I tested the DLE30 again last week with the cyberplate rear conversion and a Vess 19A and am getting 15lb of thrust +/- 2 oz. On my 12lb. Edge 540 it pulls out of a hover and accelerates at a descent pace. Pulling 12lb. Straight up is really no easy task if you think about it. It’s no rocket out of a hover, but good.. I have nice steady harriers, beautiful flat spins, hovers at a strong 1/3 throttle all day. It does the best ssssslllllllllooooooowwwwwww knife edge harriers I have seen (huge rudder surface). Good luck with your’s, I know I love both of mine. I have a side carb. on a Yak that I am putting the new rear conversion from Valley View on next week. Will get some thrust numbers on that when it is done.