What does an 18-percent grade look like?
Percent grade is 100 * (rise / run) = 100 * tan( change in elevation / horizontal distance ).
So, the common question is, is a 100-percent grade 45 degrees from horizontal, or is it vertical? Well, from what I can tell, it's 45 degrees. It also makes me wonder, do all the mileage readings from GPSs read low? Are they measuring actual run, or are they measuring the distance one travels, including the rise?
"The Wall" on the Lost Coast is located at approximately 40° 25' 54.46", -124° 24' 2.71" and supposedly has a grade of 18-percent for the first mile or so. We rode the first third of a mile or so just to try it out.
posted by juarezj at 11:02 AM
2 Comments:
So how did it feel?
Recently reading about an 18 percent grade on the Tour de France that gave the riders a good workout.
Was this road just too tall, too long, too hard, too scary to continue ... just curious.
:)
Oh, we stopped because we were meeting people and we had reached our destination (at the bottom of the hill). But we had arrived early, so we killed some time climbing the hill.
It's not bad if you have low enough gears. We weren't racing up it or anything. 18-percent is pretty steep, but it's not the steepest I've seen.
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