Cycling and bicycle discussion forums. 
   Click here to join our community Log in to access your Control Panel  


Go Back   > >

Recumbent What IS that thing?! Recumbents may be odd looking, but they have many advantages over a "wedgie" bicycle. Discuss the in's and out's recumbent lifestyle in the recumbent forum.

User Tag List

Reply
 
Thread Tools Search this Thread
Old 09-15-13, 08:59 PM   #1
Jeff Wills
Insane Bicycle Mechanic
Thread Starter
 
Jeff Wills's Avatar
 
Join Date: Mar 2008
Location: other Vancouver
Bikes:
Posts: 7,983
Mentioned: 1 Post(s)
Tagged: 0 Thread(s)
Quoted: 24 Post(s)
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.)

http://www.hptdelft.nl/en/index.php?...blog&Itemid=58

http://jnyyz.wordpress.com/2013/09/1...s-and-banquet/

__________________
Jeff Wills

Comcast nuked my web page. It will return soon..
Jeff Wills is offline   Reply With Quote
Old 09-15-13, 09:07 PM   #2
Shimagnolo
Senior Member
 
Shimagnolo's Avatar
 
Join Date: May 2008
Location: Zang's Spur, CO
Bikes:
Posts: 7,568
Mentioned: 1 Post(s)
Tagged: 0 Thread(s)
Quoted: 170 Post(s)
How the hell does the driver see???
Is that a camera in that pod on top feeding a video screen inside?
Shimagnolo is offline   Reply With Quote
Old 09-15-13, 09:17 PM   #3
Jeff Wills
Insane Bicycle Mechanic
Thread Starter
 
Jeff Wills's Avatar
 
Join Date: Mar 2008
Location: other Vancouver
Bikes:
Posts: 7,983
Mentioned: 1 Post(s)
Tagged: 0 Thread(s)
Quoted: 24 Post(s)
Quote:
Originally Posted by Shimagnolo View Post
How the hell does the driver see???
Is that a camera in that pod on top feeding a video screen inside?
Exactly. There are two separate camera systems. Redundancy is a safety requirement for camera bikes and trikes at Battle Mountain.

This is the Cygnus team demo'ing their camera system at the Tuesday show 'n' shine:

http://jnyyz.wordpress.com/2013/09/1...how-and-shine/

__________________
Jeff Wills

Comcast nuked my web page. It will return soon..

Last edited by Jeff Wills; 09-15-13 at 09:20 PM.
Jeff Wills is offline   Reply With Quote
Old 09-16-13, 06:30 AM   #4
cplager
The Recumbent Quant
 
cplager's Avatar
 
Join Date: Jan 2012
Location: Norwalk, CT
Bikes: 2012 Cruzbike Sofrider, 2013 Cruzigami Mantis
Posts: 3,018
Mentioned: 0 Post(s)
Tagged: 0 Thread(s)
Quoted: 0 Post(s)
How big are the wheels on that puppy?
cplager is offline   Reply With Quote
Old 09-16-13, 03:40 PM   #5
osco53
Old Fart In Training
 
osco53's Avatar
 
Join Date: Oct 2012
Location: Central Florida
Bikes: Trek CrossRip 3, Easy Racer Tour Easy LE,Sun EZ-3, Scott Spark 760 2014 Dahon Speed P8
Posts: 2,087
Mentioned: 0 Post(s)
Tagged: 0 Thread(s)
Quoted: 12 Post(s)
Unreal, the Chainrings must be what 100 teeth jobs ??

I guess that little hole up front is the Air Intake, mans gotta breathe right !
osco53 is offline   Reply With Quote
Old 09-16-13, 11:32 PM   #6
Jeff Wills
Insane Bicycle Mechanic
Thread Starter
 
Jeff Wills's Avatar
 
Join Date: Mar 2008
Location: other Vancouver
Bikes:
Posts: 7,983
Mentioned: 1 Post(s)
Tagged: 0 Thread(s)
Quoted: 24 Post(s)
Quote:
Originally Posted by cplager View Post
How big are the wheels on that puppy?
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:
http://www.flickr.com/photos/ohpv/se...7635578132764/

Saturday evening:
http://www.flickr.com/photos/ohpv/se...7635578290744/
__________________
Jeff Wills

Comcast nuked my web page. It will return soon..
Jeff Wills is offline   Reply With Quote
Old 09-16-13, 11:35 PM   #7
Jeff Wills
Insane Bicycle Mechanic
Thread Starter
 
Jeff Wills's Avatar
 
Join Date: Mar 2008
Location: other Vancouver
Bikes:
Posts: 7,983
Mentioned: 1 Post(s)
Tagged: 0 Thread(s)
Quoted: 24 Post(s)
Quote:
Originally Posted by osco53 View Post
Unreal, the Chainrings must be what 100 teeth jobs ??

I guess that little hole up front is the Air Intake, mans gotta breathe right !
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.
__________________
Jeff Wills

Comcast nuked my web page. It will return soon..
Jeff Wills is offline   Reply With Quote
Old 09-17-13, 07:24 PM   #8
JanMM
rebmeM roineS
 
JanMM's Avatar
 
Join Date: Jan 2006
Location: In Central IN
Bikes: RANS V3, RANS V-Rex, RANS Screamer
Posts: 13,405
Mentioned: 0 Post(s)
Tagged: 0 Thread(s)
Quoted: 32 Post(s)
Quote:
Originally Posted by Jeff Wills View Post
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.
Great pics.
My knees hurt thinking about 300 gear-inches............
__________________
RANS V3 - Ti, RANS V-Rex - cromo, RANS Screamer - cromo
JanMM is offline   Reply With Quote
Old 09-17-13, 08:03 PM   #9
Jeff Wills
Insane Bicycle Mechanic
Thread Starter
 
Jeff Wills's Avatar
 
Join Date: Mar 2008
Location: other Vancouver
Bikes:
Posts: 7,983
Mentioned: 1 Post(s)
Tagged: 0 Thread(s)
Quoted: 24 Post(s)
Quote:
Originally Posted by JanMM View Post
Great pics.
My knees hurt thinking about 300 gear-inches............
Think about this: Graeme Obree's prone "Beastie" was a single-speed, and he powered it up to 57mph.
__________________
Jeff Wills

Comcast nuked my web page. It will return soon..
Jeff Wills is offline   Reply With Quote
Old 09-17-13, 08:47 PM   #10
rm -rf
don't try this at home.
 
rm -rf's Avatar
 
Join Date: Jan 2006
Location: N. KY
Bikes:
Posts: 3,737
Mentioned: 0 Post(s)
Tagged: 0 Thread(s)
Quoted: 66 Post(s)
found another video.

rm -rf is offline   Reply With Quote
Old 09-18-13, 05:29 AM   #11
cplager
The Recumbent Quant
 
cplager's Avatar
 
Join Date: Jan 2012
Location: Norwalk, CT
Bikes: 2012 Cruzbike Sofrider, 2013 Cruzigami Mantis
Posts: 3,018
Mentioned: 0 Post(s)
Tagged: 0 Thread(s)
Quoted: 0 Post(s)
Quote:
Originally Posted by Jeff Wills View Post
Think about this: Graeme Obree's prone "Beastie" was a single-speed, and he powered it up to 57mph.
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.)
cplager is offline   Reply With Quote
Old 09-18-13, 10:41 AM   #12
delcrossv 
Senior Member
 
delcrossv's Avatar
 
Join Date: Nov 2011
Location: Scalarville
Bikes:
Posts: 1,459
Mentioned: 0 Post(s)
Tagged: 0 Thread(s)
Quoted: 0 Post(s)
Quote:
Originally Posted by cplager View Post
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.)
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.
__________________
Lightning P-38 / M5 M-Racer/Ryan Vanguard
delcrossv is offline   Reply With Quote
Old 09-18-13, 10:57 AM   #13
cplager
The Recumbent Quant
 
cplager's Avatar
 
Join Date: Jan 2012
Location: Norwalk, CT
Bikes: 2012 Cruzbike Sofrider, 2013 Cruzigami Mantis
Posts: 3,018
Mentioned: 0 Post(s)
Tagged: 0 Thread(s)
Quoted: 0 Post(s)
Quote:
Originally Posted by delcrossv View Post
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.
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.
cplager is offline   Reply With Quote
Old 09-18-13, 07:08 PM   #14
gnome 
shaken, not stirred.
 
gnome's Avatar
 
Join Date: Aug 2006
Location: The Shaky Isles.
Bikes: I've lost count.
Posts: 2,961
Mentioned: 0 Post(s)
Tagged: 0 Thread(s)
Quoted: 6 Post(s)
Quote:
Originally Posted by delcrossv View Post
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.
That is just insane. Yet he managed to start it without exploding his knees. very impressive.
__________________
Get a bicycle. You will not regret it if you live. ~Mark Twain, "Taming the Bicycle"
vBulletin: snafu
gnome is offline   Reply With Quote
Old 09-19-13, 08:49 AM   #15
cplager
The Recumbent Quant
 
cplager's Avatar
 
Join Date: Jan 2012
Location: Norwalk, CT
Bikes: 2012 Cruzbike Sofrider, 2013 Cruzigami Mantis
Posts: 3,018
Mentioned: 0 Post(s)
Tagged: 0 Thread(s)
Quoted: 0 Post(s)
Quote:
Originally Posted by gnome View Post
That is just insane. Yet he managed to start it without exploding his knees. very impressive.
I assume he got a push (as most people riding bikes like this do). Even so, you're point is right on the money.
cplager is offline   Reply With Quote
Old 09-22-13, 01:03 PM   #16
BlazingPedals
Senior Member
 
BlazingPedals's Avatar
 
Join Date: Dec 2004
Location: Middle of da Mitten
Bikes: Trek 7500, RANS V-Rex, Optima Baron, Velokraft NoCom, M-5 Carbon Highracer, homebuilt recumbent
Posts: 8,944
Mentioned: 1 Post(s)
Tagged: 0 Thread(s)
Quoted: 103 Post(s)
Quote:
Originally Posted by rm -rf View Post
found another video.

Video clips were taken at different times. (Different shadowing for each clip.) That's not surprising, but I wonder if one of them was actually taken on the record-breaking run?
BlazingPedals is offline   Reply With Quote
Old 09-22-13, 02:06 PM   #17
Jeff Wills
Insane Bicycle Mechanic
Thread Starter
 
Jeff Wills's Avatar
 
Join Date: Mar 2008
Location: other Vancouver
Bikes:
Posts: 7,983
Mentioned: 1 Post(s)
Tagged: 0 Thread(s)
Quoted: 24 Post(s)
Quote:
Originally Posted by BlazingPedals View Post
Video clips were taken at different times. (Different shadowing for each clip.) That's not surprising, but I wonder if one of them was actually taken on the record-breaking run?

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.

__________________
Jeff Wills

Comcast nuked my web page. It will return soon..
Jeff Wills is offline   Reply With Quote
Reply


Thread Tools Search this Thread
Search this Thread:

Advanced Search

Posting Rules
You may not post new threads
You may not post replies
You may not post attachments
You may not edit your posts

BB code is On
Smilies are On
[IMG] code is On
HTML code is Off



All times are GMT -6. The time now is 02:10 AM.