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Ok, well if we're going to include optimisations to rider position on top of swapping the cranks then I can believe that.
Hovis-
This was my point. Shorter cranks might facilitate a more aero position, but simply changing cranks length and keeping your old position won't change much.
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if we're going to include optimisations to rider position
In the Cervelo tests, it wasn't an optimisation, it was just picking one fit dimension to leave unchanged. I think in some cases they were then able to make use of the hip angle opening from short cranks to lower the front end and get even better aeros.
umop3pisdn
gbj_tester
You're probably missing the fact that they raised the saddles to keep leg extension the same for all crank lengths, but didn't touch the bars. That effectively increased the saddle to bar drop, which would have changed the torso angle.