Model Minutes XLFR-7 (Tintin's moon rocket)

Discussion in 'Cardstock Rocketry' started by kuririn, May 16, 2019.

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  1. May 16, 2019 #1

    kuririn

    kuririn

    kuririn

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    Not a build thread, but I was inspired by Lakeroadster's build, so I pulled this out of my pile. Foamboard fins, cardstock body. Got this from a veteran modeler a few months ago.
    0515191246.jpg
    Fin pods:
    0515191253.jpg
    Fins and skins:
    0515191254.jpg
    Fuselage segments:
    0515191252.jpg
    I was aware that instructions could be sketchy and there might be fitment issues. Sure enough, the 24mm tube turned out to be more like 27mm. I really hate it when you do the assembly correctly according to the instructions but the part doesn't fit. Replaced it with a BT-50 tube.
    0515191237.jpg
    I chose the 24mm motor mount option. Replaced the copper wire engine retainer with a standard engine hook. But just as a build exercise, I constructed the 18mm motor mount:
    0515191258.jpg
    Copper wire over the end of the motor, retained with thread and glue. Cardstock motor tube and cardstock strips glued into centering rings.
    0515191254a.jpg
    Finally, formed the nose cone and added the clay weight. Then rolled the launch lug.
    Wrapping things up tomorrow. Cheers.
     
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  2. May 17, 2019 at 6:26 AM #2

    kuririn

    kuririn

    kuririn

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    I must be on a foamboard kick, built this a couple of days ago:
    0514190640.jpg
    M2F2 Space Camel. Fun build, terrible glider, or so I hear from some people at YORF. We'll see.

    Finishing this build:
    Glued and filleted the fins.
    Finished gluing the fuselage segments.
    Glued and filleted the fin pods, glued the launch lug.
    Glued foam shock absorbers on the bottom of the fin pods.
    Assembled recovery gear.
    Just need to do some touch up paint and brush work where the ultrafine Sharpie can't reach, and clear coat.
    Done!
    IMG_20141231_234511.jpg
    She goes up at the next launch. Cheers.
     
  3. May 17, 2019 at 9:16 PM #3

    aerostadt

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    Is there some reinforcement for all that paper? Can it really hold together on a launch with a 24 mm motor? Let us know how it works?
     
  4. May 17, 2019 at 9:45 PM #4

    kuririn

    kuririn

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    I had my doubts about paper rockets in general, until I built and flew the Fliskits Midnight Express. That has been through a couple of flights with no damage.
    This one is a core BT-50 tube with foamboard TTW fins attached. The rest is window dressing.
    Recommended engines are C5 and C6 (18mm) and D12 (24mm). I think I'll maiden her with a C11-3.

    Or maybe I'll put this in:
    IMG_20141231_140109.jpg

    NAH! Laters.;)
     
  5. May 18, 2019 at 7:15 AM #5

    GlenP

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    You didn't happen to scan that Tin Tin rocket template before you built it, did you?
     
  6. May 18, 2019 at 7:27 AM #6

    kuririn

    kuririn

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    Dang, I keep forgetting. I kept the fin template though, if you want it.
     
  7. May 18, 2019 at 11:22 PM #7

    BABAR

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    Nice.

    You may find this review helpful. Mentions some problems with the stock launch lug
     
  8. May 19, 2019 at 1:02 AM #8

    kuririn

    kuririn

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    Babar, your link is missing but I assume you're referring to Chan Stevens' review at EMRR? It appears that Chan used the plastic straw for the launch lug. The instructions, however say to use the straw to roll a cardstock lug from the pattern sheet. This is then glued to the center fuselage segment ( widest, straightest part).
    Also the problems on Chan's second flight seem to be from a crimped cardstock tube. I replaced mine with a standard BT-50 due to fitment problems, so it should be stronger than stock. Fingers crossed.
     
  9. May 19, 2019 at 1:38 AM #9

    neil_w

    neil_w

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    Hey, is there a paint shortage in your area or something? :D:D:D

    kuririn.jpg
     
  10. May 19, 2019 at 2:06 AM #10

    kuririn

    kuririn

    kuririn

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    Ha! Why do you think I'm building pre printed cardstock models now?
    Here's some further along in the queue:
    IMG_20141231_140254.jpg IMG_20141231_140620.jpg

    BTW, not a good picture, but you may be interested in this:
    IMG_20141231_140813.jpg
    13, 18, and 24mm Deuces Wild. So, let's see, need to buy one case of primer.....
     
    Last edited: May 19, 2019 at 2:19 AM
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  11. May 19, 2019 at 4:40 PM #11

    BABAR

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