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 motor and propeller. The spinning propeller creates a reactive force that tends to roll the plane opposite to the propeller’s direction. To fix this, first check the direction your propeller spins. If it’s clockwise, the plane will typically roll left; if anticlockwise, it may roll right.

Here’s what to do:
1. Adjust the aileron trims slightly to counteract the roll.
2. If trims aren’t enough, add mechanical differential or adjust the control surfaces slightly to compensate.
3. Consider adding a slight right rudder input when applying throttle.
4. Check that your motor and propeller are correctly matched and securely mounted.
5. If you have a gyro or flight controller, enable or tune yaw compensation features.
By following these steps, you’ll reduce unwanted rolling and improve your plane’s handling during throttle changes.