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Old 10-19-2013, 03:17 PM   #811 (permalink)
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TU Delft students beat the world record for electric car acceleration | RobAid
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Slightly off-topic as aerodynamics are not the prior point of attention here, but I hope that it can be allowed for once

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Old 10-21-2013, 05:29 AM   #812 (permalink)
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Quote:
Originally Posted by NeilBlanchard View Post
This is not a car, but it is the world record bicycle - it went over 83MPH:
Impressive, but not really real-world proof if you need folks to hold the bike upright whenever you stop, then push it so it gains speed and can be kept upright by the rider
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Old 10-21-2013, 06:20 AM   #813 (permalink)
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I agree - I like the Quest velomobile because it is a practical vehicle; with three wheels and the rider can get in and out all on their own.


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Old 10-21-2013, 10:12 AM   #814 (permalink)
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Quote:
Originally Posted by RedDevil View Post
The hole in the nose lets in at least 10 liters of air per second at speed. It is not hot at altitude. And the record attempt itself (after gently getting up to pace for 10 miles or so) was a very short sprint. Most of the breathing was done after the fact
The actual run up to the 200 meter timing traps is 5 miles. It does get very warm inside once all the covers are in place but not unbearably so. After the traps is a mile to allow the bike to slow down before the catch area.

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Impressive, but not really real-world proof if you need folks to hold the bike upright whenever you stop, then push it so it gains speed and can be kept upright by the rider
Nor is it supposed to be. These bikes are made specifically to set human powered speed records although a few of the slower ones(50 to 60mph) are streetable and able to self launch and stop.

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Old 10-21-2013, 02:51 PM   #815 (permalink)
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An Illustrated History Of Automotive Aerodynamics – In Three Parts | The Truth About Cars


Automotive History: An Illustrated History Of Automotive Aerodynamics – Part 1 (1899 – 1939)


Claimed Cd = 0.26
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Old 10-21-2013, 03:09 PM   #816 (permalink)
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Old 10-21-2013, 03:18 PM   #817 (permalink)
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Old 10-21-2013, 03:25 PM   #818 (permalink)
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Futuristic, self-balancing Gyro-X to be restored - Autoweek


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Old 10-21-2013, 04:28 PM   #819 (permalink)
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Quote:
Originally Posted by RedDevil View Post
The hole in the nose lets in at least 10 liters of air per second at speed. It is not hot at altitude. And the record attempt itself (after gently getting up to pace for 10 miles or so) was a very short sprint. Most of the breathing was done after the fact
My mistake ( or is the new terminology supposed to be "my bad " )

Yes, my mistake. I saw the hole in the nose right after I posted. I was actually thinking of the HPV racers from the previous years that were devoid of this hole.



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Old 10-22-2013, 03:39 AM   #820 (permalink)
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Gyronaut X-1? It was supposed to run at Bonnevile this year with a Triumph engine, but had technical difficulties. This was going to be the push car:






Wouldn't it be faster backwards? If only because it would be less likely to upset?

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