Why Does My RC Plane Roll to the Left When I Increase Throttle?

Question: Why does my RC plane roll left when I throttle up?

Answer: When your RC plane rolls left as you increase throttle, it's usually due to engine torque and propeller effects. The spinning propeller generates torque that causes the plane to roll in the opposite direction of the propeller’s rotation. To fix this, first check your plane’s trim settings and adjust the ailerons slightly to the right to counteract the roll. Second, ensure your control surfaces are correctly centred and responsive. Third, try adding a small amount of right rudder trim to help balance the yaw and roll forces. If your plane has adjustable motor mounts, you can angle the motor slightly to the right to compensate for torque. Finally, test your plane at low throttle first to observe behaviour, then gradually increase throttle while making small trim adjustments. This step-by-step approach should help stabilise your plane and reduce the left roll when throttling up.