Originally Posted by
Ygduf
short answer: if it were easy, like someone said "here's your bike with different length cranks" and all I had to do was ride it I would try everything.
As is, I'm happy where I'm at and too lazy to change it. I think about how long a half-cm is and look at the length of my legs and think again about half a cm. That's a miniscule change in ratio and my resistance to extra effort is pretty high.
i hear ya.
presumably you tested it before you put it on the TT bike, though, right? and then you tested it when you put it on the road bike.
i forget which PM you have, but did you buy a whole new crankset or just swap arms? on some units, a crank arm change can cause slope to change.
people get all upset over 170 vs 172.5.......it's 2.5mm. the so-called range of arm lengths we have (basically 170-172.5-175 covers probably >95% of bikes sold to adults) is pretty silly considering the range of height/leg/femur length among that population.