I currently have a 2008 Fuji Roubaix with a 50/34 up front and 11-25 (9-speed) in the back. I am sort of new to road biking - this is my first road bike and I bought it in Feb 2009. It seems like 95% of the time (level and moderate hills) I am either on the 50 crank and on the larger 4-5 rings in the back, or on the 34 crank and on the smaller 4-5 rings in the back. Which means for the majority of my ride, I am teetering between the large and small crank. It just seems to make more sense to me to try converting the crank over to a single 40T (or in that ballpark) and not have to constantly monitor my front chainring.
Is it common to do this? I have searched on crankset parts and most of the time I just see double and triple cranksets. (I went to FSA and Truvativ's websites). The way I look at it, if I can convert to a single crank for like $100 or less, it's worth the shot. If it sux, I can always remount the original crank that's on there now.
Quick background: My other bike is a (hybrid) GT Zum with a single chainring (38T) in the front (10-30T in the back, 8-speed) and I never feel like I need more gears.