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Old 08-18-14, 11:18 AM   #26
bigbenaugust 
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Would an elephant work?
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Old 08-18-14, 11:44 AM   #27
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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
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Old 08-18-14, 07:24 PM   #28
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Old 08-18-14, 08:06 PM   #29
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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.
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Old 08-18-14, 08:44 PM   #30
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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


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Old 08-18-14, 09:25 PM   #31
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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
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Old 08-18-14, 09:56 PM   #32
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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.
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Old 08-18-14, 11:25 PM   #33
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Would an elephant work?
Of course, and elephants are very economical. They work for peanuts.
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Old 08-19-14, 11:08 AM   #34
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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...
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Old 08-19-14, 05:26 PM   #35
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You could have your head put on a golem body.
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Old 08-20-14, 03:07 AM   #36
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Maybe rig up a couple of these babies to a lawn chair. They're supposed to be invented next year.

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Old 08-20-14, 03:02 PM   #37
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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.
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Old 08-20-14, 03:09 PM   #38
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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?


Edit: Since I forgot to add some sort of joystick for control, the final design will be telepathically controlled.
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Old 08-20-14, 07:23 PM   #39
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Maybe this? A bit old school, but aren't we all?
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Old 08-26-14, 12:28 PM   #40
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I would like to point out I'm the only that actually sketched my idea
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Old 08-26-14, 11:49 PM   #41
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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.
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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.
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Old 08-26-14, 11:52 PM   #42
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Maybe this? A bit old school, but aren't we all?
Some ideas are classics.

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Old 08-28-14, 06:31 AM   #43
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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
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Old 08-28-14, 05:59 PM   #44
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Its my turn to offer up an ear if you ever need.

Bill
Eeewww... that might have worked for Vincent van Gogh, but puuuhlease...
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Old 08-28-14, 06:09 PM   #45
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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.

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Old 08-28-14, 08:44 PM   #46
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Ok, I know this isn't a wheelchair. But it is an interesting handcycle.
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Old 08-29-14, 10:25 AM   #47
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Futurama got the anti gravity pallet lift & skateboard .. anti gravity pants and a chaise lounge would be nice..
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Old 08-29-14, 10:32 AM   #48
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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
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Old 09-03-14, 10:49 PM   #49
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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
So the faster we get it done, the sooner he is healed. Time's a wasting.
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Old 09-10-14, 11:34 AM   #50
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So, who won the contest?
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