APC propellers are manufactured using a pultrusion process which allows for a higher fiber (60%) to resin (nylon binder) density. This provides substantially higher strength and stiffness than with glass filled nylon. The additional stiffness is beneficial to control of vibration resonance response. The higher strength allows the use of thinner cross-sections, beneficial to weight and aerodynamic efficiency.
Designed specifically for electric flight. These are lightweight, thin but quite stiff. These are different from the Slowflyer props (Hobby Lobby numbers APC07040SF, etc.) and are intended for stronger motors than parkflyers use.
