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Piper Pawnee 235 (33% - Hanger 9)

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  • #61
    Rick Shelby designed Sailplane release mechanism

    I can testify that the release is "strong enough" with first hand experience......As I found myself in a Torque Roll attitude with a ballasted Antares at the bottom. Quite the sight to behold and surprisingly stable. The minor concern was the slow decent rate......Sailplane was unable to release so I gave mine a "go" before having to result to any unusual attitude recovery maneuvers.
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    These are some of Rick's photos showing parts

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    • #62
      beautiful work Scot... and Rick
      Len Buffinton
      Team Horizon Hobby

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      • #63
        Ringing in the New Year with the satisfying aroma of PolyTaK Click image for larger version

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        • #64
          Dizzy with excitement............or maybe it's the Methyl Ethyl Ketone.......

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          Throttle / Choke / header tank install

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          • #65
            Can you see the finish line? It's right there behind the paint cans.

            len
            Len Buffinton
            Team Horizon Hobby

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            • #66
              Installed servo tube down the side of the fuselage to keep them contained.
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              Squared up the top Cowl screw mount and installed a brass threaded insert instead of the blind nut

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              Then the "B" side and the bottom covering.........

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              Picked up a new Slimline Flightline Fueler - 2.5 gal at the AMA Convention in Ontario, CA. Looks like it will hold more that 2.5 gallons by a fair bit.

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              Last edited by MarnochS; 01-10-2018, 01:47 PM.

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              • ARUP
                ARUP commented
                Editing a comment
                Those brass threaded inserts are great! You are getting closer to the paint booth! 'Groovy' marine themed sheet or towel on workbench! lol

            • #67
              Poly-Brush (untinted) sealing of the fabric after it was shrunk to 275-300F.
              Looks like a Fuselage Rotisserie jig is next on the list to aid the finishing process

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              • #68
                Fuselage Tapes.............and .....alas,...."installation aid" .......

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                With the un-tinted polybrush, the Tapes are almost hidden.

                Another oddity is that before I applied the polybrush, the fabric didn't sound all that tight ....kind of a thunk,thunk sound ......after the Poly-Brush it sounds nice and tight....tink tink tink.
                Must be that its glued down to all the wood
                Last edited by MarnochS; 01-14-2018, 02:20 PM.

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                • ARUP
                  ARUP commented
                  Editing a comment
                  Still lurking in the shadows! Nice work! If you're gonna wear 'installation aids' get some 'purdy' ones... like my blue or neon green ones! Are you a bona fide card carrying member of the 'reading glasses' crowd, now?

                • MarnochS
                  MarnochS commented
                  Editing a comment
                  Shadows.....its too dark in hear to see any shadows........

              • #69
                Probably stiffens it a bit too, making the fabric not as soft.
                Len Buffinton
                Team Horizon Hobby

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                • #70
                  Tapes completed ....,,,,,and some Hanger flying....

                  Found a quick pass with a Top Flight Trim Sealing Tool on the edges of the tapes seals them down nicely -----

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                  and, of course, some minor inspiration.

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                  • #71
                    Spark plugs - I was planning on installing some teardrop covers to hide the spark plugs but the Left side plug protrudes a little bit too much for that, and the fact that I can't install the Cowl with both plugs on .....is a limiting factor. I guess I'll go with the backup plan of painting the spark plug caps to match the Cowl.

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                    • #72
                      I had the same issue Scot and did just about the same cut you made. After a month or so I noticed the fiberglass cowl was chaffing the wire on the spark plug where it touches.

                      Love the build....


                      Len
                      Len Buffinton
                      Team Horizon Hobby

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                      • MarnochS
                        MarnochS commented
                        Editing a comment
                        Thank for the heads up on the chaffing - planing on using spiral wire wrap to protect the wires.

                    • #73
                      More Cowl re-configurations. After getting too happy with the Dremel drum sander attachment cutting the exhaust exits, reverted to Rick Shelby's modification.
                      Used 0.015 G10 material and then reinforced with 1oz glass cloth

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                      On the top side, some reinforcement with 6 oz cloth

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                      • #74
                        Some Primer and Masking tape.......

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                        • #75
                          Originally posted by lenb View Post
                          I had the same issue Scot and did just about the same cut you made. After a month or so I noticed the fiberglass cowl was chaffing the wire on the spark plug where it touches.

                          Love the build....


                          Len
                          I wrapped the affected area of the spark plug wire with silicone tape. After 5 years and hundreds of hours of towing there is still no chafing on either the wire or the cowl.

                          Rick

                          Rick Shelby
                          Team Horizon

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