[Shortie771]

Oh, ok that makes much more sense. Thanks for the pictures. I am really liking how well this little model works when I blow on or or take a fan to it. If I blow softly, it only partially closes and a strong wind will close it completely. Just what I am trying to accomplish and regardless of how strong the wind is, it always returns to its original opened state without fail. Now I just need to find some coroplast and I can get the real thing going. When I finish it, I will strap my webcam to my bumper to create a video and adjust the weight so that it will completely close at as close to 45mph as I can manage.

P.S. fixed the duplicate photo to the correct one...