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I modified the original spinner base to fit motors with a hex prop shaft and the spinner cone to have a rounded tip rather than a sharp point. I mount the cone to the base with M3 machine screws. Prior to putting the cone on I screw the M3 screws into the base holes to tap them, then install the prop and cone. I have also used coarse thread screws as well but I prefer the M3 machine screws with Allen key head. The model I made this for is an older FMS 1100 mm P-51 "Strega" that uses a 3648-KV770 motor and have also confirmed fitment on a Predator 3136-KV1200 motor (shown in photos) The diameter is slightly small compared to the original spinner on the FMS P51 but works and looks fine (see photo)
Confirmed props that will work with this are from Master Airscrew 3-Blade Series:
MA.3B11x60N01 11x6 3-blade https://bit.ly/4wFBIiq
MA.3B11x70N01 11x7 3-blade https://bit.ly/4nHvdYi
MA.3B11x80N01 11x8 3-blade https://bit.ly/4nDkxtD
Rotation is counter-clockwise when viewed from the front of the aircraft and are "normal/tractor" type. I'm sure there are many others that will work fine as well.
