Hi Micheal,

When I was racing Giant Scale Formula 1 with the Aerrow 75cc engines, we ran the Super Cool Props from Australia. The website is supercoolprops.com

I ran the original version of the 18 X 20, but I heard he redesigned a new one....contact Stuart on he can help you. Your other source may be Chuck Winters who lays up a lot of the Giant SCale Composite props. You can get his info from APC or the USRA giant scale racing site.

Kev