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Thread: Heading indicator

  1. #1
    Flyjeep's Avatar
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    Default Heading indicator

    I have the original heading indicator that is like the compass and only see the edge. I have seen newer ones that has the numbers like a clock face. On those planes there is a gauge in the hole under it where the adjustment knob was. What is it? I didn't find it on the parts catalog.

  2. #2
    Glen Geller's Avatar
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    Default Re: Heading indicator

    Could you post a picture of what you mean?
    It's not clear what you are asking.

    GG
    Glen Geller
    1955 PA22-150 "One For Papa!"

  3. #3
    Flyjeep's Avatar
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    Default Re: Heading indicator

    68A7EA0C-DD0F-4257-AE1F-51A051C4345E.jpeg

    Its right under the heading ind.
    pulled from this video https://youtu.be/Q72DD2QZbQo
    Last edited by Flyjeep; 04-08-2019 at 11:34 PM.

  4. #4

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    Default Re: Heading indicator

    I may be dead wrong , but it looks like a suction gauge. Not sure.

    Sent from my SM-G960U using Tapatalk

  5. #5
    walt.buskey's Avatar
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    Default Re: Heading indicator

    Looks just like the "replacement" suction gauge in my -22.

    DSC04444.JPG

  6. #6
    Administrator Steve Pierce's Avatar
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    Default Re: Heading indicator

    Someone put a vacuum suction gauge in the hole where your original AN direction gyro adjustment knob was.

  7. #7
    Flyjeep's Avatar
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    Default Re: Heading indicator

    Thank you. I had seen it before and didn't think much about it until I realized that if I upgrade the gauge it would leave a hole.
    I'd like to at some point go electronic and eliminate the vacuum system all together.
    Looking at the av30 from https://aerovonics.com/products
    Last edited by Flyjeep; 04-09-2019 at 12:25 PM.

  8. #8
    Glen Geller's Avatar
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    Default Re: Heading indicator

    Just curious, Flyjeep, does that suction gauge indicate correctly when the engine is running?
    Since you were unsure what it was, I hope you understand it's function.
    Engine off, needle to zero. Engine running, needle in the green. The needle typically vibrates a bit in the zone.
    No disrespect intended, just want to be sure you know what it does, and it is indicating proper vacuum system function.

    GG
    Glen Geller
    1955 PA22-150 "One For Papa!"

  9. #9
    Flyjeep's Avatar
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    Default Re: Heading indicator

    Quote Originally Posted by Glen Geller View Post
    Just curious, Flyjeep, does that suction gauge indicate correctly when the engine is running?
    Since you were unsure what it was, I hope you understand it's function.
    Engine off, needle to zero. Engine running, needle in the green. The needle typically vibrates a bit in the zone.
    No disrespect intended, just want to be sure you know what it does, and it is indicating proper vacuum system function.

    GG
    It's not mine I lifted the picture from a you tube clip. I was looking to fill the hole if I upgrade the gauge. My plane has no vacation gauge.

  10. #10
    Flyjeep's Avatar
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    Default Re: Heading indicator

    This is what I'd like to do. They should be certified soon. Could loose the vacuum system. My gauges are 60 years old and could use a refresh for a little more I can go digital. But this is down the list $$.
    Attachment 15034

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