^Welcome!
Catto Propellers has been in the business of design, analysis and manufacturing of composite propellers for the Long Eze, Cozy, Velocity, RV-4, RV-6, Lancair and many other homebuilt aircraft for over 10 years.  With the first composite propeller being made back in 1989 for an 0-320, almost 1000 propellers have been made for applications from a 1hp electric motor up to a turbo charged 350hp IO-540.  Several world recognized speed and altitude records have been set and still stand with Catto Propellers.

For those of you that have not seen one of the Catto Composite Propellers, they are far more than just a wood core propeller with fiberglass on the outside.

The propellers start as a laminated maple blank, then bias plies of fiberglass are laminated over the wood core.  Up to 36 plies are used on the three bladed propellers.  On the blade itself, the laminates of fiberglass build up to .080 inch thick from root to tip.  The fiberglass is more than a protective shell, it is the structural member of the blade.

The wood is cut away around the perimeter of the blades and a pure fiberglass structure is built up around the leading edge, tip, and trailing edge.  The high fiber content in the leading edge allows for operation in rain conditions with minimal leading edge deterioration.

To prevent any working between metal to epoxy matrix surfaces when the propeller is bolted onto your engine hub or extension, a .125 inch thick plate of aluminum is bonded onto the hub matching face of the propeller. Your installation now has metal to metal matching faces.

The propellers are finished in a PPG automotive acrylic urethane paint with standard colors available.

The average two bladed propeller cost about $900 for 60 inch diameter two bladed for a O-235 up to $1650 for a three bladed for a IO-360.

Custom design and analysis is available if you are interested.