I have 9sp campy veloce groupset.
What would I need to upgrade to 10spd?
Obviously a new 10 spd cassette plus 10sp shifter.
Does the shifter upgrade involve replacing the whole brake lever/ shifter unit or is there another way?
Will the 9sp derailleur handle a 10spd cassette?
Also, is the 10sp cassette the same width as the 9sp and will fit my hub? If wider, presumably I will need a new hub fitting to my wheel or else a new rear wheel whilst I am at it?
The groupset is a few years old, from before 10spd was available if that makes a difference?
Thanks