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New wheel concept
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steve lubanski
Aug 26, 08 0:26
Post #1 of 71 (2707 views)
New wheel concept
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I have developed a new wheel design which uses four spokes and eight cables. I beleive it is very aero especially in dealing with side winds. My question to anybody is who, or which wind tunnel would be the best to test a wheel design at different yaw angles.
Steve
SMp
GregX
Aug 26, 08 5:16
Post #2 of 71 (2607 views)
Re: New wheel concept [steve lubanski]
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if this wheel is truly aero and you wanted to save some money in the initial testing, you could probably do some very good testing with a known closed course, a consistent rider, an accurate powermeter, and some good data analysis.
"Half of what we taught you is wrong. Unfortunately, we do not know which half."
-- Dean and cardiologist C. S. Burwell to a Harvard Med School graduating class.
Where would
you
want to swim ?
kristiancyclist
Aug 26, 08 6:42
Post #3 of 71 (2461 views)
Re: New wheel concept [steve lubanski]
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Aero or not, you should patent the design first before you disclose any more information on it. Once it becomes public domain here, you lose all rights to it (except bragging rights that is).
-- Boris
jyeager
Aug 26, 08 7:05
Post #4 of 71 (2416 views)
Re: New wheel concept [steve lubanski]
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Why do you use spokes? Why not 12 cables?
one_lap
Aug 26, 08 7:29
Post #5 of 71 (2369 views)
Re: New wheel concept [kristiancyclist]
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That's not true, but mr. lubanski would still be well served to contact some reputable patent counsel.
triguy42
Aug 26, 08 8:50
Post #6 of 71 (2280 views)
Re: New wheel concept [steve lubanski]
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I would contact Kirk or Kraig Willett over at Biketechreview.com for info on tunnel testing. They run a reputable shop and have tested with some of the world's best cyclists. There are other tunnels across the US (in North Carolina? and Denver? and Texas) that do the same kind of work.
Charter Member -
HED Mafia
steve lubanski
Aug 26, 08 18:40
Post #7 of 71 (2151 views)
Re: New wheel concept [jyeager]
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The four spokes and are tubular carbon and radiate from the ctr of the hub. The eight cables do tension, and keep the wheel straight. To my knowledge, which is limited, this is a first for a wheel. Two types of structures in perfect harmony. Just like a suspension bridge.
Steve SMp
Learn
Aug 26, 08 22:43
Post #8 of 71 (2055 views)
Re: New wheel concept [steve lubanski]
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Picture?
In my head, it doesn't sound very aero at all.
Local Star
Aug 26, 08 23:01
Post #9 of 71 (2042 views)
Re: New wheel concept [Learn]
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Yes, picture, drawings, blueprints, materials and molds...
..................................................................................
Silverman 1/2 Distance: November 9th 2008
Swim with drive, Ride with passion, Run with heart...
If you can't do that, don't toe up the start.
jyeager
Aug 27, 08 7:12
Post #10 of 71 (1930 views)
Re: New wheel concept [steve lubanski]
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Usually all 'spokes' in a wheel provide tension. Are your tubular carbon 'spokes' under compression?
paul@hellovelo
Aug 27, 08 10:04
Post #11 of 71 (1870 views)
Re: New wheel concept [steve lubanski]
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If this is real, go show John Cobb. You can contact him by calling Blackwell Research.
p.
------------------------
Padyak Pinoy in 2009?
hellovelo.ca
sjudice
Aug 27, 08 11:31
Post #12 of 71 (1801 views)
Re: New wheel concept [paul@hellovelo]
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If this is real, go show John Cobb. You can contact him by calling Blackwell Research.
p.
Why would he want to show John Cobb?
____________________________________________
Genius is recognizing when you are damn lucky
J\V
Aug 27, 08 12:24
Post #13 of 71 (1738 views)
Re: New wheel concept [steve lubanski]
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In Reply To
The four spokes and are tubular carbon and radiate from the ctr of the hub. The eight cables do tension, and keep the wheel straight. To my knowledge, which is limited, this is a first for a wheel. Two types of structures in perfect harmony. Just like a suspension bridge.
Steve SMp
Have you mounted this wheel on a bike and ridden it yet, and/or are you sure it won't simply fold up when you load it? I'm trying to visualize how those cables provide tension in the correct plane...
:)
__________________________________________________
My $0.02 in a world where pennies are obsolete...
gatorFL
Aug 27, 08 12:35
Post #14 of 71 (1718 views)
Re: New wheel concept [steve lubanski]
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Isn't the Mavic R-Sys made with tubular carbon spokes.....that explode?
jrennie
Aug 27, 08 12:37
Post #15 of 71 (1713 views)
Re: New wheel concept [gatorFL]
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Isn't a thin round object like a cable less aero than a foiled shape?
steve lubanski
Aug 27, 08 20:18
Post #16 of 71 (1591 views)
Re: New wheel concept [Learn]
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With a total of 12 members between the hub and rim it is very very aero.
Steve SMp
steve lubanski
Aug 27, 08 20:22
Post #17 of 71 (1584 views)
Re: New wheel concept [jyeager]
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My four tubular carbon spokes radiate from the CENTER of the hub out in a cross pattern. From a frontal veiw they hid behind the rim all the way from hub to rim. The only spokes getting air are the eight, four on each side. What makes this wheel truly unique is even with heavy crosswinds. the front wheel is very very stable.
Steve SMp
steve lubanski
Aug 27, 08 20:25
Post #18 of 71 (1574 views)
Re: New wheel concept [paul@hellovelo]
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No disrespect to Mr. Cobb, but what I usually find with people who have their own concepts and ideas, is the attitude of Not of this house.
Steve SMp
steve lubanski
Aug 27, 08 20:30
Post #19 of 71 (1565 views)
Re: New wheel concept [J\V]
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One must try to think out of the box. Wheel technology has been stuck using one type of spoke or cable or blade for the whole wheel. What I have done is mixed to completly different materials to obtain optimum results. Again just like a suspension bridge, compression and tension in harmony.
Steve SMp
steve lubanski
Aug 27, 08 20:33
Post #20 of 71 (1554 views)
Re: New wheel concept [jrennie]
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It may be less aero if all you do is think of straight ahead. One of my main concerns was to develop a wheel that could be ridden in heavy crosswinds. on aero bars, with full confidence.
Steve SMp
steve lubanski
Aug 27, 08 20:47
Post #21 of 71 (1532 views)
Re: New wheel concept [J\V]
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Just got done riding 30k on it. For the last eight years I have been using preproduction four spoke Stella Azurre wheels. Some of the fastest wheels out there, but very scary in side winds. Ended up using one gear higher than normal on a ride that I have done several hundred times. But then again I do not know if Mr. Placebo got invited.
Steve SMp
steve lubanski
Aug 27, 08 21:23
Post #22 of 71 (1498 views)
Re: New wheel concept [J\V]
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Regular spokes or cables are tension only.
Steve SMp
steve lubanski
Aug 27, 08 21:31
Post #23 of 71 (1481 views)
Re: New wheel concept [Learn]
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HERE IT IS!
http://www.sidemountpedal.com/smp_latest.html
GregX
Aug 27, 08 22:00
Post #24 of 71 (1451 views)
Re: New wheel concept [steve lubanski]
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Steve, aerodynamic or not, unless you use an absolutely massive rim, i think you'll have one big problem with this type of wheel design: this wheel will not stay round as the miles and potholes pile up. sure, the forces may be in 'perfect balance', but that will necessarily mean that the rim will to be not be perfectly round. and maybe this drawing of steve's wheel will show up:
"Half of what we taught you is wrong. Unfortunately, we do not know which half."
-- Dean and cardiologist C. S. Burwell to a Harvard Med School graduating class.
Where would
you
want to swim ?
(This post was
edited
by GregX on Aug 28, 08 8:40)
steve lubanski
Aug 27, 08 22:03
Post #25 of 71 (1445 views)
Re: New wheel concept [GregX]
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I am not saying it is a training wheel. Take any full carbon rim, hit a nice pothole, and then tell me how it held up. By the way, this first edition weighs in at 620 grams.
Steve Smp
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