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For me, base on this design, as long as you can maintain the hub to be: ground to hub distance would always be greater than the hub to the horizontal distance (radius) to the rim. then you should be fine.
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The gantry was to work by building a framework, with rails constructed from 1x1 blocks. The gantry X/Y axis arms are to traverse the rails with wheels. There would then be some pistons for the z axis, a rotor, and finally a landing gear for grabbing. All pretty straightforward stuff. On something like this, you do not want suspension on the wheels:
Spring loaded wheels Wheel Material:Iron core,PU wheels Size:5" x 50mm ; 6" x 50mm ; 8” x 50mm Loading Capacity:280kg ~ 350kg Bearing Type:Dual Ball Bearing
The Global Air Cylinder Wheels team has also sent us a bunch of video detailing the advantages of a much smaller scale ASW for wheelchairs. Because of the built-in suspension effect, you'd likely experience more ride comfort, as well as a vastly superior ability to negotiate uneven ground without any of the wheels lifting off and losing stability.
Loopwheels' funding campaign runs on Kickstarter through May 15, 2013. Backer packages range from a single front or rear wheel to both wheels to a Dahon folding bike pre-pimped with its own set of 3-speed Loopwheels.
Loopwheels reduce vibration by up to 70% compared to a spoked wheel so the amount of vibration transferred into the person in the chair is significantly reduced.
A pair of shock-absorbing wheels for wheelchairs with integral suspension, designed to help you push over uneven streets, rough tracks, grass and gravel paths, with less effort. The carbon leaf springs give you extra power to get up or down kerbs/curbs. They’re wonderfully comfortable over cobblestones, and potholes needn’t be a problem any more!
I might eventually drop it. You have remember though, the roadsters sit atleast a half inch lower than the coupes to begin with (stock). Here's mine on 19's. I'll probably cut down the spring seats to level it up a bit in the rear. Use a slightly taller tire. That helps alot. Mine are 275/35/19 and 285/35/19 and I love the way it looks on the stock suspension. Last edited by Firehawk; 02-26-2007 at 03:34 AM. with my roadster, i went from Eibach, to Hotchkis, and now waiting for Tein Htech to come in. I think Htech will be the perfect drop for me, LOL Even with 35 sidewall tires, the gap in stock suspension is horrible. There are a lot of good points that have been made in this thread. I think a big factor in your decision will be really the road conditions in your area. Lots of changes in slopes that cause you to bottom out would not be a good thing for a lowered vehicle. The cars I have seen here look quite good, mostly because they have either 19s or dubs on them.
This active suspension preserves more of the forward motion energy that would normally be lost as the suspension allows the wheelchair to bob and sag. It also allows the wheelchair to ride over curbs and bumps that might have stopped traditional wheelchairs, giving users better access to places where ramps haven’t yet been installed.
These air shocks are tuneable to give you whatever level of tire deflection you choose, from super-firm to softer and squishier than a regular deflated tire can handle. Likewise, you can design in whatever degree of lateral flex suits your application, and even whatever level of torque flex you'd like, which allows the wheel to flex a little on the axle before it turns. This allows it to act as a soft torque coupler and gives a touch more traction in very difficult circumstances before the wheel spins, as well as slightly isolating the drive train from damaging torque forces in the rough stuff.
Fittings, unless noted, are made from hot-rolled, pickled and oiled steel plates, bar, strip or coil, and conform to one or more of the following specifications: ASTM specifications A575, A576, A635, A1011 SS GR 33, A1011 HSLAS GR 45 or A36. All fittings meet or exceed physical properties of ASTM A1011 GR 33. The pickling of the steel produces a smooth surface free from scale. Many fittings are also available in stainless steel, aluminum and fiberglass. Consult factory for ordering information. Green Powder Coat (GR), conforming to commercial standards for Powder Coating Electro-galvanized (EG), conforming to ASTM B633 Type III SC1 Hot-dipped galvanized (HG), conforming to ASTM A123 or A153 Plain (PL) Unistrut Defender (DF), conforming to ASTM A1059 or A1046
Pearce is now raising production funds for his Loopwheels, on Kickstarter. A pledge of £195 (US$297) will get you a front wheel (which can be used with a conventional rear wheel), while £420 ($640) will get you a front and rear set – when and if the funding goal is met. A 26-inch model for mountain bikes is also in the works. View gallery - 6 images 9 comments Based out of Edmonton, Canada, Ben Coxworth has been writing for New Atlas since 2009 and is presently Managing Editor for North America. An experienced freelance writer, he previously obtained an English BA from the University of Saskatchewan, then spent over 20 years working in various markets as a television reporter, producer and news videographer. Ben is particularly interested in scientific innovation, human-powered transportation, and the marine environment. Quantum computing hits the desktop, no cryo-cooling required Intense workouts shortly before bed found to impact sleep quality Fossilized cartilage reveals dinosaur cells in incredible detail
There are various ways of attaching the wheels of the car so that they can move up and down on their springs and dampers , and do so with as little change as possible in the distance between adjacent wheels or in the near-vertical angle of the tyres to the road.
Near the end of the video it shows the bike on the "rolling road" test bed, the rim is moving laterally, not good in most bike applications. wle April 18, 2013 05:17 PM