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  • Source: Long Harlequin 933

    • The Long Harlequin is a two-cylinder horizontally opposed aircraft engine.


    Design and development


    The Harlequin engine was developed as a replacement to the Heath-Henderson B-4 engine used on the Long Henderson Longster homebuilt aircraft. The cylinders were based on a 74 cubic inch Harley Davidson JD Engine with connecting rods from Continental built Star auto engine. The builder was expected to machine their own crankshaft, Les Long cast and sold crankcases


    Applications


    Long Longster


    Engines on display


    Eagles Mere Aircraft Museum
    Dart Airport Museum in Mayville NY
    Oregon Aviation Historical Society Cottage Grove Oregon
    Glen Curtis Museum
    Hammondsport, New York
    Two other examples known in private collections


    Specifications (Long Herlequin)




    = General characteristics

    =
    Dry weight: 90lb


    = Components

    =
    Fuel system: Single carburetor
    Cooling system: Air-cooled


    = Performance

    =
    Power output: 30hp @2650rpm


    References

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