Hi Dan
Sounds like you did a good test but are you sure about that unaccelerated trim-out(reflexed) speed? I've flown a 28 GT, a 26 & 29 Fusion, a 28 Revo, a 31 Nucleon, a 26 Sportster, a 28 Viper 2.... and none of them get anywhere near that in level flight unaccelerated, trim-out. Most I ever saw was 45kmh (Nucleon) with the real speed only coming with speedbar. Since all these wings have quite high speedbar pressure, 52 at trim-out would be very nice indeed. 24kmh hands up is also a very slow trim speed. Might be just the one I'm looking for!
Martin