Why does my RC plane nose dive on launch?

Question: Why does my RC plane nose dive on launch?

Answer: A nose dive on launch usually indicates a problem with the plane’s balance or controls. First, check the centre of gravity (CG). If the CG is too far forward, the plane will pitch down immediately. Move the battery or add small weights towards the tail to achieve the recommended CG position, typically marked on the wing.

Next, verify the control surfaces. Make sure the elevator is neutral or slightly up on launch. If the elevator is set to pitch down, the plane will dive. Also, check for any damage or loose linkages that might cause incorrect control input.

When launching, ensure you throw the plane gently and level, not angled downward. A strong or downward throw can cause a dive. Finally, adjust your trims on the transmitter if needed, and test fly in calm conditions. These steps should help you achieve a smooth, level launch.