What did you do rocket wise today?

Discussion in 'The Watering Hole' started by BeerorKid, Jan 31, 2013.

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  1. Apr 22, 2019 #21421

    rharshberger

    rharshberger

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    Spraying the base color first (in this case white, seals the edges of the tape and greatly reduces or eliminates seeping.
     
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  2. Apr 22, 2019 #21422

    Flyfalcons

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    That is correct, yes. I have not done this before, but understand it helps seal off the tape lines to prevent bleeding of the second color.
     
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  3. Apr 22, 2019 #21423

    neil_w

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    This is where I chime in and say that Micromeister used to advocate instead for a coat of clear to seal off the tape lines before adding the second color, since the clear coat lays down thinner than paint and therefore creates less of a paint dam.

    Disclaimer: I cannot vouch for either method.
     
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  4. Apr 22, 2019 #21424

    cwbullet

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    I will try. at this stage, I just want something to protect them from being broken (one broke during transit last month.
     
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  5. Apr 22, 2019 #21425

    jqavins

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    Nice setup. How do you assure the tube is perfectly aligned to the table? And can you deliberately misalign it by a controlled amount? That would allow you to cut canted slots.

    It doesn't actually eliminate seeping, it just means that whatever seeps is the base color (or clear) so it doesn't matter. Really, it's one of those so-simple-it's-genius things. I hadn't heard the clear coat version before. It could simplify the sequence where more than two colors meet at a corner.
     
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  6. Apr 22, 2019 #21426

    Bruiser

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    I've been working on my Defender build that I have a thread on over in the scratch built forum but I distracted by a possible UPSCALE project.

    I saw these last week and can't get them out of my mind. With the right fins the one in front could be an Estes Big Daddy upscale. Just add some fins and some centering rings for the "E" motors. I could make them. :) How many "E" motors do you think it would take for a launch? 24? 36? Hey, I wonder how many have ever been clustered together successfully???

    Upscale.jpg

    -Bob
     
  7. Apr 22, 2019 #21427

    astrowolf67

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    I started my first build in quite a few years today. I'm building a couple of Estes Star Orbiters, one at a time. First is going to be basically stock, other than papered fins, kevlar shock cord mount, and mid separation, rather than nose. It will be flown with a JLCR. I'm thinking of building the second as a dual deploy, using a Quark altimeter I've assembled. I currently have the first set of fins wood glued and papered, drying under a flat board and 40 lbs of telescope counterweights.
     
  8. Apr 22, 2019 #21428

    BayouRat

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    I started two new builds.

    [​IMG]

    [​IMG]
     
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  9. Apr 22, 2019 #21429

    jqavins

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    OK, I'll bite. Where did you find those, and what were they originally (or were they made as nose cones)?
     
  10. Apr 22, 2019 #21430

    Bruiser

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    They are at a scrap metal place that I drive by everyday. They are definitely wing tanks most likely from an Air Force plane as we are at Holloman Air Force base. I'm surprised to see them there and wonder how they got them...

    -Bob
     
  11. Apr 22, 2019 #21431

    rharshberger

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    Lots of ways to get them, the government scraps a lot of metal every year and unless the tanks are classified objects they can be sent to scrappers and....unless the scrapper has been required to destroy them you can probably buy them at or around scrap price. We had a Cincinatti Milling machine go to the scrappers from a government lab, it was almost new but the scrapper was required to destroy it smrather than re-sell it.
     
  12. Apr 23, 2019 #21432

    Charles_McG

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    Added a drag knife to my 3D printer and cut my first vinyl decal.

    IMG_0967.jpg



    IMG_0969.jpg
     
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  13. Apr 23, 2019 #21433

    prfesser

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    With flash-in-the-pan ignition, almost any number of BP motors can be lit. At one LDRS someone did 100+ motors.

    Composites---different story.

    Best -- Terry
    PS: for those who've never heard of it, FITP ignition involves a pan of some sort directly below the motor nozzles. A thin layer of BP is added to the pan, ignited with a single motor starter.
     
  14. Apr 23, 2019 #21434

    jeffjblack

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    Stitched a couple of panoramas from recent 4k video on my rocket during the Southern Arizona Rocketry Association Volunteers Launch, March 23rd 2019. If you zoom and pan you will get a walk down memory lane of the time you had to chase something at the club site.

    https://flic.kr/p/2fCHLQi

    https://flic.kr/p/2fy4jyG

    I am using Image Composite Editor From the Microsoft Computational Photography Applications site. It is free. And it works!
    #Microsoft #ImageCompositeEditor

    http://bit.ly/icemicrosoft
     
  15. Apr 23, 2019 #21435

    Curtis Enlow

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    Joined the Washington Aerospace Club (NAR) today.

    Guess I'm committed now! :)
     
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  16. Apr 23, 2019 #21436

    tOD

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    Ordered a Mach1 BT60 Black Hole 29mm motor mount and SMT e-bay kit.
     
  17. Apr 23, 2019 #21437

    Flyfalcons

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    Will we see you at FITS?
     
  18. Apr 23, 2019 #21438

    jqavins

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    Joseph Avins

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    The other day, finished painting a "disposable" club loaner rocket. This came from a club build session focused on repairing and rebuilding damaged loaners; no time there for painting so I took it home. Yesterday I noticed is had no launch lug. Not my build, I only took it to paint. So I stole a lug from a few kits down from the top of my build pile, sanded the paint a little, and glued it on. This morning before work shot it with paint.
     
  19. Apr 23, 2019 #21439

    neil_w

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    That is very cool, I didn't realize you could repurpose a 3D printer to act as a cutter.
     
  20. Apr 23, 2019 #21440

    rharshberger

    rharshberger

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    You can do the same with CNC routers.
     
  21. Apr 23, 2019 #21441

    jqavins

    jqavins

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    One might even be able to repurpose a 3D printer as a laser cutter, but that's a much bigger conversion project. The bottom line is that the XYZ positioner (3D printer) can potentially be repurposed to do a variety of XY jobs. Anyone remember pen plotters?
     
  22. Apr 23, 2019 #21442

    Lucifer

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    Experimented with some transitions and their different shapes and how they affect rocket performance. Curves also affect the weight & stability, long-sweep fins can give you more speed and acceleration but at the cost of a heavier rocket: smaller payload. Found a way to break 30,000 on a single stage. I think I can do better.
     
  23. Apr 23, 2019 #21443

    Videolester

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    Sat V (1969 kit) is shaping up nicely! Sat V build #1.JPG
     
  24. Apr 23, 2019 #21444

    Curtis Enlow

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    I hope so, Ryan! Finishing the fin fillets now, and starting the e-bay coupler. I would like to get in one LOC IV Mod 0 Mid-Power maiden at 60 Acres before trying the IV Mod A stretched at FITS, but - depending on upcoming gigs - I might have to shoot for one of the Tri-City fly-in's.
     
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  25. Apr 23, 2019 #21445

    ouisconsin rocket

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    Today I completed my level 1 cert bird, including the field adjustment to the CTI 38mm 2 grain motor assembly.
    Hopefully a mid May launch, wx permitting.
    :p
     
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  26. Apr 23, 2019 #21446

    jqavins

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    Joseph Avins

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    Good luck! (Or is that supposed to be "Break a fin"?)
     
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  27. Apr 23, 2019 #21447

    BayouRat

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    I received a long box from the UPS man. Guess what’s in there?

    [​IMG]
     
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  28. Apr 24, 2019 #21448

    jFlds

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    Finished up the airframe work on the Mad Dog XL Madcow kit, I'll start working on the electronics and recovery systems next week. Looks like she will be hot on a nice K C Star load!
     

    Attached Files:

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  29. Apr 24, 2019 #21449

    ouisconsin rocket

    ouisconsin rocket

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    Is the rocket supposed to have fins too? Damn this is getting complicated.
     
  30. Apr 24, 2019 #21450

    Matt_The_RocketMan

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    Bought $200 of engines all types E's B's D's and A's , bought several E classed rockets also including Big Bertha , Conquest , and Ascender

    [​IMG]
    upload_2019-4-23_18-54-33.jpeg \
    upload_2019-4-23_18-54-51.jpeg
     
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