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  1. S

    Gust alleviation for light plane comfort

    Years ago I remember seeing a picture and brief article, it was from back in 1940s Gus Palmquist put spring loaded shocks on the lower end of a Tcraft lift struts.
  2. S

    Stroker engines in airplanes

    Slightly of topic wht do aircraft engines have a full 360 circumference piston skirt while many high performance automotive piston only have skirt 90 deg to the piston pin to prevent piston rocking.
  3. S

    Limbach VW Engines

    What hp do these make? Would this make a good 1/2 vw for LE XL?
  4. S

    912 in place of A-65

    Drill the rods, repitch the prop turn it faster making 75-80 hp if climb is what you want whole lot leas work.
  5. S

    Unusual biplane bracing

    I would expect the interplane wires to allow more flexing than a solid strut thus increasing wing movement facilitating attachment wear and increased flutter potential
  6. S

    "Hiding" the propeller

    What about a tear drop shaped PW5 style fuselage mid ships multi blade ducted fan with movable naca ducts ( movable panel of duct hinged on forward end of duct) ducts on left, right and top side for air inlet to fan. And two aft hinged panels allowing fan thrust to exit. Use hybrid ICE Bat...
  7. S

    When to Use Clevis Bolt instead of a Clevis Pin?

    My pet peeve is mechanics not tightening bolts adequately to make the bushing or bearings do the work. The bolt spins and wear the fixed structure holes.
  8. S

    What airplanes have you flown?

    J3 BC12D Tcraft Interstate cadet Tri-champ 7ac champ L3 Aztec PA 31P-435 navajo PA31 310, -325, -350, navajo Chyenne III Chyenne IV (what a Rocket!) 2-33 Grobe103 ASK 21 Duo Discus 1-26 Russia PW5
  9. S

    The Case for Tandem (Monowheel) Landing Gear

    In hu
  10. S

    How do Manufacturers Prep Aluminum?

    Boeing specs had anodize with and without Dichromate seal. Dichromate seal improved corrosion resistance but if mineral solids are a bit high or if sealed too long primer paint adhesion was an issue especially with the water borne epoxy primer.
  11. S

    Vans finally taking the laser cut hole cracking problem seriously.. 07-04-2023

    As I recall Boeing required a minimum of 1/32” material removal due to the heat affected zone
  12. S

    Let’s Say I Wanted to Fly on Pedal Power

    If you tap the pictures quickly you can make it flap!
  13. S

    Lets talk about wood

    I too would like to know your source im close enough to texas to go pick it up
  14. S

    Nut plates vs Rivet Nuts?

    Well said ! Which piper factory? I was liaison engineer at the Lakeland FL plant on Navajos Cheyenne III and IV 76-86 Before being the last engineer in the plant and turning out the lights.
  15. S

    Rivet replacement

    These are either cherrylok or cherry max rivets. If the head diameter is about 1/4” its a 1/8 rivet. use a sharp number 40 drill bit to drill out the locking ring. Center punching the powder metal filled stem may help but an experienced mechanic does not need to. Used plenty of pressure and slow...
  16. S

    Out of Great Respect

    I worked on the 747 as an engineer of one sort or another from Oct 86 for 28 years at Vought Aircraft. The oldest designed component was a std formed sheet metal stringer splice in the aft body that had a revised dwg release date in 1947. A lot of great history with stories of the gold plated...
  17. S

    Antenna for handheld radio in tube/fabric aircraft (Sonerai)

    Cajole the Ham buddy he understands1/4 wave antenna and ground plane needs. And he can measure the SWR. The rg 58 cable works for most aircraft but the shielding on the rg400 is much better and was necessary on my TCraft running unshielded upper plugs. Moving the antenna aft also reduced the...
  18. S

    Any thoughts on my AC-5M project?

    1 knot per min. Is approx 100 feet per min Also about .5 meter per sec most modern US aircraft use knots for airspeed hence the knots for most modern varios. And it provides larger font on 2.25 dia instruments in small instrument panels of modern gliders.
  19. S

    The Last 747 Has Rolled off the Production Line.

    I worked for LTV aircraft products group/Vought aircraft/Northrop Grumman/ Vought Aerostructures /Triump group from 86 till 2014 starting and ending my engineering career on the 747. 10’s of thousands of people worked to build the Queen of the skies. And the stories range from Tom Tune hitch...
  20. S

    question about a genrator design

    But dog imagine the possibilities! So the counter rotating stator will have an equal and opposite torque to the rotor driven fan. With a known energy / velocity imparted by the first fan the second fan pitch can be adjusted to maximize airflow velocity / thrust and the heat energy being...
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