Recent content by billyvray

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  1. billyvray

    Would planes be better if they were more like birds?

    Neat stuff. Here is another variety:
  2. billyvray

    An example Kohler

    I do not offer this as a way to use a vertical shaft engine on and aircraft, just an example of how it's been done in hovercraft and airboats. They use a v belt and two extra pulleys for hte 90 degree change. The belt is long enough it can twist easily. I'm not sure how one would tighten this...
  3. billyvray

    Unlimited Air Racing Dead?

    I still think this would be cool for small venues.
  4. billyvray

    Trailer Design - Resources?

    I'm not an expert on the Timbren. The info calls out hollow rubber bladders for the main support. Also there is an opposing rubber bladder on the front side that acts as a damper. No air bags. I've never seen it or how it works but it is interesting.
  5. billyvray

    Moni Motorglider

    In a similar vein, I would present also the ZDZ engines (4 cyl 420cc and 500 cc) available with electric start and 1:2.7 reduction. https://www.zdz.eu/inpage/zdz-500b4-jsr/ 37 pounds (17 kg) and 50hp...$6k range
  6. billyvray

    Interest in a modern incarnation of the Farman F.455 Moustique?

    I agree, that the independent caps might be able to move. Now, the view (#3) showing the C channel top and bottom and the corrugated panel in between might be good, approximating a box spar.
  7. billyvray

    Bally's Bomber (1/3 Scale B-17)

    I found this video of the Bally Bomber leaving Oshkosh 2021. I cannot help but love the look of the pilot hanging out the cockpit while taxiing.
  8. billyvray

    The CFM Shadow - thoughts, opinions?

    Good tough machines. Interestingly, derived from Volmer Jensens' original VJ-23 design, then beefed it up as the design grew. Here are some pics of the prototype. Note that it is still a cantilever wing design at this point, and I assume it could be dissassembled just like the VJ-23 could. He...
  9. billyvray

    The A-4 Skyhawk

    ...and Fat Albert still had rocket-assisted takeoff...that was cool.
  10. billyvray

    What we think we want.

    I liked that book too, Pops.
  11. billyvray

    A few days in the biplane life, and my oldest ever passenger

    Rather than a heat shrink covering what about a formed (molded?) piece of trim? A stiff but somewhat flexible rubber or plastic. The front side open with a channel made to snap on over the able, but not entirely cover it. You could see the cable to inspect for fraying and if deeper inspection...
  12. billyvray

    What we think we want.

    Stits had some neat options. I wish his plans were more available rather than $300 sets from a museum. These were proper quick release and manual fold affairs. I would love a copy of these plans!
  13. billyvray

    Ultralight Airplane Workshop on Youtube

    For those that don't want to find it on the site: UWS-4 design As far as Facebook goes, it is what you make of it. I've edited and blocked all the junk news feeds and have it tuned to show all the hobby groups I like (boats, motorcycles, airplanes, model building, gardening, etc) and...
  14. billyvray

    Airplane plans inventory

    Just a picture added to a post.
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