I have a specialized road bike with Sora. It has a 50/34 compact chainset and an 11/32 cassette.
I have ordered a new wheelset and some 105 5700 shifters and mechs, a tiagra 12/30 cassette and a 10spd chain.
When I install all this awesome stuff, and it comes to the chain; I'm guessing I'd have to ignore the length of the old chain right? How do I know how long the new chain should be? Or is it as simple as having the new one 2 links shorter than the old one due to the new cassette having 2 less teeth on the largest sprocket?
Any help would be great thanks.