Hi, I need a bit of advise about compatibility. I currently have 8 speed Shimano Sora on my bike, but would rather have 10 speed 105. Is it worth my replacing it a bit at a time, as I get parts cheap (I'm a bit broke at the moment), or ill it not work?
I was wondering if I get a new rear derailler, would a 10 speed work OK on my 8 speed block? And will a front derailler for 10 speed work OK with the 8 speed shifters and chainset, or is the spacing different? For that matter, will a 10 speed chainset work with an 8 speed chain and derailler?
If these parts are fairly compatible, I was thinking I could replace it a bit at a time, and get the shifters and 10 speed cassette last of all, when I'm a bit less broke.