Hi,
I have just bought a new bike that comes with a Shimano 105 5700 39 x 53 chainset. I would like to fit a 50t outer chainring and have found one [url= http://www.sjscycles.co.uk/shimano-105-fc-5703-s-130mm-pcd-5-arm-outer-chainring-d-type-silver-50t-prod27655/ ]here[/url] but it is listed for a triple chainset rather than a double, which is what I have.
Does anyone know what the difference is and if it is compatible?
Thanks very much!
It will fit onto your cranks but it may not shift perfectly.
I see, do you know why that would be?
Looking at the triple chainset it seems they have a 39 middle ring so would have thought that is should be OK on a 39-50 double.
Thanks again!
The shift ramps on Shimano rings are designed to work together so using a double ring with a triple ring sometimes doesn't work perfectly as the ramps may not be matched properly.