I ordered a 12-36 SRAM PG 1070 rear casette for my bike for a really hilly 200k I'm training for this summer. My bike currently has a 53-39 front and a 11-26 rear. My question(s) is whether or not I'm going to need to buy a new rear derailleur to handle this new cassette or whether the SRAM Force one already on there can handle it. I assume it's a standard mid length derailleur (I'm not sure how to tell). Any suggestions on one to buy if I do need one? I'd like to stick with SRAM if possible.
Another question, what would you rate the difficulty in changing out these cassettes? I have only read how to do it and I'm not scared, I just don't want to break my parts. I'm worried about the adjustments I'd need to make to my rear derailleur to handle the larger rear cassette.
Oh yea, I also picked up a new chain as I figured that would be needed with this new setup and it couldn't hurt with mine being 2 years old anyhow.
Thanks for the help!