Skull cap/spinner

[Philco]

Lost my "Skull cap" this morning. The nutplate that held the original had been replaced with a riveted nut. Spinner bolt broke from inside the nut and skull cap departed downward taking some paint off the prop. Any suggestions for a better "fix" appreciated.

I know enclosed cowlings depend on the "skull cap/spinner" for directing airflow into and over the cylinders for proper cooling. Since Cub cylinders are already outside with eyebrows "scooping" air, is it necessary to have a Skull Cap or are they primarily for looks?

 

[skipster]

 

[Philco]

 

[bob turner]

 

[Blue Jay 3]

 

[JimC]

 

[jimrice]

 

[43-491]

 

[Philco]

 

[nrpetersen]