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Thread: CTI Motor Adapters on the way?

  1. #1
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    CTI Motor Adapters on the way?

    I understand that CTI may be introducing a new product(s), 29mm adapters or spacers that would allow for using a smaller grain reload than what the hardware is capable. Perhaps a 3G motor could support 1&2G reloads, etc.
    Kinda like the solution by others.

    No real detail that I know of, just an answer to an email question from CTI.

    Is this public knowledge?

    Wm.
    Last edited by ONAWHIM; 16th January 2010 at 01:28 PM. Reason: Forgot to add 29mm
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  2. #2
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    The 38mm versions have been available for several months. I don't remember offhand if there are also 29mm ones, but it shouldn't be too hard to find out.

    (does quick search)

    Yup, here we go:

    http://www.rocketryforum.com/showthr...hlight=spacers
    Last edited by sylvie369; 16th January 2010 at 01:48 PM.

  3. #3
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    Grain spacers

    As I understand it; you can stack 2 grain spacers in one case. That gives you the flexibility of flying from 3 different cases in one.

    JD

  4. #4
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    Yep, they do. I have the 38mm one.

    It makes it so you can fly twice as many reloads,while having half as many cases! and they are simple and easy to use.
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  5. #5
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    Quote Originally Posted by ONAWHIM View Post
    29mm spacers that would allow for using a smaller grain reload than what the hardware is capable. No real detail that I know of, just an answer to an email question from CTI.
    There will be an announcement regarding these products soon from the certification body (CAR/MCC).

    Jeroen

  6. #6
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    I'd like to order one of everything, please.

  7. #7
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    Quote Originally Posted by sylvie369 View Post
    I'd like to order one of everything, please.
    Eh? Our complete catalog? ;-) Your dealer will be happy.

    Jeroen

  8. #8
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    Pro29 spacers were certified and are now available (give the dealers a week or so, please): http://www.rocketryplanet.com/content/view/3159/29/.

    One spacer can be used for all motors, including the Pro29-6GXL. Up to two spacers can be used.

    Jeroen

  9. #9
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    Awesome news!

    And I am gonna have to get me one of those H159's and try it! FOr some reason I love green flames!
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  10. #10
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    Quote Originally Posted by Pantherjon View Post
    Awesome news!

    And I am gonna have to get me one of those H159's and try it! FOr some reason I love green flames!
    Hopefully the Green will turn up in some of the smaller Pro29 cases. Say the 3 or 4 grain size. Not to mention in Pro38 cases.

    Nice work!

    Al

  11. #11
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    Quote Originally Posted by als57 View Post
    Hopefully the Green will turn up in some of the smaller Pro29 cases. Say the 3 or 4 grain size. Not to mention in Pro38 cases.
    It will. We had to start somewhere. Since this cert session we made a lot of propellant. All ready to be certified.

    Jeroen

  12. #12
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    Pardon me for being a bit dense
    sometimes but does the 29mm spacer
    make 6XL casing work with regular 6 grain
    reloads ??
    Susan DeBerg
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  13. #13
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    I read somewhere that the 29mm 6XL case is a full grain longer
    hence: a regular spacer will work.
    In essence you have a 7 grain 29mm motor.

    http://www.rocketryplanet.com/forums...ead.php?t=4003

    JD


    Quote Originally Posted by roadkill View Post
    Pardon me for being a bit dense
    sometimes but does the 29mm spacer
    make 6XL casing work with regular 6 grain
    reloads ??
    Last edited by JDcluster; 21st January 2010 at 10:39 PM.

  14. #14
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    Quote Originally Posted by JDcluster View Post
    I read somewhere that the 29mm 6XL case is a full grain longer hence: a regular spacer will work. In essence you have a 7 grain 29mm motor.http://www.rocketryplanet.com/forums...ead.php?t=4003
    That is correct. The Pro29-6GXL is really a Pro29-7G casing. But just to keep it consistent we named it XL.

    I'm just wondering what to do with the next size up now. 6GXXL? 8G? ;-)

    Jeroen

  15. #15
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    I have never removed the grains from an XL case, are their truly 7 grains? or just 6 grains that are as long as 7 grains would be? just curious.
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  16. #16
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    Quote Originally Posted by stickershock23 View Post
    I have never removed the grains from an XL case, are their truly 7 grains? or just 6 grains that are as long as 7 grains would be? just curious.
    Depends on what motor you are talking about. Most of them are 6 grains.

    Jeroen

  17. #17
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    Quote Originally Posted by Jeroen_at_CTI View Post
    I'm just wondering what to do with the next size up now. 6GXXL? 8G? ;-)

    Jeroen
    I think "6GXXL" would be fine. Rocketeers are very used to sizes like "XXL" and "XXXL", as I'm sure you've noticed by looking at the T-shirt pile at a major launch.

  18. #18
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    Quote Originally Posted by sylvie369 View Post
    I think "6GXXL" would be fine. Rocketeers are very used to sizes like "XXL" and "XXXL", as I'm sure you've noticed by looking at the T-shirt pile at a major launch.
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  19. #19
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    Instead of 6GXXL go with 6GMagnum. Works for other products.

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  20. #20
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    I think 29mm Maximum would sound cool. But if you then do a 9 grain you'll have another problem.

    Don

  21. #21
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    They are on the way!!!

    Pro29 turns one, CTI announces special 2010 promotion


    http://www.rocketryplanet.com/content/view/3172/30/

    The Pro29 special 2010 promotion consists of a Pro29-3G motor casing plus an aft closure ring, two Pro29 case spacers to allow you to fly Pro29 1G and 2G reloads kits in your 3G casing, a ProDAT Delay Adjustment Tool and a ProDAT centering ring for use with the ProDAT in the 29mm line of motors.

    Using the supplied spacers, all eighteen Pro29-1G, 2G and 3G reload kits can be flown with this hardware package varying in total impulse from 41 Ns to 168 Ns, reflecting the equivalent of a Pro29/40-170 motor set.
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