I flew my electric pylon ship at the local field on Sunday with a one-bladed prop. It was the loudest thing flying that day... much louder than the tune piped Shrikes and other glo stuff. They said I was definitely violating the 98 dB limit. I guess it won't be my Sunday flyer after all. It sounded more like a pulse-jet than a glo or electric motor. The one-bladed props make a heck of a racket. You'd think with one less blade you would make less noise. You guys would have been proud.