Right now I am running 42x16 and it feels like a am pedaling a bit too slow most of the time.
I only recently bought this bike and started to actually ride decent distances (10-15 miles every few days at an average of about 15-16mph).
I am wondering, should I buy a slightly larger cog, 17 maybe 18, or should I keep riding and wait for my legs to get stronger and consequently increase my average speed?
According to Sheldon Brown's gear calculator, with 42x16 @ 90 rpm, I will be going 18.8mph.
I can't keep a nearly 19mph constant for more than maybe 3-5 miles before I am tired.
42x17 on the other hand is 17.7 @ 90rpm and 42x18 is 16.7, both of which seem a bit more reasonable.
Right now, I am pedaling at nearly 80rpm which from what I have read is less than optimal and can tire my legs out faster as well as put more pressure on my knees.
ANYWAYS, what would you suggest? Keep the 16 and build some muscle or up to 17/18 and spin at the optimal amount?
Thanks for any help.
PS: and btw, I live in Florida where there isn't a hill within 20 miles (besides overpasses) so that is not an issue