Originally Posted by
briscoelab
Bob:
Lots of people use the 13-26 with 10 speed Campy. It does give up a bit on the top end, but you get a wonderful close gear ratio. The 13-26, like a 12-23, has both a 16T and an 18T. That is highly beneficial to both people who do a lot of climbing and people who live in flat to rolling terrain, as you can really dial in your cadence.
Obviously, the 13 isn't the best if you're racing (you can still spin a 53x13 to a pretty good speed though). But, if you're training.... it's actually a nice cassette for the right conditions.
I understand your point and I agree for the most part if talking about 10spd. For 11spd this option does not exist.
The fact remains that we are talking about a particular fame that is meant for racing and isn't really a climbing frame. For
this frame a 13-26 is not the most appropriate selection. I'd say 12-23 for racing and 12-25 for climbing. Also, the 12-25 is still the best selling cassette by far in most markets (there will, of course, be exceptions).