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  1. R

    Estes Shuttle

    Agreed. I can see the offset of the axis to be corrected perhaps by the asymmetrical distribution of the nose weight to one side, assuming you have the volume capacity to hold such weight needed. Its an admirable pursuit and rewarding idea. If you don't do it my calculation, and do trial and...
  2. R

    Bill Spadafora

    I knew him for such a short time. He was my section chief. We completed project together this spring, and I knew he was battling health issues for some time, and it makes me very sad to say the least. I'm lucky to have spent the time with him and wish he were still here. I am going to miss him...
  3. R

    3d black brant launcher

    Nice work!
  4. R

    Plastic Transitions

    Kruegon, if you need plastic, the only sources are: Existing vintage examples, re-issued Estes parts from new upcoming kits, or 3D printing options. Everything else, is not plastic. Your best bet is Shapeways, and at that scale it should be a cheaper side, relatively speaking. Look and feel can...
  5. R

    vintage astron alpha fin pattern

    Okey Doke! That sounds good, at least that is better than what we had before, so maybe SP-25 with its crooked lines and all, are the original form of the production design. I just wasn't convinced that is the case with info floating around at or near the same time after kit release. Jim Zalweski...
  6. R

    Moving to Florida?

    Hi, I am, a Florida native, born and raised. You get what you pay for, and there it doesn't pay for anything! Everyone, has a unique financial situation. Just don't expect anything when things go sour. There are no safety nets anywhere, but geez, they are the worst. The folks have no idea, not a...
  7. R

    vintage astron alpha fin pattern

    To summarily point out, its not so much the business relationship of the author to Estes that is of relevance here. Its the fact that Estes approved to have their name associated with the content and the call out in the title of 'The Astron Alpha' as the the design of the model rocket design in...
  8. R

    vintage astron alpha fin pattern

    You don't know anything about DAMON. And you dont have to, is the point. What you are suggesting has nothing to the corporate ownership, as there is no foundational underpinnings in the form of facts to support it. The nice thing about data, is that you can have repeatable events and results...
  9. R

    vintage astron alpha fin pattern

    There are two major points of dissemination here that needs to be tracked objectively as possible with some deductive reasoning helping in lack of any other facts available: 1) source material with dimensions published, how is this weighed in terms of authenticity? 2) foundational basis for...
  10. R

    vintage astron alpha fin pattern

    It's true but you still need to calculate all aspects of production which in some cases requires number and measurements, usually done with aide of slide rulers and and drafting tables. rounding doesn't work for linear board feet of material to be ordered on a large industrial scale run without...
  11. R

    vintage astron alpha fin pattern

    tip vortex in the sense it will be larger due to increased drag by the canted/ curved tip edge not parallel in the sp-25 scan. Its draggier and will slow rocket.
  12. R

    vintage astron alpha fin pattern

    :D'pretty sure' sounds very speculative to say the least..
  13. R

    vintage astron alpha fin pattern

    Sure they did. One piece of BFS-30 fin stock. That is a 3x9 inch sheet of 3/32 inch thick balsa from which the person building the model was expected to cut his own fins (using the aforementioned template as a guide). I can post an image of the bill of materials from the kit instructions if I...
  14. R

    vintage astron alpha fin pattern

    V.1 will have more tip vortex problems than V.2 just so ya know! :wink:
  15. R

    vintage astron alpha fin pattern

    The SP-25 scans aid informally to support the case of those dimensions, but I wouldn't I agree with you that it is the other way around and that they supersede the dimensions on the basis of being publicly released earlier than the dimensions. When you put your name on something such as Estes...
  16. R

    SpaceX Falcon 9 historic landing thread (1st landing attempt & most recent missions)

    George, Just a thought here, maybe ( for SpaceX) its good to know from the operations side, that it may be advantageous to have the capability to land in international waters on higher seas, free of landing rights and fees for regular operations on a case basis. Corporations, avoid paying a...
  17. R

    vintage astron alpha fin pattern

    I assume it as data that is specified to describe the design of the Alpha (as per the title of fig. 76). Why would you disseminate anything but the data published? Your 'expectation' is speculative as you know, and yet you build upon it with more. Its lacks basis just like my earlier example...
  18. R

    vintage astron alpha fin pattern

    Actually, it doesn't matter when it was published. It could have been published yesterday by Estes, as an after-the fact, through rummaging through their own historical archives, theoretically. The manufacturers specifications supersede all other graphical image, which is easily corrupted...
  19. R

    vintage astron alpha fin pattern

    When there is authorship of who owns it, you have to acknowledge it as their own, they being Estes. When they are dimensioned, its not arbitrary. Like I said never go with a graphic, when you have dims. So don't go with the cone, (An inconsistant graphic with no dims ) but do go with the fins (...
  20. R

    vintage astron alpha fin pattern

    I did this too, and it comes very close but not exact, there was suspected distortion in the scan, so no one really knows for certain due to capture reproductions through raster files (optical imaging error) and mechanical print errors. It does however confirm that the numerical floating point...
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