Neil_W's half-baked design thread

Discussion in 'Scratch Built' started by neil_w, May 8, 2017.

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  1. Nov 20, 2019 #871

    kuririn

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    Wow, what a great idea!
     
  2. Nov 20, 2019 #872

    Bruiser

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    You could do it :)

    -Bob
     
  3. Nov 20, 2019 #873

    boatgeek

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    Now I'm thinking what one could do with a stationary central core, a few wheel bearings out some rollerblades, and slightly canted fins in the 6-fin section(s).
     
  4. Nov 20, 2019 #874

    neil_w

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    For all the effort, I don't know how well you'd actually see it in flight. Would look cool on display though.
     
  5. Nov 20, 2019 #875

    kuririn

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    Make the section between the smaller fins clear plastic tubing.
    Stationary central core is the stuffer tube.
    Maybe some led lights.
    You could have your translucent decal or wrap on the clear tubing and backlit by the leds.
    Swirling plasma?
    Oh wait, that's another rocket.
    Maybe too "busy"?
     
  6. Nov 20, 2019 #876

    neil_w

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    This is definitely a plasma-core-like construct (although this one came first. :)) A lit core would definitely be cool for a night launch, or for display.

    This design needs some work, though; there's something not quite right about it. I like the wing shape, and the general idea of the warp core, but that's about it.

    If it's gonna be a real sci-fi model (and it seems like it is) then the front core and canards (or whatever you want to call them) don't really make much sense.
     
  7. Nov 20, 2019 #877

    mbeels

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    For some reason I stopped getting notifications from this thread, I'm going to unwatch and rewatch....

    I really like #1 as well! The grey may be an improvement, but I don't think that the rocket will be ugly in all white :).

    You have a more discerning eye than me. Any idea what it is you don't like? Proportions, colors, cosmetics?
     
  8. Nov 20, 2019 #878

    neil_w

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    I actually love the grey, but it adds difficulty to the decaling that I'm not really interested in dealing with.

    Mainly what I said above. It's possible that with a good paint job it would be nice.

    Right now I really need to do a clean-sheet new design or two.
     
  9. Nov 20, 2019 #879

    mbeels

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    Maybe coming back after a break with a fresh eye will give you a better perspective.
     
  10. Nov 21, 2019 #880

    jqavins

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    Who was it did that "spin can" build thread a while ago? He worked out all the details, so one could use that design for this mid section.

    And as for:
    when has not making sense ever stopped the designers so sci-fi vehicles? OK, lots of time actually, but there are plenty of others that were not stopped.
     
  11. Nov 21, 2019 #881

    Nytrunner

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    Jim Jarvis for his high-power multistage projects

    Unless Neil bites the bullet of high power, Jim's solution is far too heavy for any of these builds
     
  12. Nov 21, 2019 #882

    neil_w

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    @KenECoyote also made a spin can on a smaller rocket. Still too big for my typical application.

    I usually don't particularly care, but in this case the contradictions really bug me. Just my own reaction when I look at it.

    At some point hopefully I'll find a way to use those wings, because I do like 'em.
     
  13. Nov 21, 2019 #883

    jqavins

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    If you want a good sci-fi reason for those six canards you could forgo any plasma pattern under them and instead call then cooling veins for life support systems. On board systems of all sorts generate a lot of heat, and keeping the crew or passengers comfortable requires a way of radiating that heat out into space.
     
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  14. Nov 21, 2019 #884

    BABAR

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    Sounds like Estes AstroBeam
     
  15. Nov 21, 2019 #885

    BABAR

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    I remember a helicopter rocket, I think QCR, with a body tube around a slightly smaller body tube, lubricated with graphite, that allowed the rotors to spin with little rotation of the main tube and fins....
     
  16. Nov 21, 2019 #886

    kuririn

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    http://store.heavenlyhobbies.com/07-024-0100.html
     
  17. Nov 21, 2019 #887

    neil_w

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    Interesting!

    Also, Heavenly Hobbies used to be the on-site vendor for our local launches. Those were the days... *sigh*
     
  18. Nov 21, 2019 #888

    BABAR

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    Yup, that's it.
    Heavenly Hobbies still has listings on a lot of products (QCR, Edmonds) which are permanently out of stock. Just a heads up, if anyone was thinking about trying to order that Heli.
     
  19. Nov 21, 2019 #889

    neil_w

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    I thought they were completely out of business, website notwithstanding.
     
  20. Nov 21, 2019 #890

    kuririn

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    Still in business. I think the owner was trying to sell a couple of years ago since he was working in the New York area and the store was in another state, IIRC.
    Bought a couple of old HH kits a few months ago. Came with a sim program on cd that runs on Windows 7!:eek:
    The 24mm version of Ultimate II copter rocket was still available a few days ago, but the shipping put me off.
    Laters.
     
  21. Nov 21, 2019 #891

    neil_w

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    Interesting. At the time, he was trying to sell because he was moving to Florida (I think) and didn't want to take the business with him. If he's still actually in business then it makes me wonder where he ended up. 'Cuz if he's still in NJ area I wish he'd come to our launches like he used to. :)
     
  22. Nov 25, 2019 #892

    Tobor

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    Hmmm......

    Upscale to 4" Canvas Phenolic, use Delrin/POM/Acetel bearings and a high torque DC motor....

    Maybe next year....
     
  23. Nov 26, 2019 #893

    BABAR

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    I think QCRs Ultimate II helicopter had a spinning hub, I think it was a tube over a tube, lubricated with graphite.
    At least on this review
    http://archive.rocketreviews.com/reviews/all/qcr_ultimate_ii.shtml
    It didn’t work very well, but part of that is likely that there was so little resistance from the main body spinning that it didn’t matter.

    So may be do-able relatively simply. However, the spin would not likely be OBSERVABLE, so not sure the effort would be worth it.
     
  24. Nov 26, 2019 #894

    Charles_McG

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    I’d cant the inside vanes one way and foil/tab the outer fins the other way.

    Still might not be visible. It needs a paint job that makes different a illusion if spun widdershins or deiseil.
     
  25. Nov 26, 2019 #895

    mbeels

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    Good morning Charles, I can't tell I don't have a large enough vocabulary, or if you're taste testing Cider this morning. :)
     
  26. Nov 26, 2019 #896

    neil_w

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    I can imagine that with some smooth molded plastic (Delrin would be nice, or ABS or whatever...) you could manufacture a little pod that would spin nicely. Hand-fabricating one would be harder.

    Still not worth it for something small like that I don't think.
     
  27. Nov 26, 2019 #897

    neil_w

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    Maybe both! :)

    I learned two new words today, cool.
     
  28. Nov 26, 2019 #898

    Charles_McG

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    My vocabulary is brobdingnagian.

    And whiskey is for breakfast.
     
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  29. Nov 26, 2019 #899

    mbeels

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    And now I have as well, but I'm sure I'm not pronouncing them right.
     
  30. Nov 26, 2019 #900

    Charles_McG

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    I don’t know that it’s correct, but I say ‘DAY-sill’, since it means ‘sun wise’
     

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