Low Gear Ratio?

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  • one for those of you who know these things.....am planning an Alpine trip and have an inner chain ring of 32t, however to get up the Cols on a touring bike loaded with panniers a friend has offered me an unwanted cassette 11/32t I already have a long cage derailleur but is the low gear too low as it would appear to be a 1-1 ratio?

  • There's no too low for loaded touring in the mountains i'd say

  • but would pedalling a rear 32t sprocket with a 32t chain ring cancel any forward motion?

  • wat?

  • If you pedal, you move, surely?

  • I think i got this...
    If your chainring is bigger than your sprocket you move forward
    If your chainring is smaller than your sprocket you move backwards
    If both are equally sized they cancel each other out leaving you with a fancy push bike
    Or something

  • I wondered why mountain bikers push uphill, cassette bigger than front chain ring explains it

  • same sized front and rear are effectively a neutral gear. thats how they work on electric bikes, they go in to that gear when you're not moving. neutral

  • where I'm getting confused is does a 32t rear sprocket coupled with a 32t chain wheel = 1 x wheel circumference rotation ie: with a 27" rear wheel = 27" rotation per complete pedal revolution?

  • http://www.bikecalc.com/speed_at_cadenceĀ­

    Stick 32,32 in the above and look at what cadence you think you'll be doing and decide if you'll be faster pushing

  • Pi x your actual wheel diameter( tyre) = distance per pedal revolution. Approx 2 metres

  • What happens when you pedal backwards?

  • You're good at fixie.

  • Change of plans....now going by tandem!!

  • same sized front and rear are effectively a neutral gear


  • Has this been resolved yet?

  • OP busy riding backwards up a mountain.

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Low Gear Ratio?

Posted by Avatar for saxby's @saxby's