Recent content by Bill McGrath

Or I could copy the blades as shown in your posted photo and insert my disc in the middle.

Thanks for replying. yes it's vertical, so no day. I want to keep it simple so no other propellant or windmill-like tails to steer into wind. I think I'll experiment with a model. again.

I'm basically familiar with wings and lift. I've run into an issue with a sculpture I'm making. I have constructed a 48" disc of 1/16" perforated steel framed in a 1/4" thick by 1 1/4" steel rim. I want to attach bearings to opposite sides of the rim and allow it to spin in the wind, but I sense...

I've become a metal sculptor, getting more serious in retirement from a career in law and government. It's exciting to get back into, first geometry of shapes and the physics of welding. Now I am doing a few larger pieces and currently a kinetic piece so I find myself reading a lot about...