I'm changing one of my bikes from a triple to a double as I don't need the 3rd chain ring, and was wondering if I simply take off the smallest chain ring will the chainset still work with new double shifters and derailleur?
Yeah but a friend gave me his old ultegra 6600 shifters and derailleurs as he just upgraded to DA so I wanted to use these instead of my rubbish tiagra!
The chainset will work OK but the chain line will not be right. If you have a Tiagra HT2 chainset you may be able to correct this by removing the 6.5mm spacer from behind the RH crank. You may need to fit it to the LH side if the axle is now too long. If you have a square taper or Octalink BB then you will need a shorter one.
I`d buy a new Tiagra double chainset (a compact (50/39) if you`re coming off a triple) and then you`ll be well set up, and it`ll all work fine, cost about 55 quid for the chainset and new BB to suit (try Ribble for best price) Like John T said, there is a large plastic spacer behind the triple chainset on the drive-side, which will be throwing out the chainline, if you swap it to the other side then it`ll throw that side crank outwards by quite a bit, which will make it feel a bit weird when pedalling (I did exactly this on a training bike chainset, swapped it back afterwards as it didn`t "feel" right)
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Specialized S-Works SaxoBank SL4 Tarmac Di2
I`d buy a new Tiagra double chainset (a compact (50/39) if you`re coming off a triple) and then you`ll be well set up, and it`ll all work fine, cost about 55 quid for the chainset and new BB to suit (try Ribble for best price) Like John T said, there is a large plastic spacer behind the triple chainset on the drive-side, which will be throwing out the chainline, if you swap it to the other side then it`ll throw that side crank outwards by quite a bit, which will make it feel a bit weird when pedalling (I did exactly this on a training bike chainset, swapped it back afterwards as it didn`t "feel" right)
Specialized S-Works SaxoBank SL4 Tarmac Di2