High Time (oz5741)

 

High Time (oz5741) by John Burkam from American Modeler 1967 - plan thumbnail

About this Plan

High Time. Free flight helicopter model.

Quote: "Steve, Here is the first gear driven main rotor free flight IC helicopter to be published by John Burkam. John’s publication was construction article of his free-flight model 'High Time' June 1967 in American Modeler, a true torque reaction tail rotor helicopter. The plans were drawn up in October of 1966. I believe that 'High Time' was entered and flown at the 1966 AMA nationals. The free-wheeling device for the main rotor used a screw like thread so that when the engine quit, the collective pitch would automatically change to negative so that it could the rotor could free wheel allowing the model to come down safely. He also used a paper clip on the rotor shaft much like automobile tires that use loose balls around the perimeter of the wheel for self balancing. Very Clever!"

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High Time (oz5741) by John Burkam from American Modeler 1967 - model pic

Datafile:
  • (oz5741)
    High Time
    by John Burkam
    from American Modeler
    June 1967 
    24in span
    IC F/F
    all formers complete :)
  • Submitted: 23/07/2014
    Filesize: 647KB
    Format: • PDFbitmap
    Credit*: rchopper56

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