What do you get when you mix an old Bike Wheel, Bike Crank, and Bike Wheel Hub? You get a functioning Video Camera Stabilizer a.k.a DIY Steadicam. It will all make more sense after checking out the video above from YouTube member thomasumJohnson. Improvements? I would stay start with a smaller wheel maybe from a childs bike. This should cut down on about half the size, but still give you that nice arch. The smooth wheel hub is a nice touch, and it appears he's using a U-Joint similar to the WSClater builds for making a Gimbal Handle. But if you're not the type to tackle a 'Gimbal', Lensse can provide you with something http://cheesycam.com/lensse-gimbals-for-diy-steadicam-stabilizers/.