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Thread: PA-12 / 14 Firewall Drawings

  1. #1

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    PA-12 / 14 Firewall Drawings

    Trying to find drawings for the PA-12/14.. any info would be welcome!

  2. #2
    Steve Pierce's Avatar
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    What is the part number, that will help me find the drawing if I have it.
    Steve Pierce

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    I am not sure what it is.

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    New member here, I'm looking for the same drawing. The IPC calls out 24275-00 for early airplanes and 10691-00 for 12-354 and subsequent. The latter part number may be just a Univair number as that is the IPC I have, not an original. That is the part number for the fuselage cowl assembly, not just the firewall.

    Also, if anyone could share any pictures of the bottom of the boot cowl that would be appreciated. My project came with a new Univair boot cowl that is very...unfinished.

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    Southern Aero's Avatar
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    Casey

    I have a complete PA12 boot cowl/firewall left over from an earlier project. Really good condition I can get you some pics or measurements off of if that would help. I have PA12 fuselage prints. They are the large, original prints that could be copied. I don't have them digitized.
    ......... It doesn't cost any more to go first class! You just can't stay as long.
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  6. #6
    flybynite's Avatar
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    Do these help?

    Click image for larger version. 

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    Wayne
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  7. #7
    www.SkupTech.com mike mcs repair's Avatar
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    http://www.fadodge.com is where I get my firewalls... he will make them out of stainless or titanium they have a nice lip formed on them

    https://photos.app.goo.gl/oiBAbRz69vR1eM4i9

    http://www.fadodge.com/pa-12-stainless-steel-firewall/

    http://www.fadodge.com/pa-12-titanium-firewall/

  8. #8
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    Click image for larger version. 

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ID:	44437This is an Atlee Firewalli
    PA-12 N418BS
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  9. #9

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    Quote Originally Posted by mike mcs repair View Post
    http://www.fadodge.com is where I get my firewalls... he will make them out of stainless or titanium they have a nice lip formed on them

    https://photos.app.goo.gl/oiBAbRz69vR1eM4i9

    http://www.fadodge.com/pa-12-stainless-steel-firewall/

    http://www.fadodge.com/pa-12-titanium-firewall/
    That Atlee firewall sure looks nice, do you have a drawing you use for making the recess in the lower boot cowl? My skins don't line up very well where the sides meet the bottom.

  10. #10
    Steve Pierce's Avatar
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    Casey, sorry, I don't have either one of those drawings in my collection.

    I didn't like the fluted flange on the titanium firewall I got from Atlee Dodge so I cut it off and shrunk one out of aluminum and riveted it to the firewall like Clyde does.
    https://cubdoctor.com/wp-content/upl...large/pa12.jpg

    https://cubdoctor.com/stainless-firewalls/
    Steve Pierce

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  11. #11
    Steve Pierce's Avatar
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    Quote Originally Posted by rkirk77 View Post
    I am not sure what it is.
    Drawing number is the same as the part number and available in the free parts manual on Univair's website. https://www.univair.com/content/part...ndex.html#p=23
    Steve Pierce

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  12. #12
    www.SkupTech.com mike mcs repair's Avatar
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    Quote Originally Posted by Steve Pierce View Post
    I didn't like the fluted flange on the titanium firewall I got from Atlee Dodge s
    atlee has new tooling now, no more fluted edges nice and smooth lips

  13. #13
    Steve Pierce's Avatar
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    Quote Originally Posted by CaseyO View Post
    That Atlee firewall sure looks nice, do you have a drawing you use for making the recess in the lower boot cowl? My skins don't line up very well where the sides meet the bottom.
    I had to drill the rivets out of the center of the last Univair bootcowl I installed and then pulled everything up and made an inside doubler. There are some pictures in this photo album.

    https://photos.app.goo.gl/fu4cKYK2yQclL1An2
    Last edited by Steve Pierce; 09-12-2019 at 04:52 PM.
    Steve Pierce

    Everybody is ignorant, only on different subjects.
    Will Rogers

  14. #14

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    Thanks for all the input, if my project had not come with a new Univair fuselage cowl assembly I would definitely get a firewall from Clyde or Atlee. I'm trying to control costs even though I know that's a lost cause with an airplane.

    Steve, do you have a link to the photo album you mentioned?

    Also, sorry to rkirk77 for jumping all over his thread. I'll be starting plenty in the future once I get everything organized.

  15. #15
    Steve Pierce's Avatar
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    Sorry, I forgo to include it. https://photos.app.goo.gl/fu4cKYK2yQclL1An2
    Steve Pierce

    Everybody is ignorant, only on different subjects.
    Will Rogers

  16. #16
    KJC's Avatar
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    Regarding fabrication of boot cowls on a -12. If you are making new, face the lip of the cowl forward. This is how the later 47s and PA-14 were made. If you don’t, you will have to fabricate or reuse the L brackets to hold the cowl support brackets. See the above picture of the blue one. It is the older style with the L brackets. By facing the lip forward you can order the galvanized brackets Clyde Smith makes and rivet them between the boot cowl and the firewall. Makes everything stronger. Not hard or expensive. Give Clyde a call.
    PA-12 N418BS

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