FWIW I have tested my DA50/KS1060 Mej 23-8 70 degrees 600 ASL, at 6800RPM is read 25.4 lbs on a very good fish scale (truth machine) made by rapala. I indeed had this engine on a comp-arf 2.3. I could not hover it all too good and I was just learning that trick, a competent 3D flyer at my field could hover and TR it with good vertical pull out. That plane/engine combo is a blast to fly and when the 2.3 yak come out I'lll have another.

Dart, you may or may not be happy with this engine on that plane. It all comes down to how you like to fly. My 2.3 weighted 19.3 lbs and it was a joy. I'm a big DA fan and they keep me in the air 24-7 365 JME!

JOe