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  1. #1

    Join Date
    Nov 2012
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    Needham, MA
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    To cowl or not to cowl

    I recent acquired a new Joss Stik (balsa covered foam wing version) at a club auction. It has a new 90 como (super tiger). I plan to use a 14x6 prop.
    This looks to be a very sturdy plane with a plywood and fully sheeted balsa fuselage. This sport plane could survive my rough landings.
    I was thinking of making it a little more Eindecker looking by adding a cowl.
    This could be made out a small aluminum sauce pan or even a clorax bleach bottle with some fiber glass reinforcing. I was concerned that the
    proposed cowl might restrict the thrust generated from the prop. The Stik's fire wall measure 4"x4" and the proposed cowl will be about 6" in dia. The front of the cowl
    will be pretty open to allow air to pass thru and it will attached to the fire wall with some aluminum angle brackets. So, would the cowl greatly reduce performance?

  2. #2

    Join Date
    Feb 2002
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    Keller, TX
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    RE: To cowl or not to cowl

    Sounds like a cool idea. Go for it.
    Sometimes, things are exactly as they appear to be.

  3. #3

    Join Date
    Apr 2004
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    RE: To cowl or not to cowl


    ORIGINAL: coalburner

    ...So, would the cowl greatly reduce performance?
    No, the Joss stick is a heavy drag bucket. Your cowl won't help or hurt it.

    Kurt

  4. #4

    Join Date
    Jan 2013
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    melbournevictoria, AUSTRALIA
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    RE: To cowl or not to cowl


  5. #5

    Join Date
    Oct 2009
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    New Bethlehem, PA
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    RE: To cowl or not to cowl

    If you don't like the engine sitting out there all by itself, you might consider just putting cheeks on it. John


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