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Old 07-01-06, 12:43 AM   #1
dauphin
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What's the grade?

Ok...so the past few days I've been trying to challenge myself with hills that before I avoided like the plague. Today I rode up a pretty scary hill around 11am and did it around 8 mph from bottom to top. Does anyone here have any idea how to figure the grade of a hill? For those of us (ME) who are mathematically challenged....keep it simple.
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Old 07-01-06, 01:05 AM   #2
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Rise divided by length. If you gain 200 ft. of altitude in a mile: 200/5280 = 3.8% grade. We math-impaired people have to stick together.
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Old 07-01-06, 06:05 AM   #3
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Rise divided by length. If you gain 200 ft. of altitude in a mile: 200/5280 = 3.8% grade. We math-impaired people have to stick together.
Thats not a hill- Its a slope. Sorry about that but I divide height climbed into distance so 200metre climb in 1000metre will be 200/1,000 will equal 1 in 5 or 20 % Exactly the same maths but why worry- Hills are only good for going down and then the only thing to worry about is do my brakes work.
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Old 07-01-06, 06:30 AM   #4
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I've found it best just to go down hills.
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Old 07-01-06, 10:56 AM   #5
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Yeah, but what i can't figure out is how much elevation has been achieved in a given distance. How does one know that?
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Old 07-01-06, 11:09 AM   #6
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Quote:
Originally Posted by dauphin
Ok...so the past few days I've been trying to challenge myself with hills that before I avoided like the plague. Today I rode up a pretty scary hill around 11am and did it around 8 mph from bottom to top. Does anyone here have any idea how to figure the grade of a hill? For those of us (ME) who are mathematically challenged....keep it simple.
I have a cyclometer that will indicate the grade. While it's not 100% accurate it works pretty well.
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Old 07-01-06, 01:56 PM   #7
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Yeah, but what i can't figure out is how much elevation has been achieved in a given distance. How does one know that?
Google Earth or http://www.gmap-pedometer.com/
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