Indoor aerobatics is all about doing it slow By Michael RamseyStatic photos by the author. Flight photos by Jay SmithAs seen in the March 2009 Model AviationThe cool thing about flat-foam models is that almost anything you can think up that has wing area and a correctly located CG will fly. My biplane design came about just that way; it’s exactly what I wanted.The original Zactly had been available from Midwest Products as a free full-size plans download. At the time of its release, it was a great-flying foamie for outdoors or indoors. With more than 400 sq. in. of area, you could build…