Estes Mars Lander Build

Discussion in 'Low Power Rocketry (LPR)' started by SecondRow, Jun 7, 2019.

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  1. Sep 20, 2019 #31

    SecondRow

    SecondRow

    SecondRow

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    Thanks. I didn’t realize that. I wanted it to look as nice as possible since the kit is nearly 50 years old. Maybe I’ll skip the primer coat to keep it light. It’s mostly embossed paper wraps that probably don’t need it anyway.

    Alternatively, this might be a good candidate for a Qjet C12.
     
  2. Sep 20, 2019 #32

    SecondRow

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    0EB90FB4-2017-4944-8552-0F4FA14D7E27.jpeg Fixed the nozzle.
     
  3. Sep 20, 2019 #33

    neil_w

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    That's probably a good thought. I'd imagine the D16 as well, for the same reasons.
     
  4. Sep 20, 2019 #34

    Joekeyo

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    Very nice build. Your craftsmanship shows. My experience with rubber bands and the like is that they just don't last over about 10 years, even when kept in the dark with air conditioning. May be different for contest rubber.
     
  5. Sep 20, 2019 #35

    cerving

    cerving

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    I had one of the original ones, circa 1970 or so. No springs, it used elastic, I seem to recall that they had you cut a few pieces from the shock cord. Lost it in a tree at college... I just got around to getting a Semroc replacement for it.
     
  6. Oct 7, 2019 #36

    SecondRow

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    Going in for paint. 015A9AA5-CF6E-4FC0-AF5C-3664BA7EEAB9.jpeg
     
  7. Oct 7, 2019 #37

    SecondRow

    SecondRow

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    Finished painting. Only the decals are left.
    9EDBBB31-5E02-442D-A357-165837CB30B4.jpeg
     
  8. Oct 7, 2019 #38

    OKTurbo

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    Looking great! Here’s a pic of my survivor. Built as a kid in ‘77 or ‘78. This is the one that mom saved when I went off to college. The others were sold at garage sales...I got the ‘profits’. Wish I had saved more, but I had totally lost interest in rockets at the time.
    134F3AB6-B066-4E7C-ABDA-0F24BD106DD0.jpeg
     
  9. Oct 8, 2019 #39

    SecondRow

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    The rocket weighs in at 125 grams, almost 4.5 ounces. Significantly more than the 3 ounces listed on the box. That’s most likely due to the metal springs and my tendency to be heavy with the paint. The first flight will be on a C12, as this rocket will be pushing the limits of a C6.
     
  10. Oct 9, 2019 #40

    SecondRow

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    So I taped the decals to the window as @mach7 suggested many moons ago, but unfortunately the yellowing didn’t come out. I think it’s because the yellowing was probably caused by water stains rather than normal yellowing of old decals. Also, one of the Martin Marietta decals ripped at some point (before I got around to applying liquid decal film). So, I ordered some new decals, but I want to try using as much of the old ones as I can.
    E3958AB1-583F-47F5-A9F2-90091BD7495A.jpeg

    I first got the Semroc decals, but they are not exactly the same. I knew that some were different, but I was hoping the Martin Marietta ones would be the same. Unfortunately, they’re not. If you can’t read it, it says Semroc Astronautics.
    8B5CA134-CC04-4C0D-A950-121A7F6168D3.jpeg
    So, I have a set of the Tango Papa decals on the way. I already confirmed the blue decals say Martin Marietta.

    In the meantime, I’m trying to apply as many of the old decals as possible. And it’s turning out more difficult than I thought it would be. The decals do not want to release from the paper. I’ve managed to get the 4 black two-dot decals in place because they are very small and were able to release with some coaxing. image.jpg

    When I tried a bigger decal, I ended up tearing it even though it was in water for over two minutes (with me checking it every so often). I’m going to try one of the stained decals next to see how long it will take to release from the paper. If anyone has any suggestions on how to get the decals to release more easily, I’m all ears. If I can’t get them to release, I’ll use Tango Papa’s. But as I’ve said before, I’d really like to build this kit with as many of the original parts as possible.
     
  11. Oct 9, 2019 #41

    mach7

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    Very sorry to hear about your decals. The window trick usually works.

    Good thinking about Tango Pappa! I had forgotten about them.
     

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