yeah probably because that was not 3-1 ration at 650 rpm. that rotor was doing 2300 rpms from what that machine says so the statement in the video is not correct.
man if my math is F00ked up, 650 x 3 times ratio is 1950 RPM's your machine is saying 2300 RPM's so your claim is false. Can you give a real number at real rotor speed of 1950 RPM's. THanks!