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Thread: Friday fun post

  1. #1
    <3s bikes Re-Cycle's Avatar
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    Friday fun post

    Cruising ebay this morning found me a real funny auction for a new bicycle patent.

    http://cgi.ebay.com/100-MPH-High-spe...ht_1173wt_1029

    Here is the actual patent.

    http://www.google.com/patents?id=nj1...page&q&f=false

    Sure would like to see the legs that could power this to 100mph with upright bars and no streamline fairings.

    this has already been posted in the road forum apparently, don't beat me up for reposting it. I think the gear heads in this forum would appreciate the hilarity more then the roadies.
    A wild man once explained to me how bicycles came from sailboats.

  2. #2
    Elitist Troglodyte DMF's Avatar
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    Hey, free shipping !
    Stupidity got us into this mess - why can't it get us out?

    - Will Rogers

  3. #3
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    That two-stage type of gearing was used on the bike John Howard rode to a 150+mph self-propelled speed record several years ago. Of course he was riding right inside the enclosed rear fairing of a very powerful race car so, effectively, he was riding with zero air resistance. I recall the high gear being well over 300 gear-inches.

  4. #4
    Senior Member w98seeng's Avatar
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    Don't some recumbents have 120 ghears, dual cassettes? It would also be easier to pedal a recumbant faster as there is something to push against when pedaling.

  5. #5
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    Quote Originally Posted by w98seeng View Post
    Don't some recumbents have 120 ghears, dual cassettes? It would also be easier to pedal a recumbant faster as there is something to push against when pedaling.
    Yeah, intermediate two-stage gearing is nothing new and if the intermediate transfer gear is a cassette and derailleur you can have an absurd number of gears. Recumbents are faster because of their improved aerodynamics, not because you have "something to push against". All unassisted (no draft) bicycle speed records have been set using a fully faired recumbent.
    Last edited by HillRider; 05-28-11 at 06:16 AM.

  6. #6
    Chainstay Brake Mafia
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    for ten million you'd think he could afford spell check

    and it looks like he added a basically a bunch more gears.. lol
    1986 Diamondback Apex ~ 1988 Diamondback Ascent EX ~ 1989 Jamis Dakar ~ 1989 Specialized Stumpjumper Comp
    1993 Trek 8300 Composite ~ 1993 Diamondback Axis Team Titanium ~ 1995 Diamondback Apex

    Join the Chainstay Brake Mafia!

  7. #7
    Senior Member Retro Grouch's Avatar
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    All you have to do is to be able to turn the crank.

    I've been surprised at the people who think they'd be faster on a bike with bigger wheels because "you go farther with every revolution."

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    Quote Originally Posted by Retro Grouch View Post
    All you have to do is to be able to turn the crank.

    I've been surprised at the people who think they'd be faster on a bike with bigger wheels because "you go farther with every revolution."
    That was the reason for the Ordinary or Penny Farthing.

  9. #9
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    Quote Originally Posted by Retro Grouch View Post
    All you have to do is to be able to turn the crank.
    That's like J.S. Bach's description of the then newly developed piano. "There's nothing to it really. All you have to do is hit the right key at the right time and the thing plays itself."

  10. #10
    Senior Member Flying Merkel's Avatar
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    Quote Originally Posted by Re-Cycle View Post
    ......Sure would like to see the legs that could power this to 100mph with upright bars and no streamline fairings.......[/I]
    If I could get the legs required to spin the top gear on this set-up, I'd pay the $10,000,000.00 As it is, I rarely use the top gear I have.

  11. #11
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    Quote Originally Posted by w98seeng View Post
    Don't some recumbents have 120 ghears, dual cassettes? It would also be easier to pedal a recumbant faster as there is something to push against when pedaling.
    Intermediate shafts are common on recumbents, and have been since before the application date on this patent. Interestingly, your power output is lower on a recumbent (yes, that means they really are slower up hills, not just in comparison to their increased flat speeds). I was talking with Sam Whittingham about power output a couple weeks ago and the gist is that his recumbent sprint power is ~50% of his upright bike sprint power. The curves don't merge until ~ the 10 minute mark. Even taking a couple years off of road bikes and riding just recumbents didn't change that.

  12. #12
    bike whisperer Kimmo's Avatar
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    Yeah, recumbents trade biomechanical efficiency for lower drag.

    On a road bike, your torso's weight is cantilevered over the pedals via your glutes. Something to push against doesn't make up for it.

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