Bearhawk Aircraft Bearhawk Tailwheels LLC Eric Newton's Builder Manuals Bearhawk Plans Bearhawk Store

Announcement

Collapse
No announcement yet.

Finding Appropriate Cowl Fasteners

Collapse
X
 
  • Filter
  • Time
  • Show
Clear All
new posts

  • Finding Appropriate Cowl Fasteners

    I've seen a few discussions here... But, I have yet to find anywhere the outright detail of the exact fastener combination for a flush mounted cowling screw.


    I prefer a flush mount vs. pan head. And I understand the benefits of cadmium plated vs. SS

    AS carries the MS24694 machine screw and the K1100-08 dimpled nut plate. Is this the appropriate combination?

    Also, I assume it is appropriate to use the G-8 Tinnerman Washer in this combination.

    Or, do I have this all wrong?

    Thanks!
    You do not have permission to view this gallery.
    This gallery has 3 photos.
    Rob Caldwell
    Lake Norman Airpark (14A), North Carolina
    EAA Chapter 309
    Model B Quick Build Kit Serial # 11B-24B / 25B
    YouTube Channel: http://bearhawklife.video
    1st Flight May 18, 2021

  • #2
    I think most builders use quarter turn fasteners.

    I ordered mine from here but can't remember if I used the 2000 or 4000 series.
    Scratch Built 4-place Bearhawk. Continental IO-360, 88" C203 McCauley prop.

    Comment


    • #3
      If you're referring to the cowl doors most folks are using some kind of quarter turn like Whee said. I'm considering using a piano hinge like this example:


      If you're asking about the other peripheral fasteners I'm just using regular K1000-06 nutplates and MS24693 #6 screws.
      Dave B.
      Plane Grips Co.
      www.planegrips.com

      Comment


      • #4
        Ooh yeah, good catch Archer. It didn't even cross my mind that Rob was asking about cowling screws Sorry Rob.

        We used K1100-08 nut plates but I can't remember if we used 507 or 509 flush screws.
        Scratch Built 4-place Bearhawk. Continental IO-360, 88" C203 McCauley prop.

        Comment


        • #5
          Originally posted by Archer39J View Post
          If you're referring to the cowl doors most folks are using some kind of quarter turn like Whee said. I'm considering using a piano hinge like this example:


          If you're asking about the other peripheral fasteners I'm just using regular K1000-06 nutplates and MS24693 #6 screws.
          I am referring to the ENTIRE cowling system. I do not want to rivet everything together. I want to have complete access. I saw a Husky last weekend with this fastener configuration. The owner said he loves it.
          Rob Caldwell
          Lake Norman Airpark (14A), North Carolina
          EAA Chapter 309
          Model B Quick Build Kit Serial # 11B-24B / 25B
          YouTube Channel: http://bearhawklife.video
          1st Flight May 18, 2021

          Comment


          • Archer39J
            Archer39J commented
            Editing a comment
            Same, I'm using screws everywhere I can for easier access.

        • #6
          Thanks guys! For the record and for others coming through this post... I have ordered MS24693 screws and K1100 dimpled nut plates. Is anyone using a tinnerman washer between the screw and nutplate?
          Rob Caldwell
          Lake Norman Airpark (14A), North Carolina
          EAA Chapter 309
          Model B Quick Build Kit Serial # 11B-24B / 25B
          YouTube Channel: http://bearhawklife.video
          1st Flight May 18, 2021

          Comment


          • jaredyates
            jaredyates commented
            Editing a comment
            I only use the washer on fiberglass, no reference to back that up other than personal preference.

        • #7
          Originally posted by robcaldwell View Post

          I am referring to the ENTIRE cowling system. I do not want to rivet everything together. I want to have complete access. I saw a Husky last weekend with this fastener configuration. The owner said he loves it.
          I am confused by the above quote.

          Bob's patrol Book uses no rivets, and offers complete access. Correction.....rivets attach the R and L cowl door hinges the cowl top section. Bob's plan uses eight 1/4 turn fasteners to secure the cowl door in the closed position. It attaches the upper center section and lower cowl to the nose bowl and firewall flange using #8 screws and cut plates.

          Thats how I plan to do it. But I like the hinge pin idea mentioned by Dave to secure the cowl door closed instead of 1/4 turn fasteners. I am keeping an open mind about that.
          Last edited by Bcone1381; 11-10-2018, 10:30 AM. Reason: clarification
          Brooks Cone
          Southeast Michigan
          Patrol #303, Kit build

          Comment


          • #8
            Different Strokes . Cowling locking system . Stinger
            You do not have permission to view this gallery.
            This gallery has 5 photos.

            Comment

            Working...
            X