Why are nearly all old road cranks made for hobbits?

How tall are you? 5'8" or less and 170 is probably the right size - better spinning and road bikes tend to be a bit more flexible in crank length rather than the virtually one size fits all 175mm MTB fitment. I use a 172.5mm Campag crank on my SS.
 
Agency_Scum":18hz6qfz said:
170mm wherever I look. Why?

Same problem here Agency Scum. I always found Mavic and Campag readily available in 180's mailorder and have some 181 Cook Bros on my Yeti!
 
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