Ov3rquad is not my design. It was designed by Ov3rmind, a member of the openpilot community. Ov3rquad is a large fpv quad built for use with f450 arms. The the airframe is very accommodating for electronics. This frame has a strong community following at http://forums.openpilot.org/topic/13079-ov3rquad-open-source-diy-fpv-frame-for-all/ . It's a little old, but I'm planning on reviving it in my neck of the woods.