Agreed on thread holding ability. I was referring only to the prop hub.

The S.G. figures indicate a UHNW hub would weigh only 35% of an Alum prop hub. For a 65% weight reduction on one former metal part seems logical.

The temp of the output shaft seems to be my major concern. If it melted the UHMW at shaft contact you would be have to pry it off just like a pressed fitting! Maybe some silicone spray or lube would be good insurance on the first test stand run.

What type of weights are the 'typical' prop hub used on planes?

mikenlapaz