This Instructable will show you how to design and build your own Ripstik that "sticks" out in a crowd. Since it looks like a fish, I call it the FISHSTICK.
The torsion bar is hidden underneath the board and is basically made of a door hinge combined with a very stiff blade of a saw. It took me quite some time to get the "stiffness" of the board right, but with this set-up, the feel of the board comes very close to that of an original Ripstik.
Wolfshade has posted an I'ble on how to build a Ripstik back in 2009. Check it out here
because I learned some aspects of it.
The motivation for this project came from the fact that all Ripstiks look alike. Secondly, the design of them simply resembles of two canoe paddles connected by a rod. Can't this be improved?