So I was looking to upgrade a few parts for my 2nd bike. I was looking at nashbar and came up with a few ideas but in the end I found that 8speed group sets are not as easy as to find when trying to upgrade a triple. I was looking at a chainring/crank combo and it was about a second away from buying it. I found out its a 10 speed crank but from what I gathered the difference would be nothing if I used it on my 8speed set up.
I also noticed people used 10 speed FD and RD on 6,7,8,9 speed set ups. So what is the bottom line when it comes to swaping out parts? I know I need to keep my cassette 8 speed as I am not changing out my shifters (Triple / Eight) or chain. But as for Chainring/crank and FD/RD does it really make a big difference and if it does are we talking chain slip / miss shifting or just a bit of noise?