Originally Posted by dbc
Use a nut, a flat washer, the prop, another flat washer and the final nut. Don't use the supplied spinner or backing plate. Just the above items on the motor shaft. Tighten it up and it will be very secure. Then push the spinner on.
Sorry for the dumb question, but what size nut? I have some tiny 3mm hex nuts that fit into the GWS style prop hub area. Is that all? The rubberized nose seems to fit well, but hoped for something more secure.