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  1. #1
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    AT ejection charges?

    I just noticed some assembly drawings of AT HP reloads say the ejection charge is "user supplied", while others list the weight of the BP. I thought all their reloads came with ejection charges. Is something changing? These are both 38/720 reloads.

    http://www.aerotech-rocketry.com/cus...50w-l_assy.pdf

    http://www.aerotech-rocketry.com/cus...00r-m_assy.pdf

    NAR 91107, Level 2

    I really, really hate bugs.

  2. #2
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    That's very interesting. I've never gotten a AT reload that didn't have the BP in it for an ejection charge. I noticed on my I1299N-P reload, there was a canister of powder included. I thought that was strange in a Plugged reload, but I'll take it.

    Handeman

    TRA #09903 L3 3/29/2015

    "If you don't use your head, you have to use your feet!" my Dad

    Tripoli Central Virginia #25 - BattlePark.org

  3. #3
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    I don't remember any of the AT reloads I've used not coming with the BP, either. From E all the way to J, they've all included it.
    NAR 91107, Level 2

    I really, really hate bugs.

  4. #4
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    Quote Originally Posted by qquake2k View Post
    I just noticed some assembly drawings of AT HP reloads say the ejection charge is "user supplied", while others list the weight of the BP. I thought all their reloads came with ejection charges. Is something changing? These are both 38/720 reloads.

    http://www.aerotech-rocketry.com/cus...50w-l_assy.pdf

    http://www.aerotech-rocketry.com/cus...00r-m_assy.pdf
    Look at the instructions instead of the drawings. For the I600 BP is listed as included:
    http://www.aerotech-rocketry.com/cus...in_20066-1.pdf
    Steve Shannon
    L3CC, TAP,
    President, Tripoli Rocketry Association

  5. #5
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    Quote Originally Posted by Steve Shannon View Post
    Look at the instructions instead of the drawings. For the I600 BP is listed as included:
    http://www.aerotech-rocketry.com/cus...in_20066-1.pdf
    I have a habit of referring to the drawings when assembling motors. I guess I should read the instructions too.
    NAR 91107, Level 2

    I really, really hate bugs.

  6. #6
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    Quote Originally Posted by qquake2k View Post
    I have a habit of referring to the drawings when assembling motors. I guess I should read the instructions too.
    After 14 years of building AT motors, I tend to not look at either.
    Handeman

    TRA #09903 L3 3/29/2015

    "If you don't use your head, you have to use your feet!" my Dad

    Tripoli Central Virginia #25 - BattlePark.org

  7. #7
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    It's only been 6 or 7 years for me.
    NAR 91107, Level 2

    I really, really hate bugs.

  8. #8
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    Quote Originally Posted by qquake2k View Post
    It's only been 6 or 7 years for me.
    newbie!!!
    Handeman

    TRA #09903 L3 3/29/2015

    "If you don't use your head, you have to use your feet!" my Dad

    Tripoli Central Virginia #25 - BattlePark.org

  9. #9
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    After 17 years I still tape the directions to my table and build the motor on top. Two years ago I got cocky and slapped a motor together and somehow swapped fore and aft o-rings and ended up burning a nice slot in my case and rocket. I admire those of you who can remember which motors have which combination of o-rings and where they go.



    Steve Shannon
    Steve Shannon
    L3CC, TAP,
    President, Tripoli Rocketry Association

  10. #10
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    Quote Originally Posted by Handeman View Post
    newbie!!!
    I'm just a baby!
    NAR 91107, Level 2

    I really, really hate bugs.

  11. #11
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    Quote Originally Posted by Steve Shannon View Post
    After 17 years I still tape the directions to my table and build the motor on top. Two years ago I got cocky and slapped a motor together and somehow swapped fore and aft o-rings and ended up burning a nice slot in my case and rocket. I admire those of you who can remember which motors have which combination of o-rings and where they go.

    Steve Shannon
    One time I forgot to put the liner in. I don't recommend that. I also forgot to tighten a quick link and broke a fin on the same launch. On the next launch of that same rocket (after I repaired it), I forgot an o-ring when assembling the motor. The delay grain burned through prematurely, and gave me a sudden and surprising early deployment. No damage that time. I finally got an uneventful third launch with that rocket.


    http://www.youtube.com/watch?v=j5MHkfOs-mk
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    NAR 91107, Level 2

    I really, really hate bugs.

  12. #12
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    It sucks when that happens, doesnít it? We need a t-shirt.


    Steve Shannon
    Steve Shannon
    L3CC, TAP,
    President, Tripoli Rocketry Association

  13. #13
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    Quote Originally Posted by Steve Shannon View Post
    It sucks when that happens, doesn’t it? We need a t-shirt.


    Steve Shannon
    That is a great idea.
    -----------------------
    Chuck Haislip
    NAR/Tripoli Level 3
    Formerly a Prefect of ICBM - TRA #60

    Level 1 - LOC Minie Magg; Level 2 - PR Broken Arrow;
    Level 3 - 10 inch Nike Smoke
    2015 Ns for Year: 1315 Newtons
    My rockets usually fly naked. If they survive, they earn their paint.

    Come fly with ROSCo or ICBM in Camden SC => http://rocketrysouthcarolina.org

  14. #14
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    What would the shirt say? "Rocket Idiot"?
    NAR 91107, Level 2

    I really, really hate bugs.

  15. #15
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    Quote Originally Posted by qquake2k View Post
    What would the shirt say? "Rocket Idiot"?
    Iíve already got that trademarkedÖ


    Steve Shannon
    Steve Shannon
    L3CC, TAP,
    President, Tripoli Rocketry Association

  16. #16
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    Quote Originally Posted by Steve Shannon View Post
    I’ve already got that trademarked…

    Steve Shannon
    I'd pay the royalties. LOL
    NAR 91107, Level 2

    I really, really hate bugs.

  17. #17
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    Unlike LEGOs, rocket motors do not come with extra parts.
    -----------------------
    Chuck Haislip
    NAR/Tripoli Level 3
    Formerly a Prefect of ICBM - TRA #60

    Level 1 - LOC Minie Magg; Level 2 - PR Broken Arrow;
    Level 3 - 10 inch Nike Smoke
    2015 Ns for Year: 1315 Newtons
    My rockets usually fly naked. If they survive, they earn their paint.

    Come fly with ROSCo or ICBM in Camden SC => http://rocketrysouthcarolina.org

  18. #18
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    But they do come with instructions. You just have to read them.
    NAR 91107, Level 2

    I really, really hate bugs.

  19. #19
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    Quote Originally Posted by qquake2k View Post
    But they do come with instructions. You just have to read them.
    We don’t need no stinking instructions.
    -----------------------
    Chuck Haislip
    NAR/Tripoli Level 3
    Formerly a Prefect of ICBM - TRA #60

    Level 1 - LOC Minie Magg; Level 2 - PR Broken Arrow;
    Level 3 - 10 inch Nike Smoke
    2015 Ns for Year: 1315 Newtons
    My rockets usually fly naked. If they survive, they earn their paint.

    Come fly with ROSCo or ICBM in Camden SC => http://rocketrysouthcarolina.org

  20. #20
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    Iím loving the creativity.



    Steve Shannon
    Steve Shannon
    L3CC, TAP,
    President, Tripoli Rocketry Association

  21. #21
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    Quote Originally Posted by qquake2k View Post
    But they do come with instructions. You just have to read them.
    Well, not any more. All you get in the reload is the drawing and some words that are full of errors. These are not like the "instructions" of old. If didn't have 20 years of experience of assembling RMS motors, I would be very confused with the crappy documentation that Aerotech provides.

  22. #22
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    I saw someone with a great T-shirt from some event awhile ago. It said:

    No, two shovels DO NOT count as redundant recovery systems!
    NAR #104043, Jr L1 - 3/18/18
    www.crmrc.org

    Director of Impressive Titles, ArdIU Flight Computer Project:
    lithosphererocketry at gmail dot com

  23. #23
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    Quote Originally Posted by Buckeye View Post
    Well, not any more. All you get in the reload is the drawing and some words that are full of errors. These are not like the "instructions" of old. If didn't have 20 years of experience of assembling RMS motors, I would be very confused with the crappy documentation that Aerotech provides.
    As of the last launch I attended in April, the reloads I used had the same old instructions.
    NAR 91107, Level 2

    I really, really hate bugs.

  24. #24
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    Quote Originally Posted by LithosphereRocketry View Post

    No, two shovels DO NOT count as redundant recovery systems!
    That was Troj's L-3 mantra .....

    Jim Hendricksen
    L-3 Tripoli 9693
    [ICBM, Orangeburg,SC R.I.P.] - QCRS ,Princeton ILL - MDRA , Price Maryland - Woosh, Bong Wisconsin- ROCC, Charlotte NC , ICBM Camden SC
    "Made" member of Chicago & Carolina Rocket Mafia
    Rocketry...........an exact science.......but not exactly !!!

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