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  • Bearhawk Patrol Scratch builder

    Hello all. I am actually a member of a forum for about a half year already and I am building my patrol in Torrance California for about the same time. I'm still working on my wings. So far all ribs were formed and at the moment im working on my spars. I don't want this project to be a slow builder so I dedicate a lot of time in that. I heard a lot about unfinished projects too, so to keep me excited about the end result I have Zenith ch300. It is not the same thing as Bearhawk, but at least I still remember how to fly I'm excited to be here and will be happy share my experience building the airplane!
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  • #2
    That is great progress and a nice looking Zenith!

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    • #3
      Nice progress. Welcome to the club.
      Scott Ahrens
      Bearhawk Patrol Plans Built
      #254

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      • #4
        You look like you are making great progress. Well done so far. Keep up posted with your progress. Love to see the photos. Please ask lots of questions. Many of us have already made the mistakes we hope to help you not make.
        John Snapp (Started build in Denver, CO) Now KAWO -Arlington Washington Bearhawk Patrol - Plans #255 Scratch built wing and Quickbuild Fuselage as of 11/2021. Working on skinning the left wing! -Ribs : DONE -Spars: DONE, Left wing assembly's: DONE., Top skins : DONE YouTube Videos on my building of patrol :https://m.youtube.com/user/n3uw

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        • #5
          Welcome aboard, and yes ask lots of questions. At your rate of progress I'll soon be the one asking you the questions.
          Mark
          Scratch building Patrol #275
          Hood River, OR

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          • #6
            Thank you guys!

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            • #7
              In my recent post we were discussing if it is possible to fix the wrong hole on main spars that I made. With some paper "plate emulator" I have managed to cut the plate of a right size and shape. As you can see on the plate, there is a spot where 3/16 hole supposed to be according to the drawing right next to my modification that worked just fine. Not proud of my mistake but happy that I was able to fix it. Keep building!
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              • #8
                During my build I have had to slowly adapt. When I started I would try to get things accurate to a thousandths. That did not last long. The next thing I did was try to get everything as lite as possible. I now realize that was a waist of time.

                For example, the angles that attach to the spar probably are called out as something like 1/2x1/2. That is what you would do if you wanted it as lite as possible. That is not what you would do if you were trying to finish in a reasonable amount of time.

                I think I recall N3UW saying make them 9/16x9/16. I should have listened to him. If you want to go faster make the flanges bigger then 1/2x1/2 . The smaller flanges are a pain to drill without violating rivet edge distances. And even latter you will have to grind down squeezer dies to fit in such close quarters.

                I have to use mental tricks. You know like when the dentist is hiding the novacain shot behind there back when they are approaching you. Pretend you do not know whats up.

                In a similar way I make them 9/16x9/16 now and tell my self that after all of the drilling and making sure that the holes are not near the edge - that I can go back and file the edge down a little.
                I know that I will never go back and do that but it helps me move forward.
                Stan
                Austin Tx

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                • #9
                  Thanks Stan! Good timing as I will start working on angles soon!

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                  • #10
                    Originally posted by sjt View Post
                    During my build I have had to slowly adapt. When I started I would try to get things accurate to a thousandths. That did not last long. The next thing I did was try to get everything as lite as possible. I now realize that was a waist of time.

                    For example, the angles that attach to the spar probably are called out as something like 1/2x1/2. That is what you would do if you wanted it as lite as possible. That is not what you would do if you were trying to finish in a reasonable amount of time.

                    I think I recall N3UW saying make them 9/16x9/16. I should have listened to him. If you want to go faster make the flanges bigger then 1/2x1/2 . The smaller flanges are a pain to drill without violating rivet edge distances. And even latter you will have to grind down squeezer dies to fit in such close quarters.

                    I have to use mental tricks. You know like when the dentist is hiding the novacain shot behind there back when they are approaching you. Pretend you do not know whats up.

                    In a similar way I make them 9/16x9/16 now and tell my self that after all of the drilling and making sure that the holes are not near the edge - that I can go back and file the edge down a little.
                    I know that I will never go back and do that but it helps me move forward.
                    I have always thought of myself as weight conscious when building things. But building an airplane, finally, I have learned a huge amount. Minimum edge distance, is also maximum edge distance. Any more material, and it is just dead weight. The extra material is adding nothing structurally, just extra weight.

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