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 means your plane’s centre of gravity (CG) is too far forward or the elevator trim is set incorrectly. First, check the CG by balancing the plane at the recommended point, often around 25-33% of the wing chord from the leading edge. If it’s too nose-heavy, shift battery or add weight to the tail. Next, check the elevator trim on your transmitter; it should be neutral or slightly nose-up at rest. Also, make sure your throws are not excessive, which can cause abrupt pitching. When launching, give the plane a smooth, level toss rather than an aggressive upwards or downwards angle. Finally, verify the control surfaces move in the correct direction—reversed elevator can cause a dive. Adjust these factors step-by-step, and your plane should fly out smoothly without nosediving.