I always liked Peter Sharpencil and his Sharp Rotor concept. So simple you’d think it had would be an old. well-explored idea, but no, seems like it has been barely a blip on anyone’s radar screen! 
I always liked Peter Sharpencil and his Sharp Rotor concept. So simple you’d think it had would be an old. well-explored idea, but no, seems like it has been barely a blip on anyone’s radar screen!