Old 10-06-19, 10:47 PM
  #10  
bargainguy
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I'm a shorty and have experimented with really short cranks. I also have a subinterest in folders, where short cranks come in handy for packing.

About a decade ago, I had Mark Stonich at BikeSmith Design and Fabrication modify a couple of Shimano cranks, a double 105 and a triple Ultegra, from 170 to 148mm. I put those 148s on a couple folders and non-folders and rode them around for awhile, then switched both cranks back to original so I could study the transition back after the 148s.

My conclusion: Great for spinning, lousy for power. Any time I had a strong headwind or a steep hill, it just felt like I was spinning and not getting anywhere.

The 148s just don't do it for me. I don't mind 165s and have them on a few bikes, mostly folders and my 650c wheel frames, whereas I save 170 for my 700c frames.
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