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jnyyz
recumbent enthusiast

Canada
265 Posts

Posted - 06/15/2012 :  06:50:27  Show Profile  Visit jnyyz's Homepage  Reply with Quote
quote:
Originally posted by Speedbiker

Two at a time(1/2 serious)? Wouldn't you think after all these years they would repave Muleshoe....... Al will figure it out.



the speed runs already run with multiple vehicles on the 5 miles at a time, up to three if I remember correctly.


http://jnyyz.wordpress.com/
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LongJohn
recumbent guru

Netherlands
580 Posts

Posted - 06/15/2012 :  06:58:53  Show Profile  Visit LongJohn's Homepage  Reply with Quote
Which sometimes results in dangerous situations already...
This is me overtaking Eric's chase just after the finish in the right lane, after which I overtook Eric in the left lane....

http://www.youtube.com/watch?v=bMwAUBFf2Ak&feature=youtube_gdata_player

Thomas
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Speedbiker
human power expert

USA
2438 Posts

Posted - 06/15/2012 :  07:25:47  Show Profile  Reply with Quote
Thomas is very brave. I meant side by side launch. Vehicles of similar speed. Chase vehicle stay behind slower hpv. Just a (probably poor) idea. Is there no other non305 smooth qualifying road?
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Speedy
recumbent guru

USA
756 Posts

Posted - 06/15/2012 :  08:54:25  Show Profile  Reply with Quote
Too many bikes and riders
a truly wonderful problem to have
imagine ... all this turn out with no prize monies
could it get any better ?
yes
better would be bumping the top speed up a few MPH
fingers crossed for excellent weather
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Larry Lem
human power expert

South Sandwich Islands
2288 Posts

Posted - 06/15/2012 :  08:59:07  Show Profile  Reply with Quote
48 potential combinations
I removed 10 as possible no-shows/not ready for Mon morning.
I grouped bike-rider combinations into groups of 5.
I only allowed each bike to be qualified a maximum of 2 times despite some needing 3 or 4 runs for 3 or 4 riders.

They "almost" fit into 6 groups.

Yes, we'll be hard-pressed to run 6 groups of 5 in Mon morning qualifying on 305.

We wanted this sport to grow, now we have to deal with it.

Larry Lem
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Speedbiker
human power expert

USA
2438 Posts

Posted - 06/15/2012 :  09:11:27  Show Profile  Reply with Quote
Years ago we thought it would get so big as to need prequalifying just to compete. We may almost be there. In the event it seems necessary, I am all for it. It would raise the level of the event if every bike was proven, ready, and fast. Realize this is being said by one of the great last minute thrashers. BM was created as a venue for breaking records. If some day they only allow the fastest 20 prequalifiers, and I am too slow, too bad for me. I'd better raise my game. I can't imagine Varna, Delft, Eiviestretto, etc having a problem with prequalifying. Maybe next year...
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warren
human power expert

4859 Posts

Posted - 06/15/2012 :  09:46:25  Show Profile  Visit warren's Homepage  Reply with Quote
Muleshoe is like riding on course gravel. My eyeballs got vibrated out of their sockets last time I qualified on that road and it took a while to find them.

Make people arrive on Saturday and do weekend qualification runs?

Run 2 mile qualification runs in two directions out from center of course (yeah one group gets to go upgrade)?

Right now we do 2 - 15 minute road closings, right? Maybe step up to 3 to allow more bikes to run?

-Warren.

Edited by - warren on 06/15/2012 10:03:01
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jnyyz
recumbent enthusiast

Canada
265 Posts

Posted - 06/15/2012 :  09:55:13  Show Profile  Visit jnyyz's Homepage  Reply with Quote
Larry, Warren,

want to move this discussion over to a new thread, so that it doesn't hijack the build thread? Sorry for playing a part in hijacking the thread. BTW I did send a note to the U of T team (before Victor's latest post) saying that showing up with three bikes and a lot of riders would not be the best idea this year, but they don't have to take my advice; I'm just their adviser.

Jun

http://jnyyz.wordpress.com/
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Alan Krause
recumbent guru

591 Posts

Posted - 06/16/2012 :  11:31:49  Show Profile  Reply with Quote
I have invited the Russian Team, The bike "Bowstring" built by Veniamin Ulyanovsky for racer Sergey Dashevsky. They expressed interest in participation, we will see if they can get here...
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warren
human power expert

4859 Posts

Posted - 06/16/2012 :  19:30:55  Show Profile  Visit warren's Homepage  Reply with Quote
Al sent these pictures of the "Bowstring:





-Warren

Edited by - warren on 06/16/2012 19:32:16
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Speedbiker
human power expert

USA
2438 Posts

Posted - 06/16/2012 :  20:40:36  Show Profile  Reply with Quote
Is it prone or something different? Looks like it has a wide spot near the back.
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Alan Krause
recumbent guru

591 Posts

Posted - 06/16/2012 :  20:54:08  Show Profile  Reply with Quote
I don't know any more about it.
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Juanjo Vaucelles
Starting Member

Argentina
27 Posts

Posted - 06/16/2012 :  21:58:08  Show Profile  Reply with Quote
quote:
Originally posted by Speedbiker

Is it prone or something different? Looks like it has a wide spot near the back.


It's not a prone bike. They are using dual 451 wheels and possibly 170s cranks. Fairing size - 100 inches long, 16 inches wide, 26 inches high.




There are lots of pictures here:
http://imgsrc.ru/1949/27714095.html

Is it possible to ride an streamliner like this at high speed without side windows?
Thom, Larry, some experience to share...?

Juanjo Vaucelles

Edited by - Juanjo Vaucelles on 06/16/2012 22:05:59
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Speedbiker
human power expert

USA
2438 Posts

Posted - 06/16/2012 :  22:36:09  Show Profile  Reply with Quote
Our man in South America comes through! Thanks, buddy. Don't need side windows for balance, but they help see the edge of the road. Their vision is going to be very limited, and I would know. They will be looking their their frame, drivetrain, and moving legs and feet. No fun, but possible in a straight line. Thanks again Juanjo.
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Larry Lem
human power expert

South Sandwich Islands
2288 Posts

Posted - 06/17/2012 :  13:39:29  Show Profile  Reply with Quote
Cool bike!
I'm building another nose windshield bike this year and was briefly debating on installing side windows as I'm not convinced that they help that much for balance, etc., (I would want to try a run without them to find out, but haven't done that). But then I recalled that we fogged the windshield last year at Battle Mountain part way down the course and relied on the side windows to complete the run. They are indispensable as a back-up system.
Anti-fog solutions (or systems) are also needed for humid mornings.

Larry Lem
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Juanjo Vaucelles
Starting Member

Argentina
27 Posts

Posted - 06/17/2012 :  17:51:17  Show Profile  Reply with Quote
Thanks Larry and Thom, I have another question. Instead of a camera mounted on top of the bike or a two mirror periscope system, has anyone tried using a pair of fiber optic scopes?
If nobody has tried it yet, I should buy one and start playing with it...
http://www.advanced-intelligence.com/optics.html



I was thinking to use one optic scope per eye attached to a pair of goggles and the other ends mounted on top of the fairing. They might provide good vision as you can see near or far.

Juanjo Vaucelles
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Garrie L Hill
human power supergeek

USA
1448 Posts

Posted - 06/17/2012 :  19:05:32  Show Profile  Reply with Quote
Juanjo;
Most of the fiber optic borescopes ( which I think you are referring too ) are for interior inspection of enclosed spaces. As such, they have limited depth of field. You might want to check on this before purchasing. I looked into this several years back, with no luck. It wouldn't be much good to only see as far as the front of the fairing.

Garrie "carbon based lifeform" Hill
HPRA Co-Dictator of the East
for pics of some of my time and money sucking projects
http://garriehill.winkflash.com/
and
http://s58.photobucket.com/albums/g277/cfbb/
and videos
http://vimeo.com/5513519


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legslarry
recumbent enthusiast

United Kingdom
324 Posts

Posted - 06/18/2012 :  04:49:31  Show Profile  Visit legslarry's Homepage  Reply with Quote
quote:
Originally posted by Speedbiker
I meant side by side launch. Vehicles of similar speed. Chase vehicle stay behind slower hpv. Just a (probably poor) idea.



Te tape switches for the current IHPVA timing system only stretch halfway across the road. I don't know whether Garrie's optical system can cope with having two vehicles in the 200 simultaneously.

Dave Larrington
http://www.legslarry.beerdrinkers.co.uk/
=============================
a bit ov a lyv wyr by slof standirds
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Garrie L Hill
human power supergeek

USA
1448 Posts

Posted - 06/18/2012 :  08:18:24  Show Profile  Reply with Quote
My system ( optical trap/radio link) can handle a trap width of 150 feet and a broadcast range to the home timer system of five miles. I normally have it programmed for FIFO. In other words, First In First Out. The system assumes that the first racer to trip the system at the start of the traps will be the first to trip the finish, and so on. Also, the trap transmitters do not need to be "taken up" between sessions like the tape trips do.

Garrie "carbon based lifeform" Hill
HPRA Co-Dictator of the East
for pics of some of my time and money sucking projects
http://garriehill.winkflash.com/
and
http://s58.photobucket.com/albums/g277/cfbb/
and videos
http://vimeo.com/5513519


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hptdelft
New Member

Netherlands
81 Posts

Posted - 06/18/2012 :  09:48:33  Show Profile  Visit hptdelft's Homepage  Reply with Quote
Yes we have tried this (experimented a bit with a simple fibre optic system).
The resolution (nr of fibres) on entry level borescopes is way to low to ride a bike. Also the large angle lens (suited for confined spaces) makes everything seem very far away (even though you are standing right in front of it).

You could have a custom high quality (higher resolution) one made with a more suitable viewing angle. We were quoted something like 5000 euros for having such a system made. That would be just to try if it even works (resolution is still doubtfull).
Also constantly wearing an eyepiece is very uncomfortable

End of story: camera + screen system is much better. It's cheap, easily customizable (camera lens angles etc), and it works very well.

quote:
Originally posted by Juanjo Vaucelles

Thanks Larry and Thom, I have another question. Instead of a camera mounted on top of the bike or a two mirror periscope system, has anyone tried using a pair of fiber optic scopes?
If nobody has tried it yet, I should buy one and start playing with it...
http://www.advanced-intelligence.com/optics.html



I was thinking to use one optic scope per eye attached to a pair of goggles and the other ends mounted on top of the fairing. They might provide good vision as you can see near or far.

Juanjo Vaucelles



-------------------------
Yeah yeah, banana custard.
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Jeff Wills
human power supergeek

USA
1209 Posts

Posted - 06/18/2012 :  17:32:18  Show Profile  Visit Jeff Wills's Homepage  Reply with Quote
quote:
Originally posted by warren

Al sent these pictures of the "Bowstring:



-Warren



Ooh... pretty.

Although I wonder about the connection between the clear windscreen and the rest of the body shell. It seems to me that it's nearly impossible to make that transition smooth enough. That is, it's going to trip the boundary layer right where pressure is highest, leading to more turbulent flow across the majority of the upper shell.

__________________
Jeff Wills
All my bikes:
http://home.comcast.net/~jeff_wills/Gallery/index.html
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W Hilgenberg
recumbent enthusiast

USA
284 Posts

Posted - 06/18/2012 :  17:54:18  Show Profile  Reply with Quote
It shouldn't be big enough to cause separation. That being said, it is a very very pretty bike. I really need to finish mine. . .
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Speedbiker
human power expert

USA
2438 Posts

Posted - 06/18/2012 :  18:13:15  Show Profile  Reply with Quote
Gosh Larry, never heard of laminar flow? Ha ha.
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Velofellow
New Member

USA
77 Posts

Posted - 06/19/2012 :  15:28:33  Show Profile  Reply with Quote
Interesting Blog post about todays VeloX2 unveiling.

http://wimschermer.blogspot.com/

Greg

Carbon Quest QB037
Varna Mephisto
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Patrick Bateman
Starting Member

USA
24 Posts

Posted - 06/20/2012 :  09:18:39  Show Profile  Visit Patrick Bateman's Homepage  Reply with Quote
quote:
Originally posted by Velofellow

Interesting Blog post about todays VeloX2 unveiling.

http://wimschermer.blogspot.com/

Greg

Carbon Quest QB037
Varna Mephisto



Wow looks fast!
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