The polygon wonder wheel is made of individual containers. Tubes connect opposite pairs. I wasn't sure it would run.
Speed is about one RPM, but torque is strong.
Wally Minto's eyes twinkled. Now that you've got your pictures on the serious stuff, I want to show you our latest engine. It's at least 85 percent efficient, never wears out, requires no fuel or maintenance, costs very little, and should have been invented 100 years ago. Four used propane bottles were hose-clamped to the ends of two pieces of aluminum angle, each about four feet long. The angles crossed at 90 degrees at the center and were mounted on a central hub like a skinny four-blade windmill with bottles to swing in the breeze.