Why Does My RC Plane Roll 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 propeller torque and P-factor effects. The spinning propeller creates a torque that tries to roll the plane in the opposite direction of the propeller’s rotation, often causing a left roll if your prop spins clockwise from the cockpit view. To correct this, first check your control surfaces and trims to ensure the plane is properly balanced. Then, try adding a small amount of right aileron trim or slightly adjust the aileron throws to counter the left roll. You can also add some right rudder trim to help maintain level flight. If your model has adjustable motor mounts, slightly tilting the motor can help counteract the torque. Finally, verify the battery is fully charged and the plane is not nose-heavy or tail-heavy, as weight distribution affects handling. Test fly after each adjustment to find the right balance. This approach will help keep your plane steady when throttling up.