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Thread: pneumatic stall warning

  1. #1

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    pneumatic stall warning

    Does anyone know where to look for a stall warning scoop. I have a 1967 Cessna 180 (with a pneumatic stall warning system.) I took my stall horn out which started to work fine after I cleaned it. So i grabbed a rag and began sucking on the old stall horn and it didn't work...lol then I realized the plastic scoop that sits on the inside of the the leading edge of the left wing was totally cracked out. I have looked online for a while and have only found scoops for Cessna 150's or 172's. I do have a robertson stol kit I'm just not sure what scoops will work, if they all would work, or if I should install an electric stall system.

  2. #2
    www.SkupTech.com mike mcs repair's Avatar
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    Just a guess here, but I think all the wings are same shape up there till sometime in late 1972


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    Lots of aircraft salvage yards around the country. Do a internet search they should pop up.
    DENNY

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    Quote Originally Posted by mike mcs repair View Post
    Just a guess here, but I think all the wings are same shape up there till sometime in late 1972


    Sent from my iPhone using SuperCub.Org



    Ok cool, I found some wings from a 1953 180 going to check today. Thank You.

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    Thanks Denny, going to check a few more out today.

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    Skywagon City.

    Scoop? I'm having a hard time understanding what you're describing. Is it a Robertson thing? My camberlift leading edge doesn't have a scoop.

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    Quote Originally Posted by stewartb View Post
    Skywagon City.

    Scoop? I'm having a hard time understanding what you're describing. Is it a Robertson thing? My camberlift leading edge doesn't have a scoop.



    I didn't even know how the stall warning worked until I had to investigate why it quite working. It isn't a robertson stol thing, if you have a horn in the leading edge wing root of your left wing, I would think you have a scoop on the other end of the plastic tube connected to your horn. I don't know what its called, exactly, but its shaped to start sucking air through the stall warning system. This makes the horn start to make noise about 5 to 10 mph over your stall speed. You may have an electric stall warning? I'm not sure.
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    www.SkupTech.com mike mcs repair's Avatar
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    part 7 (click image for bigger)

    Screen Shot 2019-02-04 at 6.51.42 PM.png

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    www.SkupTech.com mike mcs repair's Avatar
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    www.SkupTech.com mike mcs repair's Avatar
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    thanks mike

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    www.SkupTech.com mike mcs repair's Avatar
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    Quote Originally Posted by ridiculousness View Post
    thanks mike
    google is your friend....

  15. #15

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    Quote Originally Posted by mike mcs repair View Post
    google is your friend....

    Man I ended up fiberglassing my old stall scoop, two layers on the front and one layer on the back. I looked all over, although i think sutton might have some in palmer. McFarlane doesn't make them anymore skywagoncity didn't have them, and everyone else i got ahold of called me back to tell me they didn't have it. The part number was superseded like three times. So most places have the horn but not the scoop.
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  16. #16
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    Quote Originally Posted by ridiculousness View Post
    Ok cool, I found some wings from a 1953 180 going to check today. Thank You.
    Dunno when they changed it, but my 53 180 has a vane type stall warning gizmo out on the wing-- not the suction type.
    My 1969 C150TD did also.
    Cessna Skywagon-- accept no substitute!

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