New Human Powered speed record!
09-15-13, 08:59 PM
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Insane Bicycle Mechanic
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New Human Powered speed record!
I'm just back from Battle Mountain, Nevada- if you haven't heard, Team TU-Delft/VU-Amsterdam just set a new world human-powered speed record: 83.13mph! Woo-hoo! Yippee!
(And I was manning the timing table so I got to know about the record almost before everyone else.)
https://www.hptdelft.nl/en/index.php?...blog&Itemid=58
https://jnyyz.wordpress.com/2013/09/1...s-and-banquet/
(And I was manning the timing table so I got to know about the record almost before everyone else.)
https://www.hptdelft.nl/en/index.php?...blog&Itemid=58
https://jnyyz.wordpress.com/2013/09/1...s-and-banquet/
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Jeff Wills
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09-15-13, 09:07 PM
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How the hell does the driver see???
Is that a camera in that pod on top feeding a video screen inside?
Is that a camera in that pod on top feeding a video screen inside?
09-15-13, 09:17 PM
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Insane Bicycle Mechanic
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This is the Cygnus team demo'ing their camera system at the Tuesday show 'n' shine:
https://jnyyz.wordpress.com/2013/09/1...how-and-shine/
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Last edited by Jeff Wills; 09-15-13 at 09:20 PM.
09-16-13, 06:30 AM
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The Recumbent Quant
How big are the wheels on that puppy?
09-16-13, 03:40 PM
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Old Fart In Training
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Unreal, the Chainrings must be what 100 teeth jobs ??
I guess that little hole up front is the Air Intake, mans gotta breathe right !
I guess that little hole up front is the Air Intake, mans gotta breathe right !
09-16-13, 11:32 PM
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Insane Bicycle Mechanic
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20", 406mm rims. I'm pretty sure they were using the Michelin solar car special tires, which are $125 each.
Here's a few more from my collection. I have some more to process, including a bunch of really pretty scenery.
Saturday morning:
https://www.flickr.com/photos/ohpv/se...7635578132764/
Saturday evening:
https://www.flickr.com/photos/ohpv/se...7635578290744/
Here's a few more from my collection. I have some more to process, including a bunch of really pretty scenery.
Saturday morning:
https://www.flickr.com/photos/ohpv/se...7635578132764/
Saturday evening:
https://www.flickr.com/photos/ohpv/se...7635578290744/
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Jeff Wills
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09-16-13, 11:35 PM
#7
Insane Bicycle Mechanic
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Most of the bikes are using two-stage compound drivetrains. That is, the primary uses normal size chainrings and cogs, but then an additional sprocket and cog step up the ratios so top gear is in the 300 gear-inch range.
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09-17-13, 07:24 PM
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rebmeM roineS
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My knees hurt thinking about 300 gear-inches............
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Bacchetta Giro A20, RANS V-Rex, RANS Screamer
Bacchetta Giro A20, RANS V-Rex, RANS Screamer
09-18-13, 05:29 AM
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The Recumbent Quant
Woah! I wonder what he could have done with gears. (I'm assuming he optimized his gearing for the high end, but it still must have taken it out of him getting up there.)
09-18-13, 10:41 AM
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It originally in the 230 range and he told me it was too low (stability problems at higher cadence on the bike). He swapped it up on site. 280" fixie with a linear drive. Yep, no freewheel on Beastie.
09-18-13, 10:57 AM
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The Recumbent Quant
Then maybe he should use a unicycle gears? I believe it's usually a factor of two, but works well in environments where you HAVE to be in a gear.
09-18-13, 07:08 PM
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shaken, not stirred.
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That is just insane. Yet he managed to start it without exploding his knees. very impressive.
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09-19-13, 08:49 AM
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The Recumbent Quant
09-22-13, 01:03 PM
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09-22-13, 02:06 PM
#17
Insane Bicycle Mechanic
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I shot this just before the VeloX3 entered the traps on Saturday evening. Then I had to drop the camera to push the button that captured the wind reading.
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