The normal method of installation of a large spinner on a light aircraft involves installing a circular spinner back plate over the engine driveshaft, then the propeller, followed by a spinner front plate. The spinner dome is then mounted over this assembly and secured with screws to the back and front plates. Small plates are usually fitted behind the propeller to fill in the spinner dome cutouts and are secured to the backplate again with screws. Some spinner designs do not incorporate the front plate, although these are not suitable for higher-powered engines.
