I just wanted to bump this thread back up because I've started a similar thread in the Folders forum:
http://www.bikeforums.net/showthread.php?t=369756
Here the debate concerned the respective merits of 165 - 180 mm crank arms. I'm starting to think those are all in the "too long" range, so I'm wondering if anyone has tried significantly shorter cranks, i.e. less than 150 mm?
Yes I use 135mm long cranks but I have very short legs. For me its about getting a proportionaly correct crank length and its done wonders for my cycling. The trick when you go to shorter cranks is moving the saddle rearwards to maintain KOPS and not effectively move way in front of it.
Regards, Anthony