I'm sure this has been asked already.
I have a 7 speed drivetrain. Been riding the same bike for 8 years. My shifters are finally going out on me, and besides that i am thinking about upgrading my components to 8 and eventually buying a new frame. Thought i would slowly build a new bike. I was hoping i wouldn't have to upgrade my entire drivetrain at once. So my question is:
Is it possible to use 8 speed shifters with 7 speed cassete and derailleur? Is it even possible to upgrade peices of the drive train at a time? or all at once?
I'd rather stay at 7 speed but I wonder how long i'd be able to find 7 speed components. Maybe just buy a new bike?
While i'm at it. any opinions on SRAM attack twist shifters?
Sorry about the long winded question.