…issued for bikes in the 54cm region.
My best guess is 40% 170, 30% 172.5, 30% 175. Few others but nothing significant. Also, the longer cranks seem to be gaining.
Styrrell
I would think that 54-56cm fames are 50-60% 172.5…
Jimmy:
You should buy 172.5. In addition I have a set of Dura Ace Calipers for sale on my Colnago if you are interested.
Mike
I’ll take a look.
i’ve got a 55cm with 172.5
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The “average” 54 cm rider is about 5’9" and based upon “average” leg length inseam of 80-82 usually rides on “average” a 170mm crank.
I’m 5’10" and ride a 54 P2K with 172.5 but prefer 170 on my 53 Lemond road bike. Rode both sizes on my Giant TCR.
I’ve done some experimenting swapping back and forth and honestly can’t tell much difference.
A while back L Zinn was doing an article on crank length. He got a bunch of lengths of the same model from very short to very long. Most of his testing showed little difference. After he was done je left a set on his personal bike. Some time any many rides later he discovered that he had a different lenght on each side, never noticed. Whe you hold a 170 and a 172.5 side by side its amazing how little the difference is (I know, I know 2.5 mm).
Styrrell.