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Old 03-28-19, 09:00 AM
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rhm
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Bikes: 1940s Fothergill, 1959 Allegro Special, 1963? Claud Butler Olympic Sprint, Lambert 'Clubman', 1974 Fuji "the Ace", 1976 Holdsworth 650b conversion rando bike, 1983 Trek 720 tourer, 1984 Counterpoint Opus II, 1993 Basso Gap, 2010 Downtube 8h, and...

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Originally Posted by unterhausen View Post
Just make sure to lower the seat 5mm when you put the new cranks on, or it's not really a fair trial.

my experience with crank length is that confirmation bias dominates. ...
Confirmation bias dominates, yes, that's for sure.

But no, if you shorten your crank arm by 5 mm, you will want to raise your saddle by 5 mm, not lower it.

Before I had my Squarebuilt custom frame made, wanting to try 26 x 2.3 Rat Trap Pass tires, I built up an old MTB frame for long distance riding. The bike was designed for 1.75" tires and 175 mm cranks, so when I adjusted the saddle height to account for my fatter tires and shorter cranks, I was so far off the ground that I almost fell over at stops. I know short women are familiar with this sensation, but I hadn't experienced it since I was a little kid riding my brother's bike.
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