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  1. #1
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    Delta II

    I have just completed my Delta II model. It is the same scale as my Delta IV kits.

    It will fly on a C6-x and upto 9 A10-PTs.

    Has anyone else flown a 1/74th--ish scale of the Delta II?


    Photo below: (L to R) My prototype DIV Heavy, the new DII-Phoenix and DIV Medium 5+4 Kit Version
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  2. #2
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    Another outstanding job.

    I'd like the full set.
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  3. #3
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    What about the Delta III? I thought it looked really cool.
    Read only mode

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  4. #4
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    Nice one Carl. Is the Delta II going to be offered in kit form (please say yes)such a nice looking rocket !!

    Are there going to be more Delta Mediums comming soon (my Heavy needs company )

    Paul

  5. #5
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    Quote Originally Posted by Delta-IV View Post
    I have just completed my Delta II model. It is the same scale as my Delta IV kits.

    It will fly on a C6-x and upto 9 A10-PTs.
    Very nice -- looks good!

    Has anyone else flown a 1/74th--ish scale of the Delta II?
    Closest I've come is a slightly larger Delta III.

    -Kevin

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    Back in 2000, I built and launched a 1/24th Delta II. No fins. 9.8lbs. Went to 455ft on an AT I357, straight boost. Peter Alway called it "an improbable lob". I've never flown it since. Attached are a couple pics.

    Those Delta IV's look very nice!

    -John
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  7. #7
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    Quote Originally Posted by ScrapDaddy View Post
    What about the Delta III? I thought it looked really cool.
    Apogee used to do a Delta III but no more, so it would be cool if someone came out with a good kit for it.

    Glenn

  8. #8
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    I've flown a 1/96 scale cardstock Delta II many times. No fins, just using the SRB's for stability.
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  9. #9
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    Quote Originally Posted by jsdemar View Post
    Back in 2000, I built and launched a 1/24th Delta II. No fins. 9.8lbs. Went to 455ft on an AT I357, straight boost. Peter Alway called it "an improbable lob". I've never flown it since. Attached are a couple pics.

    Those Delta IV's look very nice!

    -John
    Nice looking. How about flying it on something like a J-330?

  10. #10
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    Quote Originally Posted by Brent View Post
    Nice looking. How about flying it on something like a J-330?
    Anything much longer than a 1-second burn might cause it to start turning. I think the CTI J330 is about 2-seconds. AT I357 is around 1.2 sec burn. My Delta II only has a 38mm mount (stupid me). So, maybe the CTI J600 with 1.5 sec burn would work ok. 15g's and pretty flat burn.

    Like Bob's 1/96th Delta II, mine would be better if the strapons had nozzles for more rear surface area. The CG on mine is about 1/2 way between the nose and tail.

    -John

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    Quote Originally Posted by jsdemar View Post
    Anything much longer than a 1-second burn might cause it to start turning. I think the CTI J330 is about 2-seconds. AT I357 is around 1.2 sec burn. My Delta II only has a 38mm mount (stupid me). So, maybe the CTI J600 with 1.5 sec burn would work ok. 15g's and pretty flat burn.

    Like Bob's 1/96th Delta II, mine would be better if the strapons had nozzles for more rear surface area. The CG on mine is about 1/2 way between the nose and tail.

    -John
    Its a tail heavy design..I'll have to add some ballast on mine..still working the numbers.
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  12. #12
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    Quote Originally Posted by BobH48 View Post
    I've flown a 1/96 scale cardstock Delta II many times. No fins, just using the SRB's for stability.
    Nice, I like those nozzles, but since I'll be putting some 13mm's in there I didn't bother.
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  13. #13
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    Quote Originally Posted by Delta-IV View Post
    Its a tail heavy design..I'll have to add some ballast on mine..still working the numbers.
    My original weight estimate before building was about 6 or 7 pounds. It ended up almost 10 pounds with the extra nose weight. More noseweight required a larger motor, which meant more noseweight... and so it goes.

    -John

  14. #14
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    Quote Originally Posted by Delta-IV View Post
    I have just completed my Delta II model. It is the same scale as my Delta IV kits.

    It will fly on a C6-x and upto 9 A10-PTs.

    Has anyone else flown a 1/74th--ish scale of the Delta II?


    Photo below: (L to R) My prototype DIV Heavy, the new DII-Phoenix and DIV Medium 5+4 Kit Version
    Looks nice. Keep us updated.

    Bob

  15. #15
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    These are some gorgeous rockets. The Delta's are my second favourite brand of launch vehicles.

    A couple of questions though - i'm looking to do a semi-scale payloader loosely based on a cross between the Delta 4 and the Ariane 4 - i'm looking to either make or buy the motor nozzles on the stap ons? Can anyone point me in the right direction where I can get them?

    Also, who makes the paper/cardstock Deltas? Those are nice!

  16. #16
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    Quote Originally Posted by Jordan_RochellaSpace View Post
    Also, who makes the paper/cardstock Deltas? Those are nice!
    Unfortunately they are not available right now. They used to be on the Philippus Lansbergen site and there were about 10 different missions modeled in 1/96 and 1/72 scale.

    The designer is no longer affiliated with them and he took his copyrighted models with him. Last I heard, his intention was to put them on his own site when he got around to it.

    It's too bad, and these are not the first cardstock models to disappear. That is why I always download any card model that I find that I even have a remote chance of building in the future.
    Last edited by BobH48; 19th May 2010 at 04:54 AM. Reason: wrong scale stated
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  17. #17
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    Well at our Yuri's Night celebration, someone had made up a bunch of paper launch vehicles and was showing them off. Unfortunatly I didn't get the name of the guy who built them or the name of the website where he had downloaded them from.

    Anyways. I need engine nozzles for my project. I'll keep looking around.

  18. #18
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    Quote Originally Posted by Delta-IV View Post
    Nice, I like those nozzles, but since I'll be putting some 13mm's in there I didn't bother.
    I don't know that your boosters are big enough, but have you considered canting the the 13mm motors just a bit? If you can point them at the CG, it helps with stability, especially if all the motors don't light at the same time, or at all.

    -Kevin

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    Quote Originally Posted by troj View Post
    I don't know that your boosters are big enough, but have you considered canting the the 13mm motors just a bit? If you can point them at the CG, it helps with stability, especially if all the motors don't light at the same time, or at all.

    -Kevin
    That would be my choice if I upscale it, the 13mm motors are in a 13mm BT.

    On my rebuild of my Delta IV HPR rocket, I might look into doing that.
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  20. #20
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    Quote Originally Posted by Delta-IV View Post
    That would be my choice if I upscale it, the 13mm motors are in a 13mm BT.
    Cool.

    Something else that would be neat, but would add to the complexity, would be to do the motor ignition like the actual thing -- ground-start 6 of the boosters, and air-start the 3 remaining ones after the first six burn out.

    Of course, that introduces the complexity of on-board electronics into the build.

    -Kevin

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    Do I detect a growing consensus that the Delta II needs to be kitted?

    Hearing no objection, the measure passed by unanimous consent...
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    Photos of the "Fleet": http://www.flickr.com/photos/23694991@N03/

    I used to tell Mom, "...I want to fly rockets when I grow up!"

    She said, "Make up your mind, you can't do both!"

  22. #22
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    Quote Originally Posted by JAL3 View Post
    Do I detect a growing consensus that the Delta II needs to be kitted?

    Hearing no objection, the measure passed by unanimous consent...
    ..Okay, you win...pehaps I'll make a changeable option of flying it as a Delta III as well.
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  23. #23
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    Quote Originally Posted by Delta-IV View Post
    I have just completed my Delta II model. It is the same scale as my Delta IV kits.

    It will fly on a C6-x and upto 9 A10-PTs.

    Has anyone else flown a 1/74th--ish scale of the Delta II?


    Photo below: (L to R) My prototype DIV Heavy, the new DII-Phoenix and DIV Medium 5+4 Kit Version
    Carl,

    I've always wondered why they decided to use the Delta name on the DIV series? It looks to be 100% different hardware. They changed the name from Thor to Delta when the two were still very similar so it seems a little odd to me. The Delta II and III kept the same diameter as the old Thor/Delta to the best of my recollection yet the IV is huge in comparison.

    Argument could be made with the Saturn series, but at least the Saturn 1B and Saturn V used the same S-IV stage and similar command/service module payloads.

    BTW, all the models look great.

  24. #24
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    Quote Originally Posted by tbzep View Post
    Carl,

    I've always wondered why they decided to use the Delta name on the DIV series? It looks to be 100% different hardware. They changed the name from Thor to Delta when the two were still very similar so it seems a little odd to me. The Delta II and III kept the same diameter as the old Thor/Delta to the best of my recollection yet the IV is huge in comparison.

    Argument could be made with the Saturn series, but at least the Saturn 1B and Saturn V used the same S-IV stage and similar command/service module payloads.

    BTW, all the models look great.
    There actually is some "common" hardware between the II, III and IV. Mostly Avionics related and processes. The Delta III second stage and fairings are used on the Delta IV 4-meter Mediums. But, basically Boeing must have felt that having the familiar reliable Delta name was more marketable. Have you wondered what ever happened to the Atlas IV? It never existed, Lockheed marketing suggested to "one up" Delta is the consensus.
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    Last edited by Delta-IV; 15th May 2010 at 02:15 AM.
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  25. #25
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    That's a great poster you put up in the last post.

    Yep. I'm convinced. You need to offer THEM ALL!!!!!!!!
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    Photos of the "Fleet": http://www.flickr.com/photos/23694991@N03/

    I used to tell Mom, "...I want to fly rockets when I grow up!"

    She said, "Make up your mind, you can't do both!"

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    I'm seriously thinking about just going ahead and dumping my rocket plans and just buy a bunch of yours, Delta-IV.

    Because these are just terrifically terrific.

    If Boeing goes ahead and manrates the D-IV heavy as the Orion-Lite launcher, will you put a kit out of that?

    And if not, would you do it anyways? Please?

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    Quote Originally Posted by Jordan_RochellaSpace View Post
    I'm seriously thinking about just going ahead and dumping my rocket plans and just buy a bunch of yours, Delta-IV.

    Because these are just terrifically terrific.

    If Boeing goes ahead and manrates the D-IV heavy as the Orion-Lite launcher, will you put a kit out of that?

    And if not, would you do it anyways? Please?
    ..Aww shucks, yeas, I'd do it.

    My plans are to take the summer off from kit assembling and work this and some other projects I have left unfinished.

    I plan to put together a complete series of Delta II, Delta III and Delta IV (maybe a proposed Orion-Lite) kits by November-ish.

    Thanks for the kind words!
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  28. #28
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    Quote Originally Posted by Delta-IV View Post
    ..Aww shucks, yeas, I'd do it.

    My plans are to take the summer off from kit assembling and work this and some other projects I have left unfinished.

    I plan to put together a complete series of Delta II, Delta III and Delta IV (maybe a proposed Orion-Lite) kits by November-ish.

    Thanks for the kind words!
    Very good Carl.....my VISA will be on stand by !
    Oh but first ,I still need a Delta Medium to go with my Heavy.

    Paul T

  29. #29
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    Quote Originally Posted by Delta-IV View Post
    ..Aww shucks, yeas, I'd do it.

    My plans are to take the summer off from kit assembling and work this and some other projects I have left unfinished.

    I plan to put together a complete series of Delta II, Delta III and Delta IV (maybe a proposed Orion-Lite) kits by November-ish.

    Thanks for the kind words!
    Hey Carl! Have you been building a new prototype secretly on the side?!?!

    http://mysite.verizon.net/gfeveryear...PICT2871A.html

    (yes, I'm aware it's an Atlas V)...

    -- brian
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  30. #30
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    Quote Originally Posted by brianc View Post
    Hey Carl! Have you been building a new prototype secretly on the side?!?!

    http://mysite.verizon.net/gfeveryear...PICT2871A.html

    (yes, I'm aware it's an Atlas V)...

    ..shhhhhhhh don't tell anyone..

    We have those here too, not too detailed but big and look nice don't they.
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