George Lendich wrote:

Paul or Butch or others.
Can you tell me what type of Aluminium is used for the prop Hubs,
in the event I wished to buy some material and turn it up myself.
George (doen Under)

We are using 4130 steel George. Much better fatigue characteristics
than aluminum. Perhaps a bit heavier. We will make that up by using
carbon fiber blades.

Paul Lamar

Steve Odle wrote:

2024 in a T-3 or T-321 condition but double check with someone else It has
been 10  years since I made mine for the defiant. This is for prop ext. and
(crush plates for wood props) . All my best-- N34FR

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