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 that, without some additional shape to opposite sides at "opposite" locations, it wouldn't spin very well as oncoming wind would hit both sides of the disc equally, thus either preventing it from spinning or creating a stuttering. I'd prefer to add as little as possible so that it retains the basic flat circle shape. I thought of a 12" wing shaped piece but if i understand rightly, it would be shuting highrprssure air directly into the steel disc which just would cause some kind of turmoil. Can anyone point me to a source or idea for an add-on "wind catcher director" thingy? Thanks so much.