Cycling unfair to big guys?
#151
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I humbly disagree with the notion that equal w/kg the heavier rider is faster uphill. Im a LARGE rider (6'1" 230lbs) and i have friends with lower w/kg and i wreck them in flat terrain, but on climbs, as the grade increases, so does their advantage. Remember that when cruising in flats, weight is a non issue, but as the grade increases, the y-axis penalty influences your forward progress more and more.
I have a particular friend that i determined after a week of riding in a pretty hilly/mountainous area, that 3 1/2% grade or so is our level ground powerwise, haha
I have a particular friend that i determined after a week of riding in a pretty hilly/mountainous area, that 3 1/2% grade or so is our level ground powerwise, haha
#152
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Weight is factored in to the equation in with the whole watts/kg thang. Your friends might have less absolute power than you, which would explain why you're faster in the flats, but the fact that they get up the hills faster says that they have better w/kg.
#153
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based on the FTP tests, i have a better ratio (not that im strong in general cycling terms). But is it not true that as the grade increase, so does the impact of the weight? Where does the simple "w/kg" play into that? IMO w/kg is most relevant for acceleration, sort of like in drag racing.
any physicists in the house? haha
any physicists in the house? haha
#154
Hi,
It's a question that I've had for a while. What advantages do big guys have over skinny guys in cycling?
1. climbing - no
2. Flats - I would think no.
3. TT - I would think no again. Plenty of good skinny TTists.
4. Sprinting - Not sure. Plenty of good skinny sprinters too.
5. Descents - Perhaps, but it hardly makes up for the time lost while climbing.
So is cycling as a sport unfair to the big guys?
It's a question that I've had for a while. What advantages do big guys have over skinny guys in cycling?
1. climbing - no
2. Flats - I would think no.
3. TT - I would think no again. Plenty of good skinny TTists.
4. Sprinting - Not sure. Plenty of good skinny sprinters too.
5. Descents - Perhaps, but it hardly makes up for the time lost while climbing.
So is cycling as a sport unfair to the big guys?
Also, in other cycling competitions, the cyclists look like beasts and even make me look like an underfed teenager. Gregory Bauge comes to mind
#155
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based on the FTP tests, i have a better ratio (not that im strong in general cycling terms). But is it not true that as the grade increase, so does the impact of the weight? Where does the simple "w/kg" play into that? IMO w/kg is most relevant for acceleration, sort of like in drag racing.
any physicists in the house? haha
any physicists in the house? haha
FTP measures the watts you can hold for an hour. So on long climbs it's going to be pretty predictive. On shorter climbs, not necessarily so. If we're talking a 2 minute climb, his 2 minute w/kg could be better than yours, even if your ftp is higher.
For example, I can handle short climbs with little guys pretty well because my one minute power is good. Sustained climbs, little light guys drop me like a rock.
And if he's dropping you on sustained steep climbs, his actual FTP/kg is higher than yours regardless of the tests, or he's better at actually sustaining his FTP in reality. Some people take tests better than others.
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#157
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I suck at math, but if im reading this correctly,
https://www.trainingbible.com/joesblo...r-formula.html
(again, not trying to be argumentative, just trying to figure this out for real)
https://www.trainingbible.com/joesblo...r-formula.html
"bike + rider weight (kg) x 9.8 x elevation gain (meters) / time (seconds) = power (watts). Add 10% for rolling and air resistance"
It looks like as far as the physics, for a given elevation over time, the power requirement increases geometrically in relation to a linear increase in weight. (again, not trying to be argumentative, just trying to figure this out for real)
#158
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I suck at math, but if im reading this correctly,
https://www.trainingbible.com/joesblo...r-formula.html
(again, not trying to be argumentative, just trying to figure this out for real)
https://www.trainingbible.com/joesblo...r-formula.html
"bike + rider weight (kg) x 9.8 x elevation gain (meters) / time (seconds) = power (watts). Add 10% for rolling and air resistance"
It looks like as far as the physics, for a given elevation over time, the power requirement increases geometrically in relation to a linear increase in weight. (again, not trying to be argumentative, just trying to figure this out for real)
power / rider weight = bike weight x 9.8 x elevation gain
Assuming bike weights are identical, the higher w/kg will drive the higher elevation gain (i.e., first to the top).
#159
Making a kilometer blurry
I suck at math, but if im reading this correctly,
https://www.trainingbible.com/joesblo...r-formula.html
(again, not trying to be argumentative, just trying to figure this out for real)
https://www.trainingbible.com/joesblo...r-formula.html
"bike + rider weight (kg) x 9.8 x elevation gain (meters) / time (seconds) = power (watts). Add 10% for rolling and air resistance"
It looks like as far as the physics, for a given elevation over time, the power requirement increases geometrically in relation to a linear increase in weight. (again, not trying to be argumentative, just trying to figure this out for real)
For wind resistance, power required is cubic relative to speed. So, going x times faster requires x³ as much power. 200W at 20mph means 40mph is 2x as fast, so requires 2³ = 8 times as much power, or 1600W.
#161
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No, it's linear. Put some numbers into the equation. You'll see that twice the elevation gain in the same time requires twice the power.
For wind resistance, power required is cubic relative to speed. So, going x times faster requires x³ as much power. 200W at 20mph means 40mph is 2x as fast, so requires 2³ = 8 times as much power, or 1600W.
For wind resistance, power required is cubic relative to speed. So, going x times faster requires x³ as much power. 200W at 20mph means 40mph is 2x as fast, so requires 2³ = 8 times as much power, or 1600W.
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It's all greek to me all I can understand in the stupid sport is it hurts no matter what level you are.
I am like a greyhound when I ride, throw a rabbit in front of me and I'll chase it...
#162
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I'd also note that when you're climbing gears come into play. You might be able to sustain X watts when spinning a mid-range gear at 90-100 RPM, but you're unlikely to be able to sustain that same power output if you end up in your lowest gear mashing at 40-50 rpm.
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#163
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#164
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That's me at 6' and 170. How come I don't look like him?
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