Advice needed - compatibility of shimano - triple to compact
Archive #33168150
I'm getting a new frame and was going to swap all my components from my current bike which has 105 shifters and derealieurs, tiagra cassette and some shimano triple chainring.
Decided I wanted to change to ultegra chainring and cassette but shop has told me that the 105 shifters and derealieurs I have, being from a triple, will not work. I thought I'd read that the 105 stuff was all the same, it's just set up for whatever - triple or compact?
Ideally I'd like to go 11 speed at the back too, but if I can only have 10 that's fine.
To replace the cassette and chainring would cost about £170. Shop saying that really I would have to swap the whole lot - an ultegra chainset with shifters, derailleurs and brakes and everything is about £450 though!
What's the best way forward?
Can a mod turn this in to a post from a wiki?
Not sure why this wants to be a wiki?
You can do it with the bits you have, but;
You might need to adjust the spacers on the bottom bracket a bit to get the chain line correct.
The front derailleur will need the shift screws adjusting to suit the new crank, for the price I'd get a double derailleur, they aren't that expensive.
The front gear cable will want the slack taking out of it, and possibly shortening a little.
The shifter will need setting up so the chain moves from the little to the big on the first shift position, the second shift position will not be used as the front derailleur upper limit screw should prevent the cable moving far enough.
The chain length should be ok as long as the two largest sprockets haven't increased in size, but if you are replacing the drivetrain, just make the chain as long as you need.
Decided I wanted to change to ultegra chainring and cassette but shop has told me that the 105 shifters and derealieurs I have, being from a triple, will not work. I thought I'd read that the 105 stuff was all the same, it's just set up for whatever - triple or compact?
Ideally I'd like to go 11 speed at the back too, but if I can only have 10 that's fine.
To replace the cassette and chainring would cost about £170. Shop saying that really I would have to swap the whole lot - an ultegra chainset with shifters, derailleurs and brakes and everything is about £450 though!
What's the best way forward?
Can a mod turn this in to a post from a wiki?
Not sure why this wants to be a wiki?
You can do it with the bits you have, but;
You might need to adjust the spacers on the bottom bracket a bit to get the chain line correct.
The front derailleur will need the shift screws adjusting to suit the new crank, for the price I'd get a double derailleur, they aren't that expensive.
The front gear cable will want the slack taking out of it, and possibly shortening a little.
The shifter will need setting up so the chain moves from the little to the big on the first shift position, the second shift position will not be used as the front derailleur upper limit screw should prevent the cable moving far enough.
The chain length should be ok as long as the two largest sprockets haven't increased in size, but if you are replacing the drivetrain, just make the chain as long as you need.