Ok Guys and Gals, I just visited my LBS and received what I consider a load of BS when I asked a very technical compatibility question. So here goes:
Assuming a few things here. First, 10spd cassette is narrower than a 9spd cassette since you have to use a spacer for the 10spd cassette on a 7700 series compatible cassette body. Second, if the first assumption is true than the 7700 series rear derailleur should have enough travel to accomodate a 7800 series cassette. Third, I will use a 10spd chain. If all of this is true why do I have to use a 7800 series derailleur instead of a 7700 series derailleur?
I consider myself to be a decent home wrench and cannot figure this one out. Has anyone experimented with the set-up I have described and if so what were your results?
Thanks, Pete.
Assuming a few things here. First, 10spd cassette is narrower than a 9spd cassette since you have to use a spacer for the 10spd cassette on a 7700 series compatible cassette body. Second, if the first assumption is true than the 7700 series rear derailleur should have enough travel to accomodate a 7800 series cassette. Third, I will use a 10spd chain. If all of this is true why do I have to use a 7800 series derailleur instead of a 7700 series derailleur?
I consider myself to be a decent home wrench and cannot figure this one out. Has anyone experimented with the set-up I have described and if so what were your results?
Thanks, Pete.