Crank arm length

dudemanchoo72
dudemanchoo72 Posts: 28
edited April 2018 in MTB general
I’m currently running 170mm crank arms on my bike. Is there a major difference between that and 175mm when riding? Is it just a case of more leverage when pedalling?

Comments

  • whyamihere
    whyamihere Posts: 7,715
    It's highly unlikely you'd ever notice.
  • cougie
    cougie Posts: 22,512
    I rode my road bike with odd length cranks and completely forgot I'd done it. You won't notice any difference. 5mm is tiny compared to the length of your leg plus foot..
  • dudemanchoo72
    dudemanchoo72 Posts: 28
    Thank you. I thought as much. Gonna go 1x soon so just wanted to know.
  • poah
    poah Posts: 3,369
    depends on your leg length and the cadence you run. I can tell the difference between 165 and 170. I have to spin a lot more on 165 than I do on 170.
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  • 02gf74
    02gf74 Posts: 1,171
    cougie wrote:
    . 5mm is tiny compared to the length of your leg plus foot..


    10mm difference in stroke, or 2.9%, not sure what length of leg has to do with as it effects the stroke.

    Probably never notice the difference, unless it's a road bike where the idea is to spin at constant cadence, mtb is different style.

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