imswimmer328 wrote:
The difference in force is minimal. For example, at 300w, 80rpm, you have to exert 20N more force for 155mm cranks than you do 170mm. As studies have shown, there are few, if any, advantages to having longer cranks for time trialing.
Basically all I'm trying to say is you're making this out to be a big change with potential negative side effects, whereas it's more likely the OP will switch cranks and notice an immediate positive one in aero.
"minimal" mean nothing. There is an impact, it can be calculated, any comment on its possible consequences on someone is... a comment, an uneducated guess, not a fact, not a proof.
Wich studies ? Didn't noticed that TT serious peoples goes with 150mm crank for TT or Hour Record.
Dumoulin goes 150mm ?
Wiggins or Dowsett went 150mm for Hour Record ?
How stupid they are...
What I say is : there is some impacts, some can be positive, some can be negatives, and it is hard to tell, because this is very personal.
Maybe it works for you, fine. Does not mean it will work for someone else. An exemple is never a proof. A cohort result can be a proof, in a limited context. Many PhD thesis have been made on crank length and RPM. And the results are... well, not so easy to tell.
Not trying to push in one direction (short, short, short....or long, long, long, ...), just trying to give a view of the possible impacts.
Wandering what kind of "minimal" thing pushed Frodeno out of Kona podium the 2 last years.