Specific example - partner's bike is currently 9 speed. Considering adding the nice new Tiagra 10 speed kit. Could I just change shifters/cassette/derraileurs and leave the chainset as is?
Or are the chainrings thinner to account for the thinner chain?
Er, potentially stupid question.
How speed specific are chainsets?
Specific example - partner's bike is currently 9 speed. Considering adding the nice new Tiagra 10 speed kit. Could I just change shifters/cassette/derraileurs and leave the chainset as is?
Or are the chainrings thinner to account for the thinner chain?