Why Does My RC Plane Nose Dive When I Launch It?

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

Answer: A nose dive on launch usually indicates the plane’s centre of gravity (CG) is too far forward or the trim settings are off. First, check the CG by balancing the plane at the recommended point, typically around 25-33% of the wing chord from the leading edge. If it’s nose-heavy, shift batteries or add small weights towards the tail to balance it correctly. Next, verify the elevator trim is neutral before launch; if it’s set to pitch the nose down, reset it to zero. Also, ensure your launch technique is smooth and level, not pushing the nose down. Finally, check the control surfaces for correct direction and movement—reversed elevator can cause a dive. Adjust these factors step-by-step, testing in a safe, open area until the plane launches smoothly without diving.