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 your RC plane’s centre of gravity (CG) is too far forward or your elevator trim is set incorrectly. First, check the CG by balancing the plane at the recommended point, usually around 25-33% of the wing chord from the leading edge. If the nose dips, try shifting the battery or adding a small weight to the tail to move the CG back slightly.

Next, ensure your elevator trim is neutral before launch—if it’s trimmed nose down, the plane will dive immediately. Also, launch with a gentle, level toss rather than a steep angle to maintain control. Finally, check that your control surfaces are moving correctly and not reversed, as incorrect elevator controls can cause diving. Adjust these settings step-by-step and test fly in a safe, open area until the plane maintains steady flight after launch.