The suspension effect also makes it much easier for a wheelchair user to negotiate steep curbs, both nosing down and backing up, as the suspension effect takes much of the steepness out of the exercise.
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Wife-and-husband design and manufacturing business Jelly Products has come up with a way to make life better and more comfortable for wheelchair-users with its innovative ‘loopwheel’.
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Instead of relying on a suspension fork and rear shock, the Loopwheel lets the bike’s 20-inch wheels absorb the bumps
Citation: Triche, E., Beno, J., Tims, H., Worthington, M. et al., "Shock Loading Experiments and Requirements for Electric Wheel Motors on Military Vehicles," SAE Technical Paper 2005-01-0278, 2005, https://doi.org/10.4271/2005-01-0278.
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Go where you’ve never thought possible with The Acrobat’sTM unique In-Wheel SuspensionTM. The Acrobat’sTM suspension arms absorb more impact than traditionaly suspended wheels. The shocks remain perfectly rigid over flat terrain, yet offer unparalleled cushioning to on bumpy pavement or off-road, to go up or down curbs and travel further.
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You are currently viewing our boards as a guest so you have limited access to our community. Please take the time to register and you will gain a lot of great new features including; the ability to participate in discussions, network with other RV owners, see fewer ads, upload photographs, create an RV blog, send private messages and so much, much more! Personally I don't like to lift wheels off the ground with the jacks and I would never lift the drives off the ground. If it's so unlevel that the wheels would be off the ground, I'll run up on some boards first to get close, then finish leveling with the jacks. Fronts are ok. You won’t damage anything. As stated above, never the rears (drive wheels) because the parking brakes are on the rears. If you’re not comfortable with the fronts being off the ground, you can build some small ramps or wood blocks you can drive the front wheels onto. If you search for ramps on this forum you’ll find lots of examples. When an air bag RV is lifted, ONLY the axle weight is left on the ground. no matter the lift height. This is unlike a leaf or coil spring vehicle. The tires provide limited stopping. If the leveler pads are on softer ground, they will put much restriction to the RV moving sideways as the pads will be in a hole. The suspension system has no problem handing from the shocks / limit straps. It endures FAR greater stress while you are driving down the road soaking up the bumps and road heaves. All that being said, try to NOT lift the RV any further up than is required. Things inevitably break. Hydraulic lines, solenoids, seals etc. You don't want a single leg to drop on it's own which the torques the chassis. An RV up in the air is invitation to crawl underneath or store stuff under. Not good when something breaks. So, pick a more level spot or use blocks to get the rig as level as you can before lifting. Don't park on a hill and lift so that there is no chance of slipping sideways (tire and / or leveling pad friction). Your drive axle (brakes) always have to be on the ground... else you'll go down hill as soon after you've walked bow to stern inside the coach a few times... I don't like to lift either off the ground ever. I only use the jacks enough to level the final little bit and to not have the coach shake while moving around in it. The thread Sonic posted is great! I use 2x10s like suggested in the posted link, but took it slightly further. I didn't cut an angle, don't really need it and in the past I found that it sometimes gives them the ability to slip while driving onto them. I would post pictures but it is in the shop for engine repair and the boards are in unit. Basically I took 2x10s and cut 2 boards the longest that would fit in the bay I was storing them in (about 36 inches long). I then cut 3 more boards about 8 inches shorter (for a total of 4 boards high), so lenghts of, 12, 20, 28, 36 long. I have 2 sets in case there is a need for the rear duals to go on boards. To keep the boards from sliding when driving onto them, I bought 3 different size carriage bolts that would go through 2, 3, or 4 boards but not all the way through, just long enough to keep them stable as you drive. I then took a spade bit that was 1/8 inch larger than the bolts and drilled through all 4 boards to accommodate the bolts, i did this in the rear where they would line up even and no worry about puncturing tires if they popped up slightly. I then took a spade bit slightly larger than the bolt head, and drilled on top of the holes the thickness of the bolt head. This way they sit down flush with the boards. It works very well! For the jack pads, I couldn't use anything very thick, as if I am on level ground and I dump the air, I only have about 4 inches between the jack pad and ground. I took 2x4s, and cut them the length of 3 2x4s put next to each other. I cut 6 in total. I then laid them crossways (think the first 2 layers of Jenga) and nailed them together from both sides. These work great for leveling! When i get it back from the shop next week I will try to remember to post some pictures. Your drive axle (brakes) always have to be on the ground... else you'll go down hill as soon after you've walked bow to stern inside the coach a few times...
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He started a company, Softwheel, in 2011. He found support in life sciences firm RAD BioMed Accelerator Group, based in Tel Aviv. With RAD's state-of-the-art facilities at his disposal, Wolf built a team of engineers and designers. Soon after, his product, the Acrobat, was born. The Acrobat is a shock-absorbing wheel invented by Gilad Wolf and his team at Softwheel.
When you have plenty of bicycle to work with, such as is the case with a mountain bike, it’s not such a big deal to design it with front and rear suspension. When the bicycle in question is a diminutive folding city bike, however, it gets a bit trickier. That’s why UK industrial designer Sam Pearce has created Loopwheels. Instead of relying on a suspension fork and rear shock, it lets the bike’s 20-inch wheels absorb the bumps.
It's unclear at this point whether you'd lose any forward motion energy due to torque flex, but that can be tuned out of the system if required in any case. It's also unclear how much a pair of wheelchair-sized ASWs would cost at this point. We assume they're not cheap compared to a regular rim and tire setup. Here's some annoyingly infomercial-style video comparing regular wheelchair wheels to an ASW setup over curbs and grassy, uneven terrain.
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"My mobility has been hugely limited due to pain, and when I’m outdoors I’m reliant on my wheelchair. Potholes, cracks, cobbles: when you have chronic pain, you feel every tiny vibration like a knife. The Loopwheels took only a few seconds to fit and I immediately noticed a big difference. Loopwheels definitely reduce the pain of going over bumps, kerbs and cobbles . . . the addition of Loopwheels to my chair has made every trip out far more comfortable." Loopwheels Extreme The best vibration-reducing off-road wheelchair wheels.
Please keep comments to less than 150 words. No abusive material or spam will be published. Slowburn April 18, 2013 02:46 AM
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Kerbs are less of an obstacle with loopwheels. Loopwheels reduce jolting, soften the impact of landing, and so can help manage pain. Over 95% of the customers rate Loopwheels as high or very high quality Over 85% of the users felt positive about Loopwheels after using them for 2 weeks Over 80% of our customers said they’d chosen Loopwheels to reduce the amount of vibration they experienced in their wheelchair
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With all the comfort that the Loopwheels provided I was concerned about the responsiveness of the bike – but my worries were for naught, as soon as power is applied through the pedals the bike skips forward without any noticeable lag (I’m smiling just writing this)
A leading arm , used only at the front, is the opposite of a trailing arm, with the wheel in front of the pivot.
Gekko are designed for wheelchair users with complete hand function and complete or limited hand strength. Our best selling ergonomic push rim.
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Set in the Nottinghamshire countryside, Loopwheels HQ is surrounded by rutted fields, forests and coarse roads – nigh-on the perfect environment to test out suspension wheels!
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ONDA terms itself a recumbent stunt bike/trike that can also be used to commute to work. Commute to work? What am I, the imp from Game of Thrones? Cee Lo Green? I'm not willingly placing a 3-foot-high version of myself...
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To our aesthetic, the e-tron’s resulting ride height is quite improved, garnering many more comments from other Audi owners at enthusiast events. Though the general car market may like crossovers, the more Avant-like stance of our long roof e-tron definitely resonates amongst car people.
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Our Loopwheels for wheelchairs help you push over uneven streets, rough tracks and gravel paths more easily, and the carbon springs can give you extra power to get up or down kerbs. They reduce jolting and vibration, by as much as two thirds compared with a spoked wheel. Some customers tell us this helps them manage discomfort.
We’ll deliver a set of trial Loopwheels directly to your door with instructions on how to fit these to your existing chair. Ready fitted with tyres and alu push rims.
- Suspension systems, by their very nature, allow movement. This is bad on something that needs to be solid. When the gantry is holding something, I don't want the arms to flex, bend, pivot, or do any of the things a suspension would do.
Swing axles may be at the front or rear. The system is like a beam axle cut in half and attached to pivots on the frame.
The forces imposed on the anti-roll bar subject it to constant twisting and flexing, which in turn put its various rubber mounting bushes under great load. The bushes gradually wear and lose their effectiveness. Over a period of years the rubber hardens and tends to crack.
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The three loops in each wheel work together as a self-correcting system. This spring system between the hub and the rim of the wheel provides suspension that constantly adjusts to uneven terrain – cushioning the rider from bumps and potholes in the road. In effect, the hub floats within the rim, adjusting constantly as shocks from an uneven road hit the rim of the wheel.
But the negatives are pretty significant, especially in and around Boston, where our roads are rapidly deteriorating, and potholes are a regular occurrence.
The campaign will connect with consumers at multiple touchpoints combining elements of content marketing, search, social advertising and conversion rate optimisation. Joe Read About the author
A Life Lesson About People With Disabilities For Parents Everywhere - "Giving a child a good experience may ultimately make them more understanding and comfortable. The problem is though that some parents don’t know how to react to their child’s curiosity."
The steering and suspension systems are important for both your safety and comfort when driving as they ensure a smooth ride as your car travels over bumpy roads. The two systems are usually talked about together as they are directly related to each other. However, what does each system do? When do you need to check these important systems? And, how can you tell if either system is damaged in some way?
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Editor’s note: This article originally appeared in Q2_2020 of quattro Magazine and on our sister site, e-tron connect. If you would like to subscribe to quattro Magazine, please join Audi Club here.
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Hey kids, here's a surefire way to make your parents construct an advent calendar counting down the days until you go back to school next fall. The Turbospoke system, a battery-free, pedal-powered child's dream, fits...
The British engineer who really HAS reinvented the wheel: Loopwheels system abandons spokes for springs to give a smoother ride
A battery box booster keeps the cars in continuous motion through the epic loop. (Batteries not included).
I might eventually drop it. You have remember though, the roadsters sit atleast a half inch lower than the coupes to begin with (stock).
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“Potholes, cracks, cobbles – when you have chronic pain, you feel every vibration like a knife. Loopwheels took only a second to fit. They definitely reduce the pain of going over bumps, kerbs and cobbles and have made every trip out far more comfortable.”
Hollow kingpin sandwich caster Material: PP wheel bonded to elastic rubber Size:100mm x 32mm ; 125mm x 35mm Load:110kg,150kg Bearing: Roller Bearing Purpose:Shock resistant casters,Shock proof casters,Industry caster wheels,trolley casters
Without a suspension system, the car’s wheels would hit a bump and move up and down perpendicular to the road surface. This vertical energy would be transferred to the car’s frame, which would pull the wheels away from the road before gravity takes over and slams the car down. The suspension system must be finely tuned using a combination of springs and shock absorbers to reduce these effects for a comfortable and smooth ride.
Name:Spring loaded caster wheels Wheel Material:Aluminum core,PU wheels Size:4" x 50mm ; 5" x 50mm ; 6" x 50mm ; 8” x 50mm Loading Capacity:280kg ~ 400kg Bearing Type:Dual Ball Bearing
Customer Expectations and requirements are met through a combined success of teamwork, expertise, technology, and commitment to excellence in design and manufacturing.
It’s one thing to look at the video, but up close they really are a sight to behold – they literally challenge everything you think you know about a spoked bike wheel.
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For the commuter, or indeed for the rider that values comfort rather than speed (but still wants to put in a lick of pace when needed) then this really does tick all the boxes.
2.1: Humps - if u roll over a hump, den the shock can make the hub offset.but if it maintain with the situation i wrote on top. then you'll have the case o rolling in a "something like a smaller wheel since the radius reduced" but will be fine, then after the humps, the wheels would recover the shape. here you'll still good
Heavy duty spring loaded casters 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
With every rotation the springs will bend and absorb a amount of energy. Normally this is called “damping”. Its pretty useful in some cases. But it’s pretty unusual to damp a rotation of wheels, because this will slow down the straight moving. For Bicycles (and all other vehicles) you should mount your springs in the direction where the impact is coming from plus a additional damper to stop the bouncing of the spring. David on April 14th, 2013 - 6:03pm Hmmmm on April 14th, 2013 - 6:31pm
The three loops in each wheel work together as a self-correcting system. This spring system between the hub and the rim of the wheel provides suspension that constantly adjusts to uneven terrain – cushioning the rider from bumps and potholes in the road. In effect, the hub floats within the rim, adjusting constantly as shocks from an uneven road hit the rim of the wheel.
GACW Inc has signed a Supply, Service and Exclusive Agent Agreement with Brownfield Engineering and Maintenance Pty Ltd, a leading Australian engineering and maintenance company to market and distribute GACW’s Air Suspension Wheel (ASW) technology to the mining Off the Road (OTR) sector.
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Trying to let people know that we are more than just spokes ‘n’ wheels. | 23 Things That People In Wheelchairs Have To Cope With
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.
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But the negatives are pretty significant, especially in and around Boston, where our roads are rapidly deteriorating, and potholes are a regular occurrence.
Symptoms that tell you when components of your suspension may need to be looked at sooner include: The job of suspension system is to stop you rocking and rolling when you are driving and though the replacement of these components can be expensive they are critical to the stability, safety and ride comfort of your vehicle and should not be overlooked.
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