A word to the wise—metal props on your RC model are not allowed under any circumstances at SEFSD’s flying site at Mission Bay. The restriction on metal propellers is a safety measure, as metal blades pose a greater risk of cutting injuries and property damage compared to standard wood or composite materials commonly used in model aircraft.
Regardless of the propeller material basic safety procedures apply—from the AMA safety handbook:
PROPELLERS:
Cracked, nicked, or unbalanced propellers or rotor blades should be replaced and not reused!
Stay clear of the propeller arc while starting or running any engine or motor.
Do not stop engines by throwing rags or other objects in the propeller.
Painting tips of propellers a bright color helps you to better see the propeller arc during rotation.
Check the propeller and spinner for tightness before each operation.
Learn about and check for the proper grain patterns in wooden propellers to ensure strength in high rpm operation.
Exercise extreme caution adjusting needle valve settings on engines. Most adjustments should be performed from behind the model, thus avoiding reaching around a spinning propeller.
Fly Safe!
Steve Neu
