RE: Kangke Waco Biplane
I saw a Kangke Waco with an FPE 2.4 on it last year at the West Coast Festival Castle AFB and it tore up the sky. I have a ZDZ 40 on mine and I have to say that the FPE easily out performed my setup. I would stay within the 2.4 range for the highest flying satisfaction. The DA 50, although a fine engine, is just too much.