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Thread: Centrifuge tubes for ejection charges

  1. #1
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    Centrifuge tubes for ejection charges

    These are the plastic centrifuge tubes commonly used for ejection charges (similar to Newton's 3rd offering). Drill a small hole in the bottom and feed your e-match through. Plug hole with hot glue or tape and fill with black powder/packing. Snap on cap and put a small piece of tape on top and you are ready to go. These tubes hold ~1.5g of black powder. I'm going to limit the minimum request on these to a dozen as this seems like it would fit reasonably into a padded envelope and be able to be mailed easily by First Class Mail. This may cost $2 to $3 depending on the weight and cost of the envelopes. As you can see I have a lot of these. I'd estimate well over 300. If you want more than a dozen you would probably save on shipping. I'd guess I could get nearly three dozen into a small Priority Mail box for instance.

    RULES: PM me if you are interested and how many you would want. I will update the thread as pieces are taken. Wait until I get back to you on shipping costs and fees before you Paypal me. I don't want to get into the situation with the last FREE offer where I had to refund payments that were made either incorrect amounts or after it was posted sold. This is because Paypal now seems to charge a fee for refunds so I lost money on that last posting--this is OK, it was a learning experience, but I'd rather not make a habit of it as these items are being given away already.

    Click image for larger version. 

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    Last edited by dixontj93060; 2nd August 2012 at 02:31 AM.
    L3, TRA #11847
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    ___________________________________

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  2. #2
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    PM sent.
    NAR 92675 L-2 Superstition Spacemodeling Society
    I may be getting older, but I refuse to grow up.

  3. #3
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    Can you save a dozen till tomorrow? I am not accessible to payment right now.
    Matt Tripoli Junior Member# 14257

    2013 motors:
    AT 38-360 H178DM (283ns)
    CTI Pro-29 3 Grain 138G106-14A (138ns)
    CTI Pro-29 1 Grain 55F29-12A (55ns)
    Estes C6-5 (9ns)
    Estes B4-2 (4ns)
    Total Newton Seconds for 2013: 489ns
    2.4% of N5800
    Largest Motor flown: Aerotech H178DM (38-360)

  4. #4
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    Quote Originally Posted by blackbrandt View Post
    Can you save a dozen till tomorrow? I am not accessible to payment right now.
    READ THE RULES.
    L3, TRA #11847
    Tripoli Indiana #132
    Tripoli Central Illinois #59
    Central Illinois Aerospace (NAR) #527
    Chicago Rocket Mafia, "Big Bucks" Dixon
    ___________________________________

    Gravity always wins. -- Radiohead

  5. #5
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    Estimating that half have been spoken for in the first hour... Again, I am estimating 300 but I may be wrong. I will just keep taking requests and fulfilling those in order. Any that have sent in a proper PM with quantity request are good at this point. I won't be responding until I get them boxed and weighed sometime tomorrow afternoon.
    L3, TRA #11847
    Tripoli Indiana #132
    Tripoli Central Illinois #59
    Central Illinois Aerospace (NAR) #527
    Chicago Rocket Mafia, "Big Bucks" Dixon
    ___________________________________

    Gravity always wins. -- Radiohead

  6. #6
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    Spoke too soon. All gone now with one "all that is left request." I will be getting back to all with their shipping costs.
    L3, TRA #11847
    Tripoli Indiana #132
    Tripoli Central Illinois #59
    Central Illinois Aerospace (NAR) #527
    Chicago Rocket Mafia, "Big Bucks" Dixon
    ___________________________________

    Gravity always wins. -- Radiohead

  7. #7
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    Great deals to be had. I am glad this has taken off. How many people responded but did not get some?
    -----------------------
    Chuck Haislip
    NAR/Tripoli Level 3

    Level 1 - LOC Minie Magg; Level 2 - PR Broken Arrow;
    Level 3 - 10 inch Nike Smoke
    Ns for Year: 0 on hiatus serving our GREAT country in Kuwait
    My rockets usually fly naked. If they survive, they earn their paint.

    Come fly with ROSCO or ICBM in Orangeburg SC => http://rocketrysouthcarolina.com

  8. #8
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    Postage costs sent to all purchasers. Packaging/mailing costs less than I expected. Now awaiting payment.
    L3, TRA #11847
    Tripoli Indiana #132
    Tripoli Central Illinois #59
    Central Illinois Aerospace (NAR) #527
    Chicago Rocket Mafia, "Big Bucks" Dixon
    ___________________________________

    Gravity always wins. -- Radiohead

  9. #9
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    You might find this suggestion works just as well as centrifuge tubes. Go to a florist and see if they will sell you some water tubes, without the water, ( or whichever way is the cheapest). I can normally get 10 - 20 for a dollar.
    Just remember, if the women don't find you handsome at least they will find you handy.
    Duck tape is also my best friend.
    BAR,started '67.
    L2 - TRA 12630
    Old NAR - 12554
    KD0OVY

  10. #10
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    Good suggestion although not all florists are open to drawing down their inventory, and although it may have changed, when I was testing these water tubes for use, I decided to pass as they were made of a more brittle plastic that tended to shatter in small pieces during use. Note though that respondents to this post are getting their tubes for less than this price, some far less, on a per tube basis.

    Quote Originally Posted by BEAR View Post
    You might find this suggestion works just as well as centrifuge tubes. Go to a florist and see if they will sell you some water tubes, without the water, ( or whichever way is the cheapest). I can normally get 10 - 20 for a dollar.
    Last edited by dixontj93060; 2nd August 2012 at 03:17 PM.
    L3, TRA #11847
    Tripoli Indiana #132
    Tripoli Central Illinois #59
    Central Illinois Aerospace (NAR) #527
    Chicago Rocket Mafia, "Big Bucks" Dixon
    ___________________________________

    Gravity always wins. -- Radiohead

  11. #11
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    All items shipped out this morning. Respondents should be receiving packages in 3 to 5 business days.
    L3, TRA #11847
    Tripoli Indiana #132
    Tripoli Central Illinois #59
    Central Illinois Aerospace (NAR) #527
    Chicago Rocket Mafia, "Big Bucks" Dixon
    ___________________________________

    Gravity always wins. -- Radiohead

  12. #12
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    Many thanks!
    John Howard
    NAR #88904 L2
    TRA #13859 L2
    ROC Member http://rocstock.org/

  13. #13
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    Thanks Tim, now I really need to get that homemade dual deploy altimeter finished.....
    NAR 92675 L-2 Superstition Spacemodeling Society
    I may be getting older, but I refuse to grow up.

  14. #14
    Join Date
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    Recieved
    Matt Tripoli Junior Member# 14257

    2013 motors:
    AT 38-360 H178DM (283ns)
    CTI Pro-29 3 Grain 138G106-14A (138ns)
    CTI Pro-29 1 Grain 55F29-12A (55ns)
    Estes C6-5 (9ns)
    Estes B4-2 (4ns)
    Total Newton Seconds for 2013: 489ns
    2.4% of N5800
    Largest Motor flown: Aerotech H178DM (38-360)

  15. #15
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    Received. Thanks Mr. Dixon!
    -- Jason

    NAR 93283 L1 KB1YOD
    The opposite of success is not failure but apathy.

  16. #16
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    Got mine yesterday, thanks!
    NAR 92675 L-2 Superstition Spacemodeling Society
    I may be getting older, but I refuse to grow up.

  17. #17
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    grammer boy brandt

    check your spelling!

    These are the very same tube you posted about not knowing what to do with them. Slow down mr gramer boy excitement.

  18. #18
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    uh...........GuitarRockets..............it's "grammar".

    s6

  19. #19
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    Quote Originally Posted by stealth6 View Post
    uh...........GuitarRockets..............it's "grammar".

    s6
    I hate when that happens!

  20. #20
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    Quote Originally Posted by GuitarRockets View Post
    I hate when that happens!
    yup. I like your signature.
    -----------------------
    Chuck Haislip
    NAR/Tripoli Level 3

    Level 1 - LOC Minie Magg; Level 2 - PR Broken Arrow;
    Level 3 - 10 inch Nike Smoke
    Ns for Year: 0 on hiatus serving our GREAT country in Kuwait
    My rockets usually fly naked. If they survive, they earn their paint.

    Come fly with ROSCO or ICBM in Orangeburg SC => http://rocketrysouthcarolina.com

  21. #21
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    Thank you sir!

  22. #22
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    I got my stuff in the mail the other day. Thanks a whole lot.

    Kevin
    NAR 91582 TRA 13980 L2

    Give OpenRocket Android application a try.

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