Originally Posted by
Spoonrobot
Are you sure about that?
The nominal tire value (27") at 90rpm with 42/18 gives me a speed of 16.9 mph.
42/15 with 23c tires will give a speed of 19.7 mph at 90rpm. Is that what you meant?
d'oh!
ur right.. i entered 15t into the calculator (which would be my main gear) instead of 18t
I still assert that what's keeping people from riding at a decent clip on a 42/18 like gear isn't cadence (which is quickly trainable), it's power output, which takes more time and maintenance to train.
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