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 often due to torque and P-factor effects from the propeller. The engine’s rotation creates a twisting force that tends to roll the plane opposite the propeller’s spin. To fix this, first check if your plane’s trim and control surfaces are correctly set and centred. Next, try adding a small amount of right aileron trim or adjust the control surfaces slightly to counteract the left roll. Also, verify that your motor and propeller are installed correctly and that the propeller is balanced. If your plane has adjustable motor mounts, try angling the motor slightly to the right to counter the torque. Finally, practise gentle throttle increases to manage the roll until you’re comfortable with the correction needed. These steps should help you maintain stable flight when powering up.