Normalizing Weight, Gearing and Grade
#1
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Joined: Nov 2009
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From: SF Penunsula
Bikes: 1970? Dawes Galaxy (cannibalized), 197? Bob Jackson Frankenbike, 1989 Jamis Diablo
Normalizing Weight, Gearing and Grade
I have a theoretical question for the mathematicians in BF land…
Is there an equation out there that normalizes weight, gearing and hill grade between two different riders?
For example: Say rider A weighs 135 lbs and is on a 20 lb bike climbing a 10% grade with gearing that gives him 42.7 gear inches is putting out X amount of effort (watts, HP, whatever). How much effort would rider B, who weighs 200 lbs, on the same bike with the same gearing have to put out? (or, how many gear inches would rider B need in order to equal the same amount of effort that rider A is exerting)
This is more of a personal curiosity than anything, because as we all know the 200 lb guy is too fat for this sport (had to get it out there
). My [non-mathematical] mind says there should be a way to do this, but I cannot think of how.
Thanks.
Is there an equation out there that normalizes weight, gearing and hill grade between two different riders?
For example: Say rider A weighs 135 lbs and is on a 20 lb bike climbing a 10% grade with gearing that gives him 42.7 gear inches is putting out X amount of effort (watts, HP, whatever). How much effort would rider B, who weighs 200 lbs, on the same bike with the same gearing have to put out? (or, how many gear inches would rider B need in order to equal the same amount of effort that rider A is exerting)
This is more of a personal curiosity than anything, because as we all know the 200 lb guy is too fat for this sport (had to get it out there
). My [non-mathematical] mind says there should be a way to do this, but I cannot think of how.Thanks.
#2
Senior Member


Joined: Sep 2007
Posts: 15,263
Likes: 1,763
From: Far beyond the pale horizon.
You could use this for most of what you are asking.
https://noping.net/english/
The gear-inches thing depends on cadence, which varies due to many things such as personal preference.
https://noping.net/english/
The gear-inches thing depends on cadence, which varies due to many things such as personal preference.
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