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 torque effects from the propeller and motor. The spinning propeller creates a reactive force that tends to roll the plane in the opposite direction. To fix this, first check that your control surfaces are correctly trimmed and centred. Next, try adding slight right aileron trim to counter the left roll at higher throttle. Also, ensure your motor is firmly mounted and the propeller is balanced to avoid unnecessary vibration. If your plane has a powerful motor, you might need to use differential thrust or adjust the control throws for better compensation. Finally, check that the centre of gravity is in the correct position, as an off-centre CG can exaggerate rolling tendencies. By methodically trimming and balancing your plane, you can reduce or eliminate the left roll when throttling up.