Horizontal Stabilizer Lift Torque 
Pilot Institute
OCTOBER 12, 2024
This creates boundary layer separation, resulting in a loss of lift. The turbulent air hits the horizontal stabilizer, which causes a vibration that can be felt throughout the aircraft. Watch out for torque effect (especially if you are in high-powered aircraft) since the increase in power can cause the nose to yaw to the left.
Plane and Pilot
OCTOBER 3, 2024
Another advantage of the counter-rotating props is the elimination of torque roll. This is the tendency to dig in the left tip float during takeoff while countering engine torque. The airfoil is a Harry Riblett shape, giving modernized flow separation on the leading edge for a soft stall yet with good lift and drag performance.
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