ahead of the grip shoft, any ideas?
Your shift cable tension is probably not right. Try this:
1. Shift into your smallest cog in the back. Make sure your shifter says "7" or whatever your biggest number is.
2. Take up any cable slack until the cable is just taut.
3. Shift one notch and see what happens. If it doesn't shift onto the next cog, unscrew the barrel adjuster where the cable enters the derailleur 1/4 turn. Repeat until it works.
4. Shift once more to the next cog, fiddle with the cable tension if necessary, etc. untill you get to the biggest cog.