KarlMarxist wrote:
to increase stiffness and provide a propulsion sensation.
Positive Contribution wrote:
Covered the distance on his own two feet counts as a PR. Official World Records? Well I guess that's for the rule makers to decide to keep things official and legit.
ddfun wrote:
Each person gets to decide what they count as their PR.
zzzz wrote:
You added a second to his time.
I'd count it as a PR. People have used those shoes in other races legally. The only non-legal thing done was rotating in fresh pacers. You and I could have pacers all the way to the finish because we aren't as fast. That means his only non-legal advantage is an advantage that almost all the rest of us already can have.
Blabla1 wrote:
Every other Olympic running distance is run on a bouncy track and no one says a thing, but if somone runs a marathon this way it doesn't count? That makes no sense. As long as there is no net downhill it's a record. If you think otherwise then Bekele and El Guerrouj are no world record holders.
Nikolai wrote:
zzzz wrote:
You added a second to his time.
I'd count it as a PR. People have used those shoes in other races legally. The only non-legal thing done was rotating in fresh pacers. You and I could have pacers all the way to the finish because we aren't as fast. That means his only non-legal advantage is an advantage that almost all the rest of us already can have.
And a personal Tesla with a 4m^2 board on the roof driving a couple of meters in front?
zzzz wrote:
Nikolai wrote:
zzzz wrote:
You added a second to his time.
I'd count it as a PR. People have used those shoes in other races legally. The only non-legal thing done was rotating in fresh pacers. You and I could have pacers all the way to the finish because we aren't as fast. That means his only non-legal advantage is an advantage that almost all the rest of us already can have.
And a personal Tesla with a 4m^2 board on the roof driving a couple of meters in front?
My impression is that the Tesla was too far ahead to provide any advantage at the speed they were going. This is based in part on experience on a bike at much higher speeds, having drafted behind things like trucks, buses, and so on when I was young. Maybe some aerodynamics experts can weigh in.
Nikolai wrote:
zzzz wrote:
Nikolai wrote:
zzzz wrote:
You added a second to his time.
I'd count it as a PR. People have used those shoes in other races legally. The only non-legal thing done was rotating in fresh pacers. You and I could have pacers all the way to the finish because we aren't as fast. That means his only non-legal advantage is an advantage that almost all the rest of us already can have.
And a personal Tesla with a 4m^2 board on the roof driving a couple of meters in front?
My impression is that the Tesla was too far ahead to provide any advantage at the speed they were going. This is based in part on experience on a bike at much higher speeds, having drafted behind things like trucks, buses, and so on when I was young. Maybe some aerodynamics experts can weigh in.
That Tesla cuts the wind significantly, which the formation of pacers then ran into, causing a further increase in drafting effect.
Believe me, those 3 minutes were cut from the car and bodies, not the shoes. Nike were so confident because they could test their theory in a wind tunnel easily. All they needed was for kipchoge to maintain 2:02:xx effort.
zzzz wrote:
Nikolai wrote:
zzzz wrote:
Nikolai wrote:
zzzz wrote:
You added a second to his time.
I'd count it as a PR. People have used those shoes in other races legally. The only non-legal thing done was rotating in fresh pacers. You and I could have pacers all the way to the finish because we aren't as fast. That means his only non-legal advantage is an advantage that almost all the rest of us already can have.
And a personal Tesla with a 4m^2 board on the roof driving a couple of meters in front?
My impression is that the Tesla was too far ahead to provide any advantage at the speed they were going. This is based in part on experience on a bike at much higher speeds, having drafted behind things like trucks, buses, and so on when I was young. Maybe some aerodynamics experts can weigh in.
That Tesla cuts the wind significantly, which the formation of pacers then ran into, causing a further increase in drafting effect.
Believe me, those 3 minutes were cut from the car and bodies, not the shoes. Nike were so confident because they could test their theory in a wind tunnel easily. All they needed was for kipchoge to maintain 2:02:xx effort.
Adding the benefit of the Tesla to the pacers to the benefit to Kipchoge doesn't make sense. This isn't like a chain of NASCAR cars. That Tesla is too far ahead to benefit Kipchoge. I'm not even sure the Tesla benefited the front pacer much.
I drove cross country three times last year in my Prius. That left me plenty of time to experiment with hypermiling and a bit of drafting (though I never go so close to be tailgating). I'd watch the effect of distance behind a big rig on the instantaneous miles per gallon, and realized at even at 65 mph, you don't get much of a draft behind a big rig unless you get too close for my comfort. At 13 mph, the effect is much shorter because drag goes up by the square of speed. The turbulent air behind the draftable distance of low pressure behind the truck also quickly ruins the effect. You guys with bikes with power meters could do testing too behind a friend driving a truck at 13 mph. I doubt there would any power savings at the distance Kipchoge was behind the Tesla.
