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  1. #1
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    Single Speed concept wire bike

    designed by Ionut Predescu






    "Most bikes make use of two back to back triangles in whatís called a diamond frame to give structure and support to all the myriad elements of a bicycle. This Wire Bike from designer Ionut Predescu instead relies on tensegrity to leverage the tensile strength of Kevlar wire against the compression strength of but two carbon fiber tubes. The end result is a theoretically lighter bicycle where the rider and his seat seems to float against the rest of the bike through the tension of the cables."


    not sure if this will work in real life.. but it sure is nice to look at.

  2. #2
    ECR Meepers's Avatar
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    i don't like the idea of a Kevlar wire being right in the nut area. someone is going to get castrated. that and the concept drawing #1 could use a little more refinement.
    [SIGPIC][/SIGPIC]
    Someone get me my brown pants!

  3. #3
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    its like an old slingshot with an extra wire...eh

  4. #4
    coasterbrakelockup lz4005's Avatar
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    Either have brakes or don't have brakes. Brake levers and lines but no calipers, discs or drums = fail.

    I hate concept bikes.
    Ride lots, have fun, skid often!

  5. #5
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    very odd indeed
    [SIGPIC][/SIGPIC]
    ********* My Fixed Gear - The fixed gear and single speed rating gallery *********
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  6. #6
    Dances With Cars TRaffic Jammer's Avatar
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    You go first....
    Oh no, you go.
    Nu-uh.


    Slingshot(as was mentioned) crossed with Trimble

  7. #7
    Packfodding 3 caloso's Avatar
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    Quote Originally Posted by lz4005 View Post
    Either have brakes or don't have brakes. Brake levers and lines but no calipers, discs or drums = fail.

    I hate concept bikes.
    Could the calipers be hidden inside the fork?
    Cyclists of the world, unite! You have nothing to lube but your chains!

  8. #8
    Dances With Cars TRaffic Jammer's Avatar
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    I'd think it would have the be in the hub somehow, if it brakes at all

  9. #9
    . bbattle's Avatar
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    Slingshot bikes aren't new:












    Another concept bike to ponder:



    and one of those "sideways" bikes:



    Looks like an Ingo knock-off:





    Treadmill bike








    Just because you can, doesn't mean you should.

  10. #10
    aka mattio queerpunk's Avatar
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    get up
    uh
    flex machine
    the hipster myth.

    i practice vagabondery.

  11. #11
    phony collective progress x136's Avatar
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    Uhh, it looks like the seat tube/crank assembly floats inside the rest of the bike. That chain tension is going to be a ***** to maintain. Extra-tight tension on the way up a bump, and then the chain falls off on the way down...

  12. #12
    Gentlemen. ADSR's Avatar
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    That main tube would get twisted apart.
    The bums will always lose.

  13. #13
    Senior Member GregLast's Avatar
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    Quote Originally Posted by dieselstation View Post
    designed by Ionut Predescu






    "Most bikes make use of two back to back triangles in whatís called a diamond frame to give structure and support to all the myriad elements of a bicycle. This Wire Bike from designer Ionut Predescu instead relies on tensegrity to leverage the tensile strength of Kevlar wire against the compression strength of but two carbon fiber tubes. The end result is a theoretically lighter bicycle where the rider and his seat seems to float against the rest of the bike through the tension of the cables."


    not sure if this will work in real life.. but it sure is nice to look at.
    Stragiht bars lacking multiple hand positions
    Cable management?
    No foot retention
    Jackass.

  14. #14
    Senior Member powerband's Avatar
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    I like concept projects, as they represent the next step in ideas that advance the world. Obviously this bike is not the final product, but without such effort in history, we'd still be pushing around (literally) a stone wheel.
    Go Hard

  15. #15
    coasterbrakelockup lz4005's Avatar
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    The problem with most concept bike pictures that end up on the internet is that they are either laughably incomplete (ie, bbattle's pic #4 with no drive train) or are not new (ie, the OP compared to bbattle's pic #1). Bad design and lack of research don't advance anything. They're just lazy.

    Ionut Predescu's design isn't a design, it is a pretty picture he drew to show that he can draw pretty pictures.
    Ride lots, have fun, skid often!

  16. #16
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    I like the concept, but it seems to me that you would need something solid between the pedals and back wheel.

  17. #17
    Riding Engineer Tomo_Ishi's Avatar
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    Hey,

    You know the engineering creed. ...

    "If it ain't broken, don't fix it."

    In this case "fixing" is enhancing(???) an already proven technology. Also, Ionut is introducing more complexity to the system which increases the number of possible failures. Do people still teach this in college?

    But then I would love to see Ionut skidding with this bike. I wonder how he deals with twisting stress. I am softy and don't know crap, but you guys told me frames twist and un-twist as you go.

    T

  18. #18
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    why are concept bikes always deisgned by people who clearly havnt ridden a bike for any amount of time or have a clue about bike design in the first place?

    becuase modern bikes are already pretty perfect. slight refinements and weight is the only real advancement in bike technology. maybe electric gears, but i really dont see much advantage in that. i didnt like it when cars became so computers controlled and covered in plastic, to the point when you cant spend an afternoon in your garage fixing it yourself from a haines manual.

    ones of the great things about bikes is being able to build and service it yourself at home.

  19. #19
    Don't smoke, Mike. shapelike's Avatar
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    I've love to see a concept bike designed by an actual cyclist for once instead of this crap everytime.

  20. #20
    aka mattio queerpunk's Avatar
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    concept bikes that exist in graphic design do absolutely nothing to further bike design. ACTUAL bikes that implement ACTUAL IDEAS represent the next step in ideas that advance the world - or at least bikes.

    :RAMPANT SPECULATION: bikes like this are made by nonbikers, nonmechanics. they're made by designers and graphic artists with little knowledge of the needs of a bike, a rider, or the industry... and little knowledge of how to fulfill it. They're just designing something that looks interesting and pleases the eyes of nonusers. Which is dumb.

    Furthermore, even deigning to provide criticism of how this drawing would ride if it were an actual bike... well, that's just as silly as it sounds, isn't it?
    the hipster myth.

    i practice vagabondery.

  21. #21
    . bbattle's Avatar
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    Quote Originally Posted by x136 View Post
    Uhh, it looks like the seat tube/crank assembly floats inside the rest of the bike. That chain tension is going to be a ***** to maintain. Extra-tight tension on the way up a bump, and then the chain falls off on the way down...

    Top and bottom cables maintain the whole diamond frame rigidity. The only new thing with his "concept" is the newer materials used in its construction. And I'll bet that if we scoured the design schools across the country, this very design has been done before as well.

    My above pic shows a bike that was actually raced in the late 1920's.

  22. #22
    Ride for Life wearyourtruth's Avatar
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    anyone have any idea what that 2nd cable coming off the right brake lever is? mind controlled internal hub shifter?
    before posting, a "noob" should always ask themselves "could this have been answered by first visiting Sheldon Brown

    -Tim-
    www.velocipedebikeproject.org

  23. #23
    Dances With Cars TRaffic Jammer's Avatar
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    Bar mounted internal air pressure system, Twist and Pump

  24. #24
    Perineal Pressurized dobber's Avatar
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    Quote Originally Posted by GregLast View Post
    Stragiht bars lacking multiple hand positions
    Cable management?
    No foot retention
    Jackass.
    Thanks for posting the photos again, if it weren't for that I wouldn't have know what you were replying too.
    This is Africa, 1943. War spits out its violence overhead and the sandy graveyard swallows it up. Her name is King Nine, B-25, medium bomber, Twelfth Air Force. On a hot, still morning she took off from Tunisia to bomb the southern tip of Italy. An errant piece of flak tore a hole in a wing tank and, like a wounded bird, this is where she landed, not to return on this day, or any other day.

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