Interesting. The article I read was hereInterestingly analysis of power output shows that shorter cranks are of more benefit to taller people - it means they have to move the higher mass of their legs less. Which is REALLY interesting I think.
And
Hope EVO 155 Cranks say bigger isn't always better
Hope Technology are now machining the Hope EVO 155 Cranks, said to offer improved stability, faster "spin up", and more ground clearancebikerumor.com
Hope Evo 155mm Crankset Review
Rhys has been spinning these rinky dink Hope Evo 155mm length cranks for quite a while now. Are they rad or just a short(!) lived fad?
singletrackworld.com