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 you increase throttle and your RC plane rolls left, it’s usually due to torque effects from the motor and propeller, or aerodynamic factors. The spinning propeller creates a torque that tends to roll the plane opposite to the propeller’s rotation. To fix this, first check your control surfaces and trim settings to ensure they are neutral. Next, try adding right aileron trim to counteract the roll. If your transmitter supports it, apply a throttle-to-aileron mixing to automatically correct this as you increase throttle. Also, verify the propeller is installed correctly and matches the motor specifications. If the problem persists, consider adjusting the motor mount slightly or adding small wingtip weights on the right side to balance the torque. Testing in a safe, open area and making small incremental adjustments is key. This approach will help you achieve stable, straight flight when throttling up.