Hi folks, I'm a fairly new poster to these forums, and I appreciate the expertise available.
Here's my dilemma (bear with me):
I just bought a Bianchi Cyclocross bike online - its a '97 Crmo reparto corse. The seller is offering me the choice of two cranksets: the ultegra triple (52-42-30) that's currently mounted or a Dura-ace double with kinda odd rings, 53-40. Its got an ultegra 12-25 cogset in the back. I've got to decide ASAP.
I plan on using this bike for my everyday around-towner as well as the odd rec-ride (half-centuries etc.) and maybe a little trail riding. I may try an entry level cyclocross race this year if I can get some practice on the bike. I'm a 35yr old Seattlite in fairly good shape, but am certainly no road racer. I currently ride around on a Softride roadwing with 53-39 in front and 13-26 in back, I don't mind this set up although I certainly stand up for some of the Seattle hills. Here's my thinking so far:
The triple: would get me plenty of range for commuting, fun rides etc. Also I've got my first kid on the way and the granny could help me haul a bike trailer around. However it seems like a liability for racing and also I like a double for just sprinting around town lightly loaded. I guess for a race I could lock the deraillear over the middle ring and swap the big ring for a chainguard? Of course then I'd want a wider spread in the back, and highest I could go is 27t without swapping out the derailleur as well.
The double: is clearly geared too high, so I would have to swap out the chainrings, but lowest I can go is 38(right?) matched to say a 48 or 50. For the cost of two chainrings maybe I could spend a bit more and get a compact crankset with like a 48-36, at least I could use the same BB as the DA (I think). The current cogset would then probably be OK.
Also I've got speedplay frogs. How well do these work in a CX type application?
Thanks very much - Colin