P-factor refers to the asymmetrical thrust generated by a spinning propeller. It contributes to the left-turning tendency of single-engine airplanes and twin-engine airplanes that lack counter-rotating propellers.
Gyro refers to gyroscopic precession caused by the propeller. It, too, is a contributing factor of left-turning tendency.
Torque—another force caused by an aeroplane's spinning propeller—causes the aeroplane to rotate clockwise about its longitudinal axis. It is also a contributing factor for left-turning tendency.[/quote]
I guess some aircraft are just modelled with more accurate flight models than others, thanks again Alex
