@muoune Master Airscrew 13x6. We took 4th place in SAE Aero Design with usign this prop. We've picked up 10kg. With Top Flight 13x6 we could'nt do that. RPM for Master Airscerw was aprox. 11000 and for Top Flight arround 10100. Master Airscrew allow your engine to work on higher RPM what gives you more power.
Looks like your monitor and vid card are low quality. The vid is clear. But--he's PUSHING on the throttle rod, and skewing the test results. Also, that prop is crap, and an APC prop might make a diff. Nobody much makes wood props worth a flip anymore since Rev-Up stopped. Best for combat bladder running!