Guys if anyone's after a not bad priced 70mm EDF combo HK are now selling Lander gear at pretty good prices, I just finished doing some benching and this is what I got.
I didn't use a thrust tube and for batts I had 2 x 2200 30C 4S in parallel with ESC set to high timing as factory recommends, I got the following:
49,500 RPM giving 1.48kg of thrust and 260 kph efflux.
motor/fan case was only warm (not hot). It was factory balanced quite smooth and I didn't have to do anything to it. There was a little bit of vibration around mid throttle but not too much, low and high throttle were very smooth.