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    John Spratt

    Rans S20
    Rotax 914
    Airmaster AP332
    Whirlwind R70W

    We finished our FAA required 40 hour flight testing last week and the Airmaster prop has been a joy to operate. The initial installation was simple and well documented.


    The Airmaster propeller takes full advantage of the 914’s full takeoff power to 8,000 feet and full climb power to 16,000 feet pressure altitudes with 75% cruise power at even higher altitudes. Cruising at 17,500 feet the Airmaster allows a 32% faster cruise than a fixed pitch prop at sea level."

    -John Spratt

    Products specifications
    Aircraft Rans
    Engine Rotax 914
    Hub AP332
    Blade Make Whirlwind
    Diameter 70in (1778mm)
    Spinner Diameter 11.2in (284mm)
    Products specifications
    Aircraft Rans
    Engine Rotax 914
    Hub AP332
    Blade Make Whirlwind
    Diameter 70in (1778mm)
    Spinner Diameter 11.2in (284mm)