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 means the 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, usually about 25-33% back from the leading edge of the wing. If it’s too far forward, the plane will naturally pitch down. Adjust by moving the battery or adding small weights towards the tail.

Next, verify the elevator trim on your transmitter. If the trim is set to push the nose down, reset it to neutral before launch. Also, ensure your launch technique is smooth and level; throwing the plane too steeply down can cause a dive.

Finally, inspect the control surfaces to confirm they are moving correctly and not reversed. If the elevator is reversed, it will cause the plane to pitch down when you pull the stick back. Correcting these points should prevent nose dives and give you a smooth, controlled launch.