Gear ratio and gradient.- Mtbr.com
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  1. #1
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    Gear ratio and gradient.

    After a bit of advice.
    I've got a race coming up in the mountains and has short sections of 25% gradient. I basically live in the flats the steepest we have is 20%.
    Does a harder gear and a smaller gradient feel like a easier gear on steeper gradient ?
    Something along the lines of,
    32*16 at 15%
    32*18 at 20%
    32*20 at 25%
    Would all be fairly comparative or am I thinking about it the wrong way ?
    What are your thoughts ?
    Thanks.

  2. #2
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    How long is steep grade?

    My last SS race was mostly shallow grades, but had one short section that was super steep. Alot of geared riders were walking it. I geared for other 99% of the lap and just ran up the short steep bit. Now if there is a high percent of your lap at a steep grade you will need to gear for it. What is really tough is you have 50% of lap being flats and then 50% being steep extended climbs. Do you gear for the flats or the climbs? Testing is probably the only way to figure out what works for you.

    BTW.. smaller cog = harder to climb, but more speed on the flats. But there is not grade vs gear curve. That is rider dependent.
    Joe
    '18 Specialized Epic 29", Vassago Verhauen SS 29", '13 Santa Cruz Solo 27.5", XC, AM, blah blah blah.. I just ride.

  3. #3
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    Course has basically no flats, 8 km loop. The steep part is about 500 meters long, guess I'll just train on the 16 at home and put the 20 when I'm going away.

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