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  1. #1
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    Measuring grades

    I found a new fireroad today that is just plain sick ! The entire 3 or 4 miles is insanely steep, but much of it is so steep that it's all but impossible to ride up, and walking it is almost as bad. But it made me wonder, when i hear some of you cite what % a perticular grade is, how are you measuring this? Are there computers that can do this or what? I'd like to be able to know how steep some of the parts are to compare with other rides.

    Thanks
    I keep telling my lungs this is a normal healthy activity, but they just won't listen.

  2. #2
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    feet vertical per 100 feet. ie, 100% grade = 45 degree incline.

  3. #3
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    oops didn't read the whole post. some really steep roads will have road signs that tell the grade. The steepest I've seen is 12%, but I do live in MD. I wonder if any cyclo computers have this feature. It would be neat to have, but I don't really know how much I would use it, except to brag to friends...

  4. #4
    Eleventy Billion Posts schnell's Avatar
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    Some computers will tell you altitude change. Given that and distance you could come up with a rough idea of grade - or at least an average grade.

    From what I've heard, they measure altitude by air pressure. Changes in wind, weather, or even a car driving by can throw them off. They should be able to give you a reasonably accurate reading though.
    There are two kinds of people in this world I can't stand. People that are
    intolerant of other people's cultures and the Dutch.

  5. #5
    BJS2003
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    Or you could get an inclinometer.

    http://www.adv-cycling.org/cgi-shl/w...2&sid=4l0YJ7Si

  6. #6
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    Cool ! I think i need one of those ! Thanks.
    I keep telling my lungs this is a normal healthy activity, but they just won't listen.

  7. #7
    I ride a REAL Schwinn!
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    Many ride-guide type books that include fireroads will already figure the grade out for you.

    -Moab
    '00 Schwinn Moab 3 - XTR/XT/Thomson/Rhyno Lites/Skareb Super
    Lemond Nevada City - Almost Stock!

  8. #8
    Senior Member BikerRyan's Avatar
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    Ciclo sport has a cyclocomputer that figures grades as well as a million other things you thought you would never need to know. Most of the functions are more roadie oriented but hey that doesn't mean that we mountain bikers cannot use it. They also make this crazy navigation system for cyclists to track their routes. Check them out here http://www.ciclosport.de/ it is called the HAC 4.

    -Ryan
    Your bike mechanic is wise beyond your wildest dreams.

    If you can't be good at one sport then you can be okay at three.

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