Have any of you tried the screw-together couplers?

Discussion in 'Low Power Rocketry (LPR)' started by LW Bercini, Aug 15, 2019 at 2:24 PM.

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  1. Aug 15, 2019 at 2:24 PM #1

    LW Bercini

    LW Bercini

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    erockets sells a 2-part coupler that screws together. I just picked up the new USS Andromeda kit, and am thinking these couplers would be ideal. Transporting long skinny rockets is a pill.

    [​IMG]
     
  2. Aug 15, 2019 at 2:44 PM #2

    Scott Hala

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    I use one on my Mean Machine to switch between 24mm and 29mm motors.
     
  3. Aug 15, 2019 at 4:14 PM #3

    shreadvector

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    What kind of pill? Like this? [​IMG];):D
     
  4. Aug 15, 2019 at 4:59 PM #4

    kuririn

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    I picked up a few in the BT-60 size a few weeks ago. For the Andromeda you'll need a ST9/BT50 size which I don't see listed.
    They even have a Kevlar anchoring slot for your shock cord. They haven't flown yet, but I don't foresee any problems.
    Some close-ups for your edification:
    0815190548.jpg 0815190549.jpg
    Laters.
    EDIT: OK, I see that they have at BT-50 size in the "New" section but it's not listed in the Coupler section yet. ID for the BT-50 tube is the same as the ST9 tube: .950". ST9 tube is thicker, so OD is slightly larger.
     
    Last edited: Aug 15, 2019 at 7:59 PM
  5. Aug 15, 2019 at 6:44 PM #5

    kitbasher99

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    Because of the size difference between the ST7/BT20 and the ST9/BT50 tubes, we recommend that you use epoxy for your adhesive. Other than that they should be fine. The shock cord mounts the same on the USS Andromeda.
     
  6. Aug 15, 2019 at 8:19 PM #6

    matthewdlaudato

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  7. Aug 15, 2019 at 8:29 PM #7

    Zeus-cat

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    The guys at eRockets worked pretty hard on getting these just right. They work very well.
     
  8. Aug 15, 2019 at 8:36 PM #8

    neil_w

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    It says they’re PLA printed. I’d be careful with them in hot launch environments.
     
  9. Aug 15, 2019 at 9:21 PM #9

    matthewdlaudato

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    They look great, I don’t doubt they work well, only that they appear to be a straightforward design.
     
  10. Aug 16, 2019 at 1:34 AM #10

    BBowmaster

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    I need to snag a couple. I was gifted an old beat-up semi-flyable Mean Machine and I’ve been considering how to break it down for transport once it’s fixed up.
     
  11. Aug 16, 2019 at 2:35 AM #11

    cwbullet

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    I like the idea. This could be a great contest.
     
  12. Aug 16, 2019 at 8:24 PM #12

    sjh1

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    I love this idea. I was also thinking that is could be used on a fin can to use multiple motor sizes!
     

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