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 balance or trim issue. First, check the centre of gravity (CG); if the nose is too heavy, the plane will pitch down. Move the battery or add small weights towards the tail to shift the CG backwards, aiming for the manufacturer’s recommended position, often around 25-33% of the wing chord from the leading edge.

Next, verify your elevator trim settings. Ensure the elevator is neutral before launch—if it’s trimmed nose down, the plane will dive immediately. Also, check that all control surfaces move correctly and respond properly to your transmitter.

During launch, throw the plane gently but firmly with a slight upward angle. Avoid throwing it too hard or straight ahead, which can cause a sudden dive.

Finally, inspect for any damage or loose parts that might affect flight stability. By adjusting CG, elevator trim, and launch technique, you should see a smoother, more controlled climb out of launch.