Originally posted by Coaster
I'm upgrading an older road bike that came with a Shimano 600 non-indexed derailer. I've installed a 105 8 speed STI shifter and an 8 speed cassette. I've spoken to several bike mechanics and they said my derailer should work fine since the indexing is done at the shifter. Do I need a new derailer? Are there varying ratios for different derailers?
Rich
They are full of it. Deralier does have to be matched to the shifters.Your derailer is pre index,and has no clue what the shifters are telling it to do.You need a new derailer.Any Shimano index capable(sis) 7 or 8 speed other than pre 9 speed dura ace will work.Any 9 speed shimano will also work.I cannot beleive such people call themselves mechanics.
