3D Design Contest Entry" AV bay Sled thingie..

Discussion in 'Contests' started by dr wogz, Feb 7, 2019.

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  1. Feb 7, 2019 #1

    dr wogz

    dr wogz

    dr wogz

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    This is my entry for the February (or later?) 3D Printer & Design contest.

    This is my avionics sled to fit into my Darkstar Jr. It's a tight fit! it's a 2.1" +tube! (So, the ID of the coupler is much smaller!) and only 8" long.

    I wanted to mount my Eggfinder Quantum and Mini GPS Tx, along with each their own battery. And, toss in a switch each..

    Version 1 was a compromise, a first look at what I can do. the intent was to make 2, and each are the same. They each have a battery compartment, and holes for mounting either the Mini or the Quantum.

    So, I started up Creo, and started with a 'D' circle extrusion. I then just cut away the bits I don't need

    it worked, but once I had it in place, and had a flight on it, I wasn't too happy with it. It's obvious, once you get it in your hands, and mounts 'stuff' to it, that some improvements can be made.


    Version 1, top, bottom top (other end)
    DS_SLED-1.jpg DS_SLED-2.jpg DS_SLED-3.jpg
     

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    Donnie likes this.
  2. Feb 7, 2019 #2

    dr wogz

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    So, I came up with version 2.

    version 2 is one piece. I've cut away much more material. I also added provisions for screw switches. And, I printed it in red, as that's the colour of filament we're using at the moment!

    The once piece design is less weight do to the "diet" I put it on! and more robust with a bunch of fillets added.. It's also easier to slide on & off eth rods..

    I had planned a flight on January, but the weather didn't cooperate. Hopefully February will be the flight for it!

    I didn't incorporate any standoffs, as I feel they just add a lot of complexity for printing; needing a massive amounts of supports. I had found a bag of small plastic beads that are perfect standoffs! they fit a 4-40 screw, and stand about 3/12 - 1/8" tall..

    ("As built & installed" pics comming soon..)


    Version 2, top, top, and bottom..
    DS_SLED-02-1.jpg DS_SLED-02-1.png DS_SLED-02-2.jpg
     

    Attached Files:

  3. Feb 7, 2019 #3

    cwbullet

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    I will give the a look tonight. I may even print them. I do not have a quantum but may have to order one.
     
  4. Feb 7, 2019 #4

    dr wogz

    dr wogz

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    I should toss in a disclaimer: I had the footprint for the Quantum. But not for the Mini. Its mounting is a little off (it has only two holes, diagonally.. so getting a proper measurement was difficult!)

    I ended up drilling a new hole for the 'upper' Mini mounting hole, so the Mini sits at about 7-10° off the axis.. (it also allows the mini antenna to be offset from the eyebolt that protrudes into the bay..) Photos (when I post them) will show this.

    All holes were tapped afterwards; once printed


    yes, Chuck, please do!
     
  5. Feb 7, 2019 #5

    dr wogz

    dr wogz

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    Some photos of version 1.. "As flown"


    20181027_134452.jpeg 20181027_134550.jpeg 20181027_134441.jpeg 20181027_134459.jpeg
     
    Last edited: Feb 7, 2019
  6. Feb 7, 2019 #6

    mpitfield

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    Very nice design. Hopefully I will have an entry to print and post in a week or so.
     
  7. Feb 7, 2019 #7

    cwbullet

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    Have you though about holes for other altimeters?
     
  8. Feb 7, 2019 #8

    dr wogz

    dr wogz

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    I've thought of holes for lots of things! but I only have the Eggfinders at the moment!

    If anyone asks, and provides a hole pattern, I can definitely add as needed!

    But do note: that adding holes may line up with a void.. I can more easily add to version 1 than to version 2..
     
  9. Feb 7, 2019 #9

    cwbullet

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    I may send your one tonight. I would like to see the Stratologger CF and or Missileworks RRC2+
     
  10. Feb 9, 2019 #10

    dr wogz

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    Some shots of version 2. I hope to fly it this weekend, weather permitting!

    20190208_201558.jpeg 20190208_201609.jpeg 20190208_201658.jpeg 20190208_201746.jpeg
     
  11. Feb 9, 2019 #11

    cwbullet

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  12. Feb 10, 2019 #12

    dr wogz

    dr wogz

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    I'll try on Monday at work!
     
  13. Feb 10, 2019 #13

    cwbullet

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    thanks.
     
  14. Feb 10, 2019 #14

    dr wogz

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    that's 2" x .7" ?
     
  15. Feb 10, 2019 #15

    cwbullet

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    RRC2+

    · Length 58mm (2.28")
    · Width 23.5mm (0.925")


    Perfectflite SLCF
    2.0"L x 0.84"W x 0.5"H
     
  16. Feb 22, 2019 #16

    dr wogz

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    OK, perforated it to fit:
    • Quantum
    • Eggfinder Mini
    • Raven3
    • StratologgerCF
    • RRC2
    The hole patterns are mirrored so you can put one of each either top or bottom.. Tap the holes you need! (sized for #4-40)

    Chuck, please try & report back! :D

    (your printer will definitely 'sing' [make music!] with all the holes!)

    DS_SLED-03.jpg
     

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    Last edited: Feb 22, 2019
  17. Feb 22, 2019 #17

    dr wogz

    dr wogz

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    Oh, and it (Version 2, as pictured) flew on Feb 17th.. :D
     
  18. Mar 13, 2019 #18

    Wallace

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    Love the design but I'd suggest smaller hardware. #6 allthread would be your friend. Open up some space and lose some weight at the same time.
     
  19. Mar 13, 2019 #19

    dr wogz

    dr wogz

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    I had originally thought of #10 all thread.. but it was already drilled & such for the 1/4-20 rod..
     
  20. Mar 13, 2019 #20

    Wallace

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    Gotcha. Maybe go aluminum for weight savings? I have some from MAC but I've never found it in a store..
     
  21. Mar 13, 2019 #21

    cwbullet

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    Keep this one in your designs. The next 3D printing contest will be an AV bay / sled.
     
  22. Mar 13, 2019 #22

    mpitfield

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    That is a contest I will get into as I have an experimental 3" rocket that needs an AV Bay.
     
  23. Mar 13, 2019 #23

    captbk

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    Very nice. I would buy one.
     
  24. Mar 13, 2019 #24

    cwbullet

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    I am getting prizes together. I have 3 right now.
     
  25. Mar 14, 2019 at 1:32 AM #25

    Wallace

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    Wouldn't mind having one myself..
     

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