“The $25,000 Dempsey-MacReady prize will be awarded to the first person to pedal at a steady 90kph (56mph) for a solid hour. That hasn’t been achieved yet, but the current mark is 52.57mph, held by Sam Whittingham of Canada in the Varna Diablo speed bike.”
“The $23,000 .deciMach Prize will be given to the first HPV to exceed one-tenth the speed of sound for 200m. At sea level on a perfectly flat course, this is 75mph. At Battle Mountain, the speed is adjusted to 82mph to compensate for altitude and grade. Whittingham is also the fastest man on Earth in this competition, having clocked a speed of 81mph in 2003.”
What am I doing wrong? 75mph is 121.5km/h, is 437.4m/s. Speed of sound is around 330m/s at STP.
Has someone used the wrong pressure? Are they really doing this on Mars? That would be challenging, getting the required oxygen.
http://www.wisil.recumbents…
"Note the small video screen and the jet fighter breathing apparatus."
Was I drunk when I wrote that?
75mph is 121.5km/h is 33.75m/s is 1/10 speed of sound. I’m a fule!
As to your link: "<phil>He’s pushing a monster gear!</phil>"
I wasn’t about to check your maths but I thought you’d get that from the record’s name: the ".deciMACH Prize"? 😉
I even read that in the article. I don’t think I was drunk at the time, but I dunno what I was on…
A chair?
I’d still put money on your drunkeness 😛