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Thread: Shock cord duration

  1. #1

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    Default Shock cord duration

    How often do shock cords have to be replaced? Is this mandarory or
    recommended? Thanks

  2. #2
    Steve Pierce's Avatar
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    Default Re: Shock cord duration

    Nothing mandatory. I replace when they start sagging a lot.

  3. #3

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    Mar 2012
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    Layton, UT
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    Default Re: Shock cord duration

    I was told every 5 years, but I like Steve’s answer


    Sent from my iPhone using ShortWingPipers.Org

  4. #4
    Stephen's Avatar
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    Default Re: Shock cord duration

    Quote Originally Posted by Steve Pierce View Post
    Nothing mandatory. I replace when they start sagging a lot.
    I agree, especially with the "....a lot." part. Soft bungees are much more pleasant for landing.
    "You can only tie the record for flying low."

  5. #5
    Frank Green's Avatar
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    Default Re: Shock cord duration

    If you make a sharp turn and taxi about 10 feet and she's still sagging it's time
    -Super Stub-

  6. #6

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    Indian Hills Airpark AZ 2AZ1
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    Default Re: Shock cord duration

    Mine were over 10 years old when I finally replaced them.
    Paul
    Salome, AZ

  7. #7
    Glen Geller's Avatar
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    Default Re: Shock cord duration

    Marc,
    During your annual you should remove the seat(s) and the "leather" cover from the shock tower, and inspect the bungees visually.
    If there are a lot frayed threads or rubber bands, ask your A&P/IA to give an opinion.
    If they are dirty and/or oil soaked they will degrade more quickly (and you may have other problems related to oil that you might want to address.)
    If you have not replaced bungees on a Piper Hydrosorb you should get help from someone with experience, it's tricky and can be dangerous.
    Several videos on YouTube show how to use the several tools available. Google "replacing bungee shortwing" for a few discussions and videos.
    Glen Geller
    1955 PA22-150 "One For Papa!"

  8. #8

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    Default Re: Shock cord duration

    Thank you all!!-Ed

  9. #9
    McDaver63's Avatar
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    Default Re: Shock cord duration

    Speaking of bungees, has anybody ever rigged up some kind of safety cables ,similar to the ones they put on Cubs, for a Shortwing bungee/ hydrasorb setup?
    Both optimists and pessimists contribute to society. The optimist invents the aeroplane, the pessimist the parachute

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