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  1. One Sky Dog

    Flying Pictures; Post Yours

    “If it’s not there, it costs nothing, weighs nothing, and is 100% reliable.” Wow Pops my thoughts for many years. Enjoying 11,000 MSL for a couple of hours! 66 lbs.
  2. One Sky Dog

    Flying Pictures; Post Yours

    The magnificent Colorado in the bottom of the Grand Canyon shot from my Viking Dragonfly!
  3. One Sky Dog

    Junkyard motors?

    BD-4 used a V8
  4. One Sky Dog

    Overhauling a HAPI 65HP VW, What to expect?

    HAPI = UNHAPI from 500+ hours behind two. My first engine had 300 hrs on it and shortly after the dynamo stator magnet ring failed and stopped the engine. I replaced it with a Great Plains dynamo but had to machine the accessory case. HAPI starter motor is junk adapted another starter to the...
  5. One Sky Dog

    Parts Wanted Dragonfly MkII plans wanted

    Project Dragonfly with plans , fuselage, wing with ailerons, good canopy. I bought this from an Idaho builder and was going to put a Corvair on it. My flying Dragonfly/HAPI engine had a propeller hub failure in 2006 and I have converted it to a Corvair powered Dragonfly. I no longer need this...
  6. One Sky Dog

    Local crash this morning

    Q not a Dragonfly!
  7. One Sky Dog

    Dragonfly builder

    Actually it is easy to make legal. It is a plans built aircraft the requirement is amature built not professional built. Kit planes 51% rule does not apply as the Dragonfly was never a kit approved by the FAA. Just like OSH one week wonders no one individual needs to build 51% just amateurs.
  8. One Sky Dog

    Anybody Hear About This Piper Rudder SB??? Might Affect Experimental Cubs?

    1960 PA-22-150 not 1060
  9. One Sky Dog

    Anybody Hear About This Piper Rudder SB??? Might Affect Experimental Cubs?

    I had to land at an airport in 2021 and trailer my 1060 PA-22 home. It had the big beacon on it. The beacon was shedding vortices right and left making the top or the rudder vibrate. I am sure the 4 lb beacon was not accounted for in the design. As a manufacturing engineer who understands...
  10. One Sky Dog

    Reducing weight by using composites

    Interesting thread, it is not the material cost of composites it is the labor cost per pound of manufactured parts. However the trends I have seen in aviation and the history are moving toward composite structures. Early airplanes wood and fabric. Followed by steel tube and fabric. Aluminum has...
  11. One Sky Dog

    Ultralight biplane flying wing

    Great fun at 12,000 ft no engine. Great ridge glider bad thermal glider, too stable directionally.
  12. One Sky Dog

    Propping to Avoid Engine Overspeed

    Horsepower is absorbed by propeller diameter and disk solidarity. You need more blades if you cannot swing a larger diameter. Adding blades increases lift and drag. Drag governs your prop speed lift increases prop thrust. Pitch sets where you are in the power band. It is a trade off with a...
  13. One Sky Dog

    Wooden aircraft and crash safety

    True I have never flown an EZ . So what is your analysis if he could have climbed away at 2000 ft/ min? If certainly looked like drag greater than lift as he flopped it on. My opinion.
  14. One Sky Dog

    Wooden aircraft and crash safety

    While it is true that canard aircraft do not stall/spin there are still ways to screw it up. While in high AOA flight the drag curve goes exponential. Even with full power you cannot climb at low airspeed. The save would have been hold in ground effect, build airspeed and go around. Instead it...
  15. One Sky Dog

    Kite/Wings

    Hi Dan! I will be driving to OGD next week to get the Dragonfly flying let’s get together. Glad to see your opinion on this subject. I flew the EZ-Riser around 50 hours. Not much of a thermal king but I did hit 15K over Crestline one day. Roll and yaw were coupled but turning was quick and...
  16. One Sky Dog

    Kite/Wings

    A modern hang glider has multiple design features to recover from "unusual attitudes" . I once thought that was true. I have since gotten my private pilot certificate and fly airplanes with control surfaces. Control surfaces work in positive or negative G situations. The multiple design...
  17. One Sky Dog

    Kite/Wings

    Might keep you from hitting the sail but the unloaded sail is not under your control.
  18. One Sky Dog

    Kite/Wings

  19. One Sky Dog

    Kite/Wings

    My 1982 Comet used a floating crossbar that facilitated billow shifting of the sail so the inside wing produced less lift than the outside wing. The weight must be moved laterally off centerline for this to happen. Pitch is moving the weight forward or back by moving the control bar. Ridged...
  20. One Sky Dog

    Quickie/Q2/Dragonfly control arrangements

    Ok maybe I was just thinking in the wrong terms and locally instead or the 30 ft sphere of influence. The total lift does not change just the distribution between canard and rear wing. With a simple flap on the canard and on 126” of the rear wing. When the rear wing flap is deflected down the...
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