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  1. S

    Not-so-solid massive core wings: Lightening the core foam

    I guess they'd have to be cut to shape before gluing then. The different densities would be to save weight without creating voids.
  2. S

    Not-so-solid massive core wings: Lightening the core foam

    Did I post this earlier in this thread? I'm too lazy to check. Now you wouldn't have to do it in exactly this way, but you see what I'm getting at. Epoxy the different foam types together, hot wire it into shape, and glass it.
  3. S

    Not-so-solid massive core wings: Lightening the core foam

    Is it workable to bag the wing first, and core it with a hot tube after everything sets? You would have to leave the tips bare. would that mess things up?
  4. S

    Not-so-solid massive core wings: Lightening the core foam

    The camber issue would be solved by factoring it in when choosing your airfoil. I missed the spar depth issue. Dangit.
  5. S

    Flying wing as cheap and simple option for basic fun flying.

    Indeed, but that ship sailed with the mention of in-wing propulsion. Simple would be going with a half dozen little electric props and motors sticking out of the leading edge. Using six means you can use the larger-scale RC props and motors.
  6. S

    Flying wing as cheap and simple option for basic fun flying.

    For some sort of in-wing propulsion I think you would need to use fanwing type longitudinal blowers.
  7. S

    Not-so-solid massive core wings: Lightening the core foam

    How about this. Carve out depressions on the underside of a solid foam wing, and have the fiberglass skin conform to those depressions instead of enclosing them. The solid foam fore and aft is the "spars" and you can generally get away with a lot of shenanigans on the underside of a wing...
  8. S

    Flying wing as cheap and simple option for basic fun flying.

    I'd lean towards a line of little electric props all along the leading edge so you can blow the whole wing.
  9. S

    Not-so-solid massive core wings: Lightening the core foam

    Building like that it would be easy to increase the size and/or number of cutouts as you go from root to tip for optimal mass/strength distribution.
  10. S

    The AFB (Amazing FleaBike)

    I'm no engineer, but this seems like the best solution as it follows the basic rule of making stuff thickest where it needs to be strongest.
  11. S

    The 'daydreamers' thread...post your craziest designs and concepts here

    Something like that already exists.
  12. S

    Bourke engine viability?

    Right, that's why I have the oil flow inside the piston and crosshead rod to get to the rings.
  13. S

    Scratch Built Radials

    Consider that a radial two-stroke that uses a simple crank-mounted blower for scavenging doesn't need to run the fuel through the crankcase, so it can use conventional lubrication. If done with ports for both intake and exhaust, there will be some oil consumption, but it cuts down on the number...
  14. S

    Scratch Built Radials

    What method of induction and scavenging does it use?
  15. S

    Bourke engine viability?

    I've seen a guy on youtube doing a test run of his bourke. That sucker sounded ANGRY, but it ran quite well as far as I could see. As Topaz has pointed out here and other places, You also have to be a good businessman to set up production of a new engine, which has tons of overhead costs just to...
  16. S

    Very low aspect ratio planes?

    Well, prone pilots are like pusher props in that they do great if you get them just right, but suck if you don't, and getting them right involves compromises that may be impractical depending on the airframe. Anyhow, twin facetmobile. Though this one one is technically a smoothmobile. Forward...
  17. S

    No wonder it’s called a Flea

    I guess this is why some of the guys here prefer motorcycle-type aircraft seating. He's one missing panel away from Flintstoning that thing.
  18. S

    The 'daydreamers' thread...post your craziest designs and concepts here

    Looks a little nose heavy. I'd stick a canard on that. Everyone remember this bad boy.
  19. S

    A FrankenFour Inline?

    Good. Needing belts or gears would defeat the goal of simplicity. Stick 6-8 cheap little cylinders on there and oh sweet lord all that blessed torque.
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