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  1. #4051

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    RE: Hostetler 33% Decathlon

    Merry Christmas and Happy New Year to all the guys654 and gals stilll watching this thread. Joe

  2. #4052
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    RE: Hostetler 33% Decathlon

    Merry Christmas everybody. Just started building one wing. Lucky i got some help today!

    Martin
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  3. #4053
    Kellermann's Avatar
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    RE: Hostetler 33% Decathlon

    Great Martin! Keep the pix coming...
    Merry Christmas to you too
    A good landing is one you could walk away from. A spectacular landing is when the airplane is reusable...!

  4. #4054
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    RE: Hostetler 33% Decathlon

    Hi Marcus,

    Can you tell me what you used on the plane? Oracover? Also do you know which colors these are?
    Thank You the plane is looking outstanding!



    Martin

  5. #4055
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    RE: Hostetler 33% Decathlon

    Thanks Martin! That 35% Decathlon was my new flagship (built and delivered a year ago).

    The covering I always use is Oracover.

    The colors are Oracover (iron-on)
    Standard Colors - 21-010 White and 21-052 Dark Blue
    Orastick (self-adhesive)
    Standard Color - 25-020 Red for Invasion and fuse stripes.

    If you wish, I can send you a pair of scale ACRO stickers (theyΒ΄re done in 35% but at 33% a little oversized nobody will notice the difference)

    Paint on fiberglass parts is automotive enamel, I had the colors matched at a professional paint mixer. Clearcote is also automotive.

    Hope to have helped.

    Marcus
    A good landing is one you could walk away from. A spectacular landing is when the airplane is reusable...!

  6. #4056
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    RE: Hostetler 33% Decathlon

    Hi Marcus,

    Thank you so much. The red at the bottom of the wing is self adhesive aswel? Do you remeber roughly how much you used? Oracover is sold in the USA under the name Ultracote.
    Oracover = Ultracote
    21-010 = HANU870
    21-052 = HANU883
    25-020 = ???

    Martin

    ORIGINAL: Kellermann

    Thanks Martin! That 35% Decathlon was my new flagship (built and delivered a year ago).

    The covering I always use is Oracover.

    The colors are Oracover (iron-on)
    Standard Colors - 21-010 White and 21-052 Dark Blue
    Orastick (self-adhesive)
    Standard Color - 25-020 Red for Invasion and fuse stripes.

    If you wish, I can send you a pair of scale ACRO stickers (they´re done in 35% but at 33% a little oversized nobody will notice the difference)

    Paint on fiberglass parts is automotive enamel, I had the colors matched at a professional paint mixer. Clearcote is also automotive.

    Hope to have helped.

    Marcus

  7. #4057
    Kellermann's Avatar
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    RE: Hostetler 33% Decathlon

    Martin
    I assume Hangar 9 took over the Oracover collection and renamed them under own brand. If I was Oracover I would not allow that. After all, the brand is your most important asset, and in their case, stands for quality. Period.

    You can use Ferri red instead of the Red I mentioned. It was sticking cote as well. But you can Iron-on the stripes as well. Roughly I use 4-5m of white, 6-8 m of Blue and 1,5-2m of red. Remember, all those pinstripes around the starbursts are also red. And itΒ΄s repeated 6 times on the entire plane. ThatΒ΄s why I used sticking folie instead of iron-on.

    Hope that helped.
    Marcus
    A good landing is one you could walk away from. A spectacular landing is when the airplane is reusable...!

  8. #4058

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    RE: Hostetler 33% Decathlon

    see, thats what i said too oracover=ultracote here in the us. at least thats what google came up with.

  9. #4059
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    RE: Hostetler 33% Decathlon

    What are you guys using for the wing tips? I want a little more scale then on the plans.
    Thinking about shaping some urethane foam with the cnc machine then cover it with some glass.

    any other ideas?

    martin

  10. #4060
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    RE: Hostetler 33% Decathlon

    Martin, on mine they are FG parts screwed on just like the fullsize. Send me a scaled drawing of the wing profile, and the chord, and IΒ΄ll check if my tips would fit...

    Marcus

    A good landing is one you could walk away from. A spectacular landing is when the airplane is reusable...!

  11. #4061

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    RE: Hostetler 33% Decathlon

    well, i said i,m not computer savy. i tried to post pics,, but i get file too large errors

  12. #4062
    Kellermann's Avatar
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    RE: Hostetler 33% Decathlon

    Martin, Ken built his carving and shaping balsa blocks, then hollowing them. Lotsa work but nice end result too.
    A good landing is one you could walk away from. A spectacular landing is when the airplane is reusable...!

  13. #4063
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    RE: Hostetler 33% Decathlon

    Hi Marcus,

    See PDF for last rib shape. This drawing includes 1/8inch(3.18mm) sheeting both sides and trail and leading edge balsa. Measurements in drawing are in Millimeters.
    Yeah was thinking balsa blocks as well but they are not locally available. Since i have a CNC machine it should not be so hard to make one from Foam.
    But lets see if yours fit.

    Martin



    docs.google.com/open


  14. #4064
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    RE: Hostetler 33% Decathlon

    Hi Martin
    considering my plane is 35% my wingtips would obviously be bigger.
    Profilewise theyΒ΄re more bulged as I use the original NACA 2412 profile, and WH uses a flatter profile.
    Chordwise mine are 557mm against yours at 538mm... that gives you some 19mm difference to cut off at the end.

    Means my wingtips would fit but not without some reworking on them: IΒ΄d suggest splitting them chordwise, trimming off "the excess (some 5mm or roughly 3/16 to 1/4")" and rejoining them to make them a little flatter. Also, before joining them, trimming off some 19mm (roughly some 3/4") on the rear (parallel to the slanted TE). Sand all edges flush and voilΓ‘, you got some nice pair of FG tips to screw onto your wings. Less fussing than carving molds and laminating.

    Can be yours for USD 80,- a pair, S&H included (remember, I live in Brazil)...). You must have a PayPal account.
    Would like to show a picture of my tip, but the server tells me repeatedly they have an internal error.


    Marcus
    A good landing is one you could walk away from. A spectacular landing is when the airplane is reusable...!

  15. #4065

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    RE: Hostetler 33% Decathlon

    Hey Martin, I made my wing tips out of that pink insulating foam(it also comes in blue ) that you get at a lumber yard. I cut the basic shape with the bandsaw, then worked down to the final shape with rasp and coarse sand paper, got them exactly how I wanted them, then glassed them . They came out good. I'll put some pics on sometime but today is not good as we got hammered with snow over night. They are reeasonably light not sure if as light as balsa would have been, but cheaper. Joe

  16. #4066

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    RE: Hostetler 33% Decathlon

    well only took me a few days to out how to resize photos.
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  17. #4067

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    RE: Hostetler 33% Decathlon

    fuse, stab and fin about done. now to start on the wings
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  18. #4068

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    RE: Hostetler 33% Decathlon

    Hey Bob, Look-in good. You have a lot more abition than I do. I just can't seem to get my butt in gear. It's all built just have to get servos mounted and push-rods made then get to covering.

  19. #4069

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    RE: Hostetler 33% Decathlon

    a quick heli flight in the front yard for new years day and back to the wing construction
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  20. #4070
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    RE: Hostetler 33% Decathlon

    I don't see a sailplane tow hook installed yet, what's going on? ;-)
    RickP

  21. #4071

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    RE: Hostetler 33% Decathlon

    don't worry, it will be there.

  22. #4072

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    RE: Hostetler 33% Decathlon

    so, i have a question. it appears to me that the 6-32 inserts in the spars would weaken the load carring abilty by a bunch. no one has had any issues with this?

  23. #4073

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    RE: Hostetler 33% Decathlon

    Hello Bob, Yes I have been concerned with using those threaded inserts, looked at other options and decided to use them. there is a huge amount of stress at those locations especially where the struts mount. I couldn't find another way without some other problem popping up. If you have any good ideas please let me know. I would change to something else if it looks good in a heart beat. I've never posted a question about these inserts, but have never read where they have failed on the Hostetler design. Maybe the plywood webbing in that area is all it needs. I agree with you, the inserts really weaken the spar.

  24. #4074
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    RE: Hostetler 33% Decathlon


    ORIGINAL: Bobt2

    so, i have a question. it appears to me that the 6-32 inserts in the spars would weaken the load carring abilty by a bunch. no one has had any issues with this?
    Bob,
    This thread is huge and I don't have an image of the area in question. Can you please post a photo of the area, or point me to a PDF of the plans so I can take a look and comment?
    Kind regards,
    Rick

  25. #4075

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    RE: Hostetler 33% Decathlon

    rick, you are the engineer. theres a 1/4 x 1/2 basswood spar.they want to drill into the spar in 2 places, 1 close to the root to hold the wing and struts on.well, when you drill 1/4 " hold into a 1/2" wide spar, theres not a lot left for strength.hard to photo the plans, drop by the shop over the weekend.


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