How often do you people find yourselves using an 11 gear on a relatively flat course? I currently ride a 12x25 /w a 55/39 crank on 700 size wheels. Using the 52x12 at 90 rpm I'd be moving along at ~31.57mph vs ~34.44mph with a 52x11. And the numbers for a 55 chainring at 90rpm: 55x12 = ~32.77mph and 55x11 = ~35.74mph
As far as gear spacing both the Shimano 12-25 and 11-23 don't have a 16 gear.. so long story short.. if I'm a 90+ RPMer.. and can't push a bike anywhere near ~32 mph during any distance (flat) tri.. why would I want to ride an 11-23?? And the difference between the 53 and 55 chainring aren't that drastic, why would you use a 55 ring?
11 gear and 55 chainring only seem to make sense for those pedaling downhills.. or for the ultra-super-strong.
What did Boarderman use on his 1 hour record.. and what RPM.. hmm?? Just curious.
thanks,
mike
As far as gear spacing both the Shimano 12-25 and 11-23 don't have a 16 gear.. so long story short.. if I'm a 90+ RPMer.. and can't push a bike anywhere near ~32 mph during any distance (flat) tri.. why would I want to ride an 11-23?? And the difference between the 53 and 55 chainring aren't that drastic, why would you use a 55 ring?
11 gear and 55 chainring only seem to make sense for those pedaling downhills.. or for the ultra-super-strong.
What did Boarderman use on his 1 hour record.. and what RPM.. hmm?? Just curious.
thanks,
mike
