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 is often caused by incorrect trim or centre of gravity (CG) issues. First, check the CG: it should be slightly forward of the wing’s midpoint, typically around 25-33% of the wing chord. If it’s too far back, the plane will pitch down aggressively. Next, verify that your elevator trim is neutral before launch; if the elevator is trimmed nose down, the plane will dive immediately. Also, ensure you throw the plane level or slightly nose up—launching with the nose pointed down encourages a dive. Inspect the control surfaces to confirm they move correctly and aren’t reversed. Lastly, consider the power setup: if the thrust line points too far down, it can push the nose down on throttle application. To fix the issue, adjust the CG by moving batteries or adding weight to the nose, centre the elevator trim, and practice a gentle, level launch. These steps should help your plane fly out smoothly without diving.