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Thread: Prone

  1. #1
    Sailing Cyclist
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    Prone

    Has anyone ever come up with bike frame ridden in the prone position? I only thought of this after watching human powered submarine contestants powering their U-boats laying on their bellys so that they could see forward through clear bubble nose cones.

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    Senior Member BlazingPedals's Avatar
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    It's been done, but I don't know if it's been done by anyone on this forum.

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    i've kinda considered the position (i'm more a weird bike experimenter than actual recumbent rider). i was thinking if not compleatly prone then with the front sprocket well behind the seating position, kinda like those race motorcycles. almost a gravity bike postion, but with pedals.

    truthfully for me, i couldn't see how to sit on it comfortbly. seems like it would be hard on the... uh... family jewels? so you'd need a way to have some of the weight be supported by your chest and/or stomach.

    actually the chest support occured to me while i was typing this. i may have to think on it again.

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    Senior Member bobbycorno's Avatar
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    Quote Originally Posted by Philphine View Post
    i've kinda considered the position (i'm more a weird bike experimenter than actual recumbent rider). i was thinking if not compleatly prone then with the front sprocket well behind the seating position, kinda like those race motorcycles. almost a gravity bike postion, but with pedals.

    truthfully for me, i couldn't see how to sit on it comfortbly. seems like it would be hard on the... uh... family jewels? so you'd need a way to have some of the weight be supported by your chest and/or stomach.

    actually the chest support occured to me while i was typing this. i may have to think on it again.
    Seems to me that the chest support would restrict your ability to breathe.

    SP
    Bend, OR

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    getting bent Engyo's Avatar
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    For me, the problems would consist of having to be high enough for knee clearance while pedaling, which puts COG up; and either neck or lower back problems depending on whether the body was completely horizontal or somewhat inclined. Arm position also seems somewhat problematic, depending on the steering geometry.
    Namaste, Engyo
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    Senior Member charly17201's Avatar
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    Peace. It does not mean to be in a place where there is no noise, trouble or hard work. It means to be in the midst of those things and still be calm.

    In response to bicycling being so dangerous: "We could all died today from any number of accidents. I'm not going to stop living to keep from dying." The Northern Tier by Lief Carlsen

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    rebmeM roineS JanMM's Avatar
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    WalMart will soon be offering one (online only) for $276.
    RANS V3 (steel), RANS V-Rex, RANS Screamer

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    getting bent Engyo's Avatar
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    All three of them make my neck hurt just looking at the pictures. I don't think the real one would be practical outside the track.
    Last edited by Engyo; 10-28-09 at 04:22 PM.
    Namaste, Engyo
    2008 Rans V3 - steel steed
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    Senior Member m4ximusprim3's Avatar
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    Yeah, human bodies by nature seem like they would be much better off in a recumbent position than a prone one. All of your joints are designed to flex ventrally rather than dorsally.

    I'm kinda curious as to whether you could make (even just for fun) a recumbent where the pilot was fully reclined and navigated via some sort of mirror system- it seems like you could get all the aero benefits of a prone system but still be able to breathe while riding and use your neck the next day.
    2010 CAAD 9-4/ 2010 Masi Speciale Fixed / 2009 KHS Solo-One

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    Sailing Cyclist
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    Great photo collections. Thanks. I knew someone had to have done it. Seems many.

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    Senior Member charly17201's Avatar
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    Quote Originally Posted by Old Town View Post
    Great photo collections. Thanks. I knew someone had to have done it. Seems many.
    I take no credit for these. I just remembered running across them when I was first researching going bent.
    Peace. It does not mean to be in a place where there is no noise, trouble or hard work. It means to be in the midst of those things and still be calm.

    In response to bicycling being so dangerous: "We could all died today from any number of accidents. I'm not going to stop living to keep from dying." The Northern Tier by Lief Carlsen

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    Recumbent Ninja
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    Been done and acknowledged as a vastly inferior platform to bents and df alike.

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    Senior Member shoerhino's Avatar
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    I recall seeing one on yotube.

    http://www.youtube.com/watch?v=d-akkbNyiXE

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    Insane Bicycle Mechanic Jeff Wills's Avatar
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    Quote Originally Posted by Old Town View Post
    Has anyone ever come up with bike frame ridden in the prone position? I only thought of this after watching human powered submarine contestants powering their U-boats laying on their bellys so that they could see forward through clear bubble nose cones.
    Read all about 'em:
    http://humanpower.ligfiets.net/Human...-v7n2-1988.pdf
    Jeff Wills

    All my bikes.

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    Bent builder purplepeople's Avatar
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    Quote Originally Posted by m4ximusprim3 View Post
    I'm kinda curious as to whether you could make (even just for fun) a recumbent where the pilot was fully reclined and navigated via some sort of mirror system- it seems like you could get all the aero benefits of a prone system but still be able to breathe while riding and use your neck the next day.
    Yeah, even more radical than that... the Eivie II. Rider and builder Damjan Zabrovnik has taken it to 120 kph top speed and 87.5 km over one hour. The cranks are beside the rear wheel, the rider almost lays down facing backwards and there is a mirror above him that allows forward vision.

    :)ensen.

    Those who claim to be making history are usually just repeating it.

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    Senior Member Jinker's Avatar
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    Leading with your head seems like an exceptionally bad idea from a safety standpoint.

    Just sayin'.

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    Insane Bicycle Mechanic Jeff Wills's Avatar
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    Quote Originally Posted by Jinker View Post
    Leading with your head seems like an exceptionally bad idea from a safety standpoint.

    Just sayin'.
    That's why he's encased in carbon fiber. There's some videos of his high-speed crashes at http://www.eivie.com/page/components...se/expose.html . Look for Battle Mountain 2006.
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    Administrator Allen's Avatar
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    Three Words...
    ^^^
    From the Alt Bikes forum.




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    Bent builder purplepeople's Avatar
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    What amazes me the most is that all these skilled bike builders don't do enough Web research to find out exactly what is not worth doing. With the HPV archives on the web, I wouldn't spend time and resources building something that has already been proven to have limitations, in this case, the rider will have compromised aerobic capacity.

    This kind of thing makes me wonder if recumbents are considered so "toxic" by other bike builders that they cannot be bothered to learn from the mistakes made long long ago by recumbent pioneers. They're loss, of course, but really it's just seems a waste.

    :)ensen.
    Those who claim to be making history are usually just repeating it.

    My tilting trike: Video and Images

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    Sailing Cyclist
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    Quote Originally Posted by purplepeople View Post
    What amazes me the most is that all these skilled bike builders don't do enough Web research to find out exactly what is not worth doing. With the HPV archives on the web, I wouldn't spend time and resources building something that has already been proven to have limitations, in this case, the rider will have compromised aerobic capacity.

    This kind of thing makes me wonder if recumbents are considered so "toxic" by other bike builders that they cannot be bothered to learn from the mistakes made long long ago by recumbent pioneers. They're loss, of course, but really it's just seems a waste.

    ensen.
    As a former maker of racing kayaks I think I can answer the reason why various people make the same mistakes: We all think we can tweak something old and make it better. Even if someone has failed before at it. I used to make hulls with foils to get the boat out of the water. Been done to death and does not work well under human power. But I had to try it too. It's fun. And you never know, some person just might invent a better mousetrap. I'd never discourage a bad idea. Besides, the guys who do this kind of thing are endlessly interesting to me. They fight the status quo and that is always good.

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    new guy to recumbents
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    prone link ..really,really old (pre-internet)

    I found a webpage that you will probably enjoy. The pic looks like it was long before Al Gore invented the internet.
    I also like Jeff Willis' post
    http://www.bicycleman.com/history/history.htm

    Rob

  22. #22
    Senior Member m4ximusprim3's Avatar
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    Quote Originally Posted by Jeff Wills View Post
    That's why he's encased in carbon fiber. There's some videos of his high-speed crashes at http://www.eivie.com/page/components...se/expose.html . Look for Battle Mountain 2006.
    Well then. I suppose that 1) answers my question and 2) makes me very glad I have never crashed ia giant egg going 70mph surrounded by steel tubing, chains, and splintering carbon fiber.
    2010 CAAD 9-4/ 2010 Masi Speciale Fixed / 2009 KHS Solo-One

  23. #23
    Insane Bicycle Mechanic Jeff Wills's Avatar
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    Quote Originally Posted by m4ximusprim3 View Post
    Well then. I suppose that 1) answers my question and 2) makes me very glad I have never crashed ia giant egg going 70mph surrounded by steel tubing, chains, and splintering carbon fiber.
    Try 80+:
    http://www.ohpv.org/events/albums/bm.../photo_10.html

    Typically there's a couple layers of carbon fiber and an inner layer of Kevlar to protect the soft, squishy human from shards of carbon.

    ("Shards of Carbon"... what a great name for a band!)
    Jeff Wills

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  24. #24
    Bent builder purplepeople's Avatar
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    Quote Originally Posted by Old Town View Post
    As a former maker of racing kayaks I think I can answer the reason why various people make the same mistakes: We all think we can tweak something old and make it better. Even if someone has failed before at it. I used to make hulls with foils to get the boat out of the water. Been done to death and does not work well under human power. But I had to try it too. It's fun. And you never know, some person just might invent a better mousetrap. I'd never discourage a bad idea. Besides, the guys who do this kind of thing are endlessly interesting to me. They fight the status quo and that is always good.
    Okay... fair enough.

    BTW, did you know about the Shutts? They built a number of HP hydrofoils back in the 90's. Very fast. Up on foil at about 10 knots.

    :)ensen.
    Those who claim to be making history are usually just repeating it.

    My tilting trike: Video and Images

  25. #25
    Frame Catastrophizer mikewille's Avatar
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    That guy in the photos may not care if what he built isn't worth doing from an
    efficiency standpoint, maybe it was just fun to do. Like making a tallbike.

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