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Old 07-27-2009, 10:07 PM   #1
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Crank Size
How can you determine the crank size on your bike?


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Old 07-27-2009, 10:27 PM   #2
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According to Peter White your crank length should be 18.5% of the length of your leg measuring from the top of your femur to the floor.
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Old 07-27-2009, 10:28 PM   #3
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It is usually stamped on the inside of one of the crank arms.
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Old 07-28-2009, 01:09 AM   #4
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Look on the inside of the crank arms. It should be stamped such as 170, 175, etc.
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Old 07-28-2009, 01:18 AM   #5
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^^ No, that will not work at all...
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Old 07-28-2009, 01:57 AM   #6
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Whoops didnt even read your response before i posted. Hopefully that will actually work
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Old 07-28-2009, 04:17 AM   #7
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Have you looked on the inside of your crank arm? It's usually stamped on there
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Old 07-28-2009, 03:49 PM   #8
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Apparently, I may have misread the op's post. Anyway, if the length is not stamped into the crankarm, simply grab a ruler and measure it. Crankarm length is measured in millimeters from the center of the pedal shaft to the center of the bb spindle. If your ruler doesn't have metric graduations, the conversion factor for inches to mm's is 25.4.
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Old 07-28-2009, 07:32 PM   #9
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the OP did not say he wanted to know where it is located, but how to determine what it should be?
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Old 07-28-2009, 07:37 PM   #10
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Quote:
Originally Posted by vassago View Post
the OP did not say he wanted to know where it is located, but how to determine what it should be?
That's what I thought at first, but after reading the post a second time, I'm not sure because of the wording. Either way, I think all the bases have been covered.


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