I have a 07 rockhopper. All of the shifting worked okay but it all needed replaced. The bike has over 2k on it. So I thought single speed. Well, I cant get out to my LBS for a couple weeks so in the meantime heres what went down. I took the cables off the derailleur and it defaulted to 8th gear. way too low. so I made some adjustments and got it to default into 6th gear. then I took off the cassette and its an 8spd so the 7th and 8th gear independant. I put the 7th gear on first as a spacer then put the cassette on then put the 8th gear back on since it was what the lockring binded too. Now it defaults in 5th gear. I have shifter and brakes combined into 1 lever. I have extra brake levers but its almost dark and I will fiddle with that tomorrow. anyway moved the index to 1 and 8 then snipped the cables then put it in 3 and 1 so no cable was showing. then the front derailleur is trash so i got my long screw driver and snapped the cage so the chain could slip through. then i removed the 3rd chain chain ring and since I needed that ring as a spacer for the bolts to bite I replaced it with washers. Pics are comming really soon (10 min). its really funny. Now it defaults in the 5th ring which I didnt look to see what it was but its somewhere around 20 I would guess and the front 2nd chainring which is 32. 32 20(ish). Not bad. Im planning on buying a real single speed conversion as soon as I can get to my lbs.