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  1. F

    Engine Oil Monitoring Device

    An oil condition sensor is badly needed for any kind of reliability.
  2. F

    two throttles center stick or center throttle 2 sticks?

    im building an occasionaly 2 seater airplane. so which is better? 2 throttles 1 center stick or 1 center throttle 2 sticks?
  3. F

    twin boom merits?

    whats the biggest advantage of twin boom design? with engines on the booms.
  4. F

    aluminum and wood construction

    i stumbled on the dh 103 hornet. the construction is based on the mosquito. the wings are interesting. it uses aluminum for tension members and wood for compression. Wing Design
  5. F

    dh mosquito fuel tank access

    Hi Im studying the mosquito wing. does the wing bay bottom skin come off for fuel tank access?
  6. F

    liquid cooling, oil and water

    how come air cooled engines are said to be more reliable than liquid cooled engines when both have oil coolers? as far as i know the technology for cooling both liquids are essentailly the same. is it the rubber hoses?
  7. F

    primary glider?

    what are the characteristics of a primary training glider? im thinking of building a few for a high school in a third world country. maybe it can be powered to self launch too? like an 18 hp briggs?
  8. F

    wide rear fuselage and rudder effectiveness

    does a wide rear fuselage affect rudder effectiveness? i need to widen and shorten a volksplane 2 design and in order to avoid steeply curved sides in the rear tailcone and construction difficulty im thinking of just having a wide rear tailcone. maybe i get an excuse to use an all flying vtail...
  9. F

    beam shear not related to bending moment?

    im studying shear web design and im a little confused. i know jourawski's formula is used to calculate the beam shear in the web but where do we get the shear force? the shear function from beam theory? so beam shear is more directly derived from the lift distribution? and its not related to...
  10. F

    pendulum vibration absorber

    Hi Whats the issues about using pendulum absorbers in the flywheel end of an auto engine?
  11. F

    camshaft chain reliability

    im a little concerned about the reliability of timing chains. can we trust timing chains? and same goes for the belts. im looking at a toyota 3f engine and it uses a gear to drive the camshaft. the power is ideal for direct drive and its dirt cheap but its heavy.
  12. F

    which auto engine can run at full power for long periods?

    which engine can do that? cheaply?
  13. F

    engines need thicker valve stems to work in aircraft?

    i have read about comparisons to valve stem size between certificated engines and auto conversion. is that true? does it even matter in a liquid cooled head?
  14. F

    wood core

    Hi Has anyone tried using wood core composites? Specially glass over plywood? I know end grain balsa has been used for a long time but its very time consuming to build. Is it easier to use wood core than foam core?
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