These designs all use Wild Gears’ 210-tooth ring, and are 8″ in diameter. Captions give details. Many of them explore the possibilities of the 120 triangle gear. More to come.
I took the second last image above, made a series of rotated versions in Photoshop, then layered them into an animated GIF which I use as my YouTube logo. You may not see it rotate there, so here it is: