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Thread: Firewall blanket advice?

  1. #1

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    Firewall blanket advice?

    What is the best firewall blanket for the PA-18? Price? Availability? Specs?

    Thank you,

    Vickie

  2. #2
    behindpropellers's Avatar
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    Re: Firewall blanket advice?

    Quote Originally Posted by tamarack
    What is the best firewall blanket for the PA-18? Price? Availability? Specs?

    Thank you,

    Vickie
    Add J-5/PA-12 to this question's answers.

    Tim
    Piper J-5A C-90 N40877
    J-5 Project Pictures

  3. #3
    CubLite's Avatar
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    Just bought the Wag-Aero stock for the J-3. 2 Feet, by 36 inches. Was $20.25 running foot, so $40.50 plus shipping- $12- thought was way too high. Could not find one ready made to fit.

    Pat

  4. #4
    Steve Pierce's Avatar
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    The last two I bought were from AirTex. Have to look up price etc. It fit well.
    Steve Pierce

    "When everything seems to be going against you, remember that the airplane takes off against the wind, not with it."
    Henry Ford

  5. #5
    Darrel Starr's Avatar
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    I'm getting a lot of heat through the stainless firewall with the big Leading Edge muffler setting there real close to it. I am thinking of trying to slide a piece of "Koolmat" (sold by Aircraft Spruce) between the muffler and firewall -- might be just enough space for this 0.070 thick mat. Has anyone tried this or possibly have another solution to the heat soaking through the firewall? I have an Aircraft Spruce normal quilted cover on the inside that looks good but that probably does little good to stop the heat transfer.

    Thanks, Darrel
    When a prang seems inevitable, endeavor to strike the softest, cheapest object in the vicinity, as slowly and gently as possible. advice given to RAF pilots during W.W.II.



  6. #6
    Speedo's Avatar
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    Check out the products used on racing cars to isolate heat sources. Here's one source: http://www.pegasusautoracing.com/keywordsearch.asp . Use the search term "insulation" and you'll find many alternatives.

    Eric
    Speedo

  7. #7
    bobnall's Avatar
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    I used Airtex. About $70 if I remember, is cut to fit, and is approved. Had to do a little trimming, but nothing major. Was an easy fit, and lots of color choices. I went with the Dove Grey.

    Bob

  8. #8
    Darrel Starr's Avatar
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    Eric, thanks for that Link - great stuff:

    Here are examples of the material I am thinking of -- one from Aircraft Spruce and one from Pegasus. Anyone have a similar issue? Anyone trying a similar product?


    Thanks, Darrel
    When a prang seems inevitable, endeavor to strike the softest, cheapest object in the vicinity, as slowly and gently as possible. advice given to RAF pilots during W.W.II.



  9. #9
    Steve Pierce's Avatar
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    I have used the Koolmat on fiberglass cowlings that were too close to the exhaust. The cowl quit getting soft.
    Steve Pierce

    "When everything seems to be going against you, remember that the airplane takes off against the wind, not with it."
    Henry Ford

  10. #10
    FdxLou's Avatar
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    I have the Leading Edge Exhaust on my Smith Cub. The heat transfer was unbearable until I put Koolmat on BOTH sides of the firewall...only one side will not do it.

    I did all this after the plane was flying...what a pain. I had to remove the muffler to do the front side and cut sections to go on the inside. I put it on with hi temp ( Red ) RTV. No problems in 800 hrs.

    Lou

  11. #11
    Darrel Starr's Avatar
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    Lou
    Your comments really help!
    Thanks, Darrel
    When a prang seems inevitable, endeavor to strike the softest, cheapest object in the vicinity, as slowly and gently as possible. advice given to RAF pilots during W.W.II.



  12. #12

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    I visited a local aviation upholstery shop and they have a nice approved firewall blanket material. Grey on one side, with a diamond shaped pattern. Fiberglass or similar in the middle. I am going to supply a cad drawing of my widebody firewall, and their machine will cut it precisely. They will then sew a 'closing strip' around the edges, including the inside of the round holes. If there are others interested, I could get more than one made at the same time to help offset some of the setup costs. (send me a pm)> I need some help on how many hoes to put in it: so far:

    1) 4 engine mount holes
    2) fuel pipe)
    3) starter cable
    4) cabin heat
    5) ??

    Aerodon

  13. #13
    aktango58's Avatar
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    oil press/temp
    P leads
    electric
    I don't know where you've been me lad, but I see you won first Prize!

  14. #14
    Bugs66's Avatar
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    I bought Airtex and was impressed with the quality.

  15. #15
    gdafoe's Avatar
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    Anybody used ARMAFLEX for the firewall? I'm using it on some of the other panels for sound deadening. Also thinking of using it inside the firewall.
    Gerald

  16. #16
    this would be a title NimpoCub's Avatar
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    Quote Originally Posted by Aerodon
    I need some help on how many hoes to put in it: so far:

    1) 4 engine mount holes
    2) fuel pipe)
    3) starter cable
    4) cabin heat
    5) ??
    Don't forget your tach cable, it goes ~ top center, all by itself.
    Nimpo Lake Logan... boonie SuperCubber
    200mi (300km) from nearest stoplight... just right! - "Que hesitatus fornicatus est"

  17. #17

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    Thanks Logan, I found the 'firewall layout' picture on my CD Rom. Also the firewall drawing (#12365) which fortunately matches my widebody firewall. Now I know it starts getting wider at that point. Here are pictures of the blanket material, I'm planning on getting 5 made up.

    Hope the pictures work,

    Aerodon






  18. #18
    kase's Avatar
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    Airtex Firewall.


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