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  1. #1

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    OS FS-90 NON SURPASS UNKNOWN PARTS

    Having a tough time making and ID on these parts..

    I know they are for the FS-90 (pre / non-surpass) engine, and I have looked
    at the exploded view of the engine, but I can't seem to locate
    these parts...does anybody recognize them ?

    They are threaded socket worm type screws...

    Thank you!
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  2. #2
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    RE: OS FS-90 NON SURPASS UNKNOWN PARTS

    The pictures show parts bags that have been re-stapled at some time. We have an old exploded engine diagram. Screws such as the ones in your pictures just are not used in the old FS-90. We cannot even find that part number in the FS-90 engine diagram.

    We'd have to guess that those set screws were not original to those packages, but put there by someone previous to you for safekeeping. We cannot locate that part number.
    Bill Baxter, Manager Hobby Services/Futaba Service/North America
    3002 N. Apollo Dr. Ste. 1 Champaign, IL 61822 USA
    Service Phone: 217 398-0007
    Email: hobbyservices@hobbico.com

  3. #3

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    RE: OS FS-90 NON SURPASS UNKNOWN PARTS


    My best guess is that these are for prop retainer.

    Regards

  4. #4
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    RE: OS FS-90 NON SURPASS UNKNOWN PARTS

    Those look like 2-3mm or so set screws (also known as "grub screws" in other parts of the English-speaking world). They do not look like screws used to retain propellers.
    Bill Baxter, Manager Hobby Services/Futaba Service/North America
    3002 N. Apollo Dr. Ste. 1 Champaign, IL 61822 USA
    Service Phone: 217 398-0007
    Email: hobbyservices@hobbico.com

  5. #5

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    RE: OS FS-90 NON SURPASS UNKNOWN PARTS

    Actually, the package pictured in the background (darker blue header card) has never been opened, the staple
    marks are factory, so this leads me to believe that the screws were used somewhere on the
    engine, or the factory mispackaged them...

    Still a mystery to me!


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