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  1. 8davebarker

    Anti-ice for experimental.

    Their is a an alternative to heat and or chemical de-icing, about 15 years ago I equipped my Mooney 231 with a 2” wide Kapton printed circuit strip along the leading edge of the wing. (See photo ) This had interdigited gold plated fingers. By applying ~ 400 VAC to the alternate fingers I could...
  2. 8davebarker

    Milling machine/lathe options

    I bought the Single phase to 3 phase 220v, 2, 2 Kw motor control. Works great. Also has provision for digital control. About $70 at Banggood.com
  3. 8davebarker

    DIY 400 year nuclear battery: Electric Aircraft Recharging Challenges Solved ;)

    Her is a link to a real nuclear battery 1990 B&W video. Used Krypton 85 and a resonate tank circuit for AC output.
  4. 8davebarker

    DIY 400 year nuclear battery: Electric Aircraft Recharging Challenges Solved ;)

  5. 8davebarker

    Gas turbine help

    [email protected]
  6. 8davebarker

    Gas turbine help

    Is there anyone on Homebuilt Airplanes fluent in gas turbine technology? I have a radial compression turbine design in Solidworks. (Very high compression with no leaks.) I am moving from the “unbridle enthusiasm“ to the “cautious optimism” phase of the project and would love to pick the brains...
  7. 8davebarker

    New engine , 120 hp , 80 pounds

  8. 8davebarker

    Auto fuel STC and Ethanol

    Some years ago an extensive test of E85 was run in Texas using a Mooney 201 and a Cessna 182. The only issue noted was the fail ( leak) of a fuel selector gasket if the 182 . The cause may or may not have been due to the alcohol.
  9. 8davebarker

    Verhees Delta D2 ? Does anyone know if any plans have ever been sold for it ?

    Need someone like Vans that is set up to do CNC punch work for self-aligned jigging via Clecos. van’s might view this as competitive with the existing RV-x products. But I perceive it as a slightly different market segment. In light of the old axiom “How to make a small fortune in aviation...
  10. 8davebarker

    New rotorcraft concepts

  11. 8davebarker

    Why battery-powered aircraft will never have significant range

    Nope . A linear alternator outputs a pure AC sine wave
  12. 8davebarker

    Why battery-powered aircraft will never have significant range

    a linear alternator outputs a pure sine wave AC output
  13. 8davebarker

    Why battery-powered aircraft will never have significant range

    RE: electric hybrid most compact linear alternator is the Israeli linear alternator 16KW in a suitcase. Needs and order of magnitude improvement for aircraft use. see actual working hardware got to: This is a 16KW linear alternator smaller than a suitcase.
  14. 8davebarker

    Why battery-powered aircraft will never have significant range

    The holy grail for batteries to be competitive with gasoline is 1KWH / lb.
  15. 8davebarker

    US Military Shoots Down Fourth Flying Object Near Michigan

    Has anyone seen a photo of these flying objects claimed to be about the sizeof a car? And allegedly being shot down by missiles launched from F-22 aircraft. I have searched the web and found nothing. Is this all to distract us from the regular day to day political corruption?
  16. 8davebarker

    Cutting 4130 sheet

    I use the 4-1/2“ Harbor Freight carbide friction blade cut off wheels in an angle grinder and the HF 7”:carbide cutoff wheels on my table saw. They make a fast cut and are cleaner than my hand held plasma torch. If I need and outside radius, I just make multiple cuts near the scribed radius and...
  17. 8davebarker

    Workshop lighting

    The Harbor Freight 4’ LED lamps are fabulous shop lights super super bright! And less than $20 I have a couple in my shop and will be replacing the remaining existing 4’ double florescent lamps soon.
  18. 8davebarker

    Styrogoo

    Does anyone has experience with the DAP foam board adhesive? It is a thick paste delivered via a calk applicator. less money than the 3M 77 foam spray adhesive
  19. 8davebarker

    Wind turbines falling

    wind turbine failures
  20. 8davebarker

    Counterflow Radiator Design

    I built a counter flow radiator for both oil and water cooler 6” diameter by 18” long. 56 tubes 1/2” air tubes with a 3D printed “multi nozzle “ for each tube. Hot water enters from the back end and moves forward. Cool air moves from front to back. This maximizes heat transfer. Unit hangs below...
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