A picture of the very incomplete gantry as it currently is, to give a better idea of what I'm up to: < > The only other way to get wheels to turn is either roll them freely unbound to anything, or attach them to a rotor. You can adjust the suspension settings to make them ridged, and you can use vertically oriented suspensions to prevent side wobble as if it was on rails. Wheels lack any form of propulsion on their own. They also lack any form of innate rotation ability. They're just cylindrical objects, exactly as they are in the real world (try welding a wheel directly to something sometime and see how well it spins). You need to provide an axle to them, and propulsion should you require it as well.
Spring loaded casters with brake 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

Suspension Wheels Loopwheel & Softwheel Home Parts & Accessories Accessories Suspension Wheels SoftWheel state that their wheel's innovative in-wheel suspension technology can help reduce pain and provide a more comfortable ride. 3 suspension arms are built inside the wheel and automatically compress when encountering an obstacle or rough terrain, but remain rigid and strong over flat surfaces The arms are set equidistant around a central hub to provide shock absorption - no matter what the angle of impact is. The suspension arms immediately reset and return the wheelchair – and rider, to a level ride. Standard Specifications Carbon Fibre springs with Hydraulic and Pneumatic damper suspension rams Aluminium hub - to suit 1/2" quick release axles Max Travel: 32mm Carbon Fibre rims Standard 6-tab hard anodised push-rims 32mm clearance required if you have mud guards Wheels are not interchangeable between left and right sides * Wheel weight without pushrim and tyres A Loopwheel is a wheel with integral suspension, designed to reduce vibration and increase performance and provide greater comfort. Loopwheels give you a smoother ride. They are more comfortable than standard wheels: the carbon springs absorb tiring vibration, as well as bumps and shocks. They’re designed for everyday use and are strong and durable. They won’t run as true as a spoked wheel, but they will be a lot more comfortable. Loopwheels are not just a wheel, they’re a suspension system. Loopwheels help people push over uneven streets, rough tracks and gravel paths, with less effort, and the carbon springs 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. Users report that this helps them manage pain. With standard quick release axles, a choice between 12mm or ½ inch bearings and available in 24″ and 25″ sizes, loopwheels fit most manual wheelchairs. Standard Specifications Carbon fibre Loop suspension Load limit: 120kg Max Travel: 70mm Double wall aluminium rims Standard 6-tab hard anodised push-rims Contact us for available colours * Wheel weight without pushrim and tyres
Kids can send the included Hot Wheels vehicle spinning around the giant 71cm wide track loop to see if it safely lands, using the slam launcher.