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  1. #26
    derailleurs are overrated bigbenaugust's Avatar
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    Would an elephant work?
    --Ben
    Carrboro Bike Coalition - putting the "bike" in "CARrboro" :)
    2011 Motobecane Fantom Cross Uno, 2009 Motobecane Fantom CX
    Previously: 2000 Trek 4500 (2000-2003), 2003 Novara Randonee (2003-2006), 2003 Giant Rainier (2003-2008), 2005 Xootr Swift (2005-2007), 2007 Nashbar 1x9 (2007-2011), 2011 Windsor Shetland (2011-2014)
    Current Linux Usage (by machine): Arch: I openSUSE: III

  2. #27
    Senior Member SmallFront's Avatar
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    Three wheels - two at the front, one at the rear. Low seating position. Tall wheels with a tilting mechanism for the turns.
    Three wheels, because that means all three will most likely touch at all times. Steering both front and back.

    A powerful electric motor in each wheel = three motors. If going slowly, it should only use a single motor.
    Include intelligent traction control, sort of a locked diff, so it won't leave you "hanging".


    Battery? Well, I was thinking a very, very small set of LiFePo4 batteries, but only enough for an hour or two at low speeds.

    For anything else, you employ the rear-mounted "generator", which could be a miniature turbo-prop (i.e. gas turbine) used as a generator, so the batteries will only function as a way to deliver exact power to the motors, and to use if you go into a shop:


    http://www.jetcatusa.com/spt5.htm

    Yes, it runs on Jet A1 - turn up the volume, but do not use headphones:



    Obviously, you wouldn't attach a propeller, but a pretty good alternator instead.

    Additional, I think you should have hydraulics (or electric) to move you up or down - like this:

    Last edited by SmallFront; 08-18-14 at 12:02 PM. Reason: Added some more of my thoughts

  3. #28
    Nobody mconlonx's Avatar
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    I know next to nothing. I am frequently wrong.

  4. #29
    Trek 500 Kid Zinger's Avatar
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    I'm thinking a 100 hp Mercury outboard with a model A radiator here.

    My uncle, who used to race super modified fuelers in Albuquerque, built a go kart with that setup once.....quite frightening actually.
    "I never lost a race because my bike was too heavy".......George Mount

  5. #30
    Insane Bicycle Mechanic Jeff Wills's Avatar
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    Quote Originally Posted by Tom Stormcrowe View Post
    I want original Foo Designs, folks! This is a fun thread to stir creative juices and allow me to exercise my sense of humor. Hyperdrives, SF stuff, anything goes. Antigrav wold be cool, too. Oh, and make it fast enough that I can create a sonic boom if I want.

    Have fun with this and give me your best Foo Crazy ideas! Like I said, free Ti for the best three concepts, as judged by my staff.
    Fer cryin' out loud, Tom, there isn't anything original any more! I was going to suggest a robotic Sasquatch suit powered by a nukular reactor, but then I remembered they did that in an episode of The Six Million Dollar Man...

    Here's a recumbent quad a friend of mine bought. Get it with an electric assist and a *** mount and you're in:
    Utah Trikes - Army Green Quad


    Jeff Wills

    All my bikes.

  6. #31
    Burning Matches. ElJamoquio's Avatar
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    If it was me, and I know I'm taking this too seriously... for fun, I would do a segway type wheelchair. The only problem is I'm too lackadaisical with my code and I'd end up falling on my face. But it would work. The second time.

    Anyway I'd get a bunch of 18650's for power, throw them into a battery pack under the chair. Batteries are cheap, motors are cheap. Heck you could even just buy a raspberry pi and blammo. Throw some 29'r wheels on electric hubs. This is all off the shelf stuff except for the software in the pi. If you want me to build the wheels (complimentary, of course) for you let me know. With two powered hubs you could seriously hurt yourself with the speed you could reach. Most of my coworkers worked at Tripath - they made FETs that would fail when the solder melted. Use silver solder. The motors can take a lot of voltage, some people go over 100 MPH on a bicycle... with one hub, and you'd have two, and maybe double the required FET's. How fast do YOU want to go? How fast do you want to drag out that deer? Heck we could rig up a fold-out rack in the back for your elk, or string up a pulley system and let it hang (strap it down, of course, too, to control it horizontally).

    For my version one I'd just have straight 29'r wheels (with auxilliary balance wheel I could fold away) with no suspension. Disc brakes for the muddy portions. For version 2 I'd throw in a suspension - probably mcpherson strut type suspension to keep the width of the chair to a minimum.

    Heck I'm thinking about building this for myself now. Really.

    This is a realistic project for the technically inclined with time on their hands. Oh hey, that's you!


    48V 350W E Bike Brushless Gearless Hub Motor Rear Wheel Support 10 Speed Gears | eBay


    Pumping Power Hub Motor; Hot Rod Primer | ELECTRICBIKE.COM

    http://www.google.com/url?sa=t&rct=j...73231344,d.cGU



    Another homebrew Segway clone comes in at under $300
    Reacting is mind candy; it requires no thought. Thinking is tedious.

    Bikeforums 'Group Buy': Kinlin Rims, Sapim/DT Spokes, Formula/Bitex Hubs


    "The only good race pace is suicide pace, and today looks like a good day to die."
    -Steve Prefontaine

  7. #32
    Burning Matches. ElJamoquio's Avatar
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    You know what's even better than a segway, though? A frickin' quadracopter.

    Electric helicopter, baby. About eight fans for redundancy. Shoot em from the sky, just like Sarah Palin.
    Reacting is mind candy; it requires no thought. Thinking is tedious.

    Bikeforums 'Group Buy': Kinlin Rims, Sapim/DT Spokes, Formula/Bitex Hubs


    "The only good race pace is suicide pace, and today looks like a good day to die."
    -Steve Prefontaine

  8. #33
    Pedaled too far. Artkansas's Avatar
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    Quote Originally Posted by bigbenaugust View Post
    Would an elephant work?
    Of course, and elephants are very economical. They work for peanuts.
    "He who serves all, best serves himself" Jack London

    Quote Originally Posted by Bjforrestal View Post
    I don't care if you are on a unicycle, as long as you're not using a motor to get places you get props from me. We're here to support each other. Share ideas, and motivate one another to actually keep doing it.

  9. #34
    Senior Member bikebuddha's Avatar
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    The problem with most wheelchairs is that they lock you into facing one direction. I would propose a modular system with a powered base with six independently driven wheels that can each turn in any direction and a seating platform that's on it's own rotational motor. So instead of having to backup and turn around you could simply spin around and proceed in the opposite direction. Drawings to come...
    The few, the proud, the likely insane, Metro-Atlanta bicycle commuters.

  10. #35
    Senior Member Zedoo's Avatar
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    You could have your head put on a golem body.

  11. #36
    Pedaled too far. Artkansas's Avatar
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    Maybe rig up a couple of these babies to a lawn chair. They're supposed to be invented next year.

    "He who serves all, best serves himself" Jack London

    Quote Originally Posted by Bjforrestal View Post
    I don't care if you are on a unicycle, as long as you're not using a motor to get places you get props from me. We're here to support each other. Share ideas, and motivate one another to actually keep doing it.

  12. #37
    Senior Member eddiepliers's Avatar
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    One, I'm sorry that you had another stroke. In my free time, I will look into a design for you that is radical, yet functional.

  13. #38
    Senior Member mikeybikes's Avatar
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    I am so sorry to hear about that Tom. I'm sure you'll fight it to the very end though. You never know, you'll probably be walking some day and all these wheelchair designs will be for naught.

    Here's my submission. Meets most of your requirements. I didn't know what you used to hunt, so I assumed archery was your kinda thing since you're that cool of a guy. Let me know if you need more features. Anyone know any engineers so we can make some blueprints?
    2014-08-20 15_06_40-scanned image_1 (2).jpg

    Edit: Since I forgot to add some sort of joystick for control, the final design will be telepathically controlled.
    My Bikes: 2009 Breezer Uptown EX | 1980 Miyata 610 | 1970 Hercules | 198? Miele ?
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    My Blog, a mix of bicycling, tech, and family.

  14. #39
    Mystery Meat gitarzan's Avatar
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    Maybe this? A bit old school, but aren't we all?
    Quote Originally Posted by Jseis View Post
    Is a ukulele player in a mandolin town and banned from all bars by the chief of police unless he leaves his strings and gravy at the front door.

  15. #40
    Senior Member mikeybikes's Avatar
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    I would like to point out I'm the only that actually sketched my idea
    My Bikes: 2009 Breezer Uptown EX | 1980 Miyata 610 | 1970 Hercules | 198? Miele ?
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  16. #41
    Pedaled too far. Artkansas's Avatar
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    Quote Originally Posted by mikeybikes View Post
    I would like to point out I'm the only that actually sketched my idea
    I'd like to point out that some of my ideas have been sketchy at best.
    "He who serves all, best serves himself" Jack London

    Quote Originally Posted by Bjforrestal View Post
    I don't care if you are on a unicycle, as long as you're not using a motor to get places you get props from me. We're here to support each other. Share ideas, and motivate one another to actually keep doing it.

  17. #42
    Pedaled too far. Artkansas's Avatar
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    Quote Originally Posted by gitarzan View Post
    Maybe this? A bit old school, but aren't we all?
    Some ideas are classics.

    "He who serves all, best serves himself" Jack London

    Quote Originally Posted by Bjforrestal View Post
    I don't care if you are on a unicycle, as long as you're not using a motor to get places you get props from me. We're here to support each other. Share ideas, and motivate one another to actually keep doing it.

  18. #43
    Semper Fi, A way of life. qcpmsame's Avatar
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    Alright Tom, you win, this competition on physical and health problems between us has to come to a conclusion. I am calling it quits with Parkinson's Disease, you can now stop having strokes just to show the rest of us up

    I'm with the hovercraft-chair theory, some ducted fans and say adapted Di2, or EPS controls, for the speed, and maybe a flat bar to a joystick for directional control. The woods or the river shouldn't present any problems, and now I believe that you get a free hunting and fishing license in Florida with the disabilities you've collected, if you haven't already scored one.

    Best wishes on your rehab and recovery, Tom, thanks for being there for me when I was searching for diagnosis and answers. Its my turn to offer up an ear if you ever need.

    Bill
    "I Can Do All Things Through Christ Who Strengthens Me" Philippians 4:13

  19. #44
    Insane Bicycle Mechanic Jeff Wills's Avatar
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    Quote Originally Posted by qcpmsame View Post
    Its my turn to offer up an ear if you ever need.

    Bill
    Eeewww... that might have worked for Vincent van Gogh, but puuuhlease...
    Jeff Wills

    All my bikes.

  20. #45
    Pedaled too far. Artkansas's Avatar
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    Have you considered riding an alligator? They're low to the ground so they are easy to get on. They're fast, powerful and all terrain.

    It's worth considering.

    "He who serves all, best serves himself" Jack London

    Quote Originally Posted by Bjforrestal View Post
    I don't care if you are on a unicycle, as long as you're not using a motor to get places you get props from me. We're here to support each other. Share ideas, and motivate one another to actually keep doing it.

  21. #46
    Senior Member ro-monster's Avatar
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    Ok, I know this isn't a wheelchair. But it is an interesting handcycle.

  22. #47
    coprolite fietsbob's Avatar
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    Futurama got the anti gravity pallet lift & skateboard .. anti gravity pants and a chaise lounge would be nice..

  23. #48
    Senior Member mikeybikes's Avatar
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    You know Tom, by the time we design you a good wheelchair and get it built, you'll be up and walking
    My Bikes: 2009 Breezer Uptown EX | 1980 Miyata 610 | 1970 Hercules | 198? Miele ?
    Wife's Bike: 2008 Globe City 7

    My Blog, a mix of bicycling, tech, and family.

  24. #49
    Pedaled too far. Artkansas's Avatar
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    Quote Originally Posted by mikeybikes View Post
    You know Tom, by the time we design you a good wheelchair and get it built, you'll be up and walking
    So the faster we get it done, the sooner he is healed. Time's a wasting.
    "He who serves all, best serves himself" Jack London

    Quote Originally Posted by Bjforrestal View Post
    I don't care if you are on a unicycle, as long as you're not using a motor to get places you get props from me. We're here to support each other. Share ideas, and motivate one another to actually keep doing it.

  25. #50
    Senior Member mikeybikes's Avatar
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    So, who won the contest?
    My Bikes: 2009 Breezer Uptown EX | 1980 Miyata 610 | 1970 Hercules | 198? Miele ?
    Wife's Bike: 2008 Globe City 7

    My Blog, a mix of bicycling, tech, and family.

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