ACP Composites: Good source for raw composite material and resins

APC Props: Most active USA propellor Supplier

Cox Engines: Best source for parts and available for the old Cox 0.049 engines

Goodwinds: Various composites including pultruded carbon fiber pre-forms

RC Groups: Venerable RC discussion forum, lots of data and activity

Wind Catcher RC: Good source for EPP of any thickness