chainline during a drivetrain upgrade
howdy. first big mechanical project on my bike, hopefully i'm not going to miss anything big.
one of the main things i'm worried about is how the upgrade is going to affect my chainline. i'm moving from sora 8x3speed to 105 9x2 speed. I should be able to use the same freehub on the back and just throw on the new cassette, right? so assuming that's the case, what will I need to take into account chainline wise moving from 8 sprocket to 9 sprocket cassette, and triple to double crank in the front? thanks for help.