Originally Posted by Macross
I guess I have to admit I'm a weak cyclist. Whenever I uses the large flywheel (53) with the smaller cassette (12), I can't seems to pedal for long even on flat roads
. Currently using a 23 front and 25 rear training tyres. Does that really affect the performance?
That's 119 gear inches!!! No wonder you can't pedal for long! I'd suggest you should be riding something like 80 (53X18) to 84 inches (53x17) on the flat. Better to spin the pedals than to struggle like you appear to be doing.