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facthunter

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Everything posted by facthunter

  1. facthunter
    dg, Your comment Lacked Logic. The rest of what I wrote you completely ignore. .There's plenty of reasons against Car engines & the redrive is a KNOWN problem. Properly engineered red Gears are Usually LARGE and often Sun and Planetary which is the Best. The Prop is often a significant flywheel and it's not good to Gear a Flywheel to a crankshaft. The Pistons also perform some work as a flywheel but it's cycling where they take energy, stop and give it back. This id at it's worst in flat OR in Line fours. Best is large number of cylinder RADIALS. Some Motors have tumbling counterweights which dynamically absorb torsional Variations. They give the reduction Gears an easier Life. ALL Gears create some frictional Losses which inevitably creates Heat. even in a small Motor it could be about 2,000 watts and backlash or play causes Hammering. Put a stethoscope against a Rotax gearbox and Have a listen or even a failed or Loose Harmonic Balancer . These are Large forces we are dealing with. . Nev
  2. facthunter
    If it's an adjustable hinged tab it can flutter and that's not something to Just disregard. Also if it runs to a limit how is the Plane affected?. AS far as side by side affects things , fuel disposition can do similar and you could Put any cargo to the Left side to compensate. I've flown a plane when test flying from Both seats. Aileron corrects the difference and it's not a lot. A length of Garter elastic would compensate. Nev
  3. facthunter
    That's JUST silly danny. Rotax have gone to a lot of trouble and expense because they KNEW they Had to.. Even Turbo Prop drive shafts (the high speed one) will fret splines IF not Loaded either way. You avoid "floating" them. Direct drive on small engines has a lot going for it. In good engineering you don't drive a flywheel through a gear either. Have you ever Heard a loose flywheel on a motor? It gives you an Indication of the LARGE forces involved..Nev
  4. facthunter
    I'm Not talking JUST about Cox's. That spring would alter flow a Lot.. Nice Pics by the way. Nev
  5. facthunter
    Don't fly a Tiger Moth, Then. Most U/Ls are pretty" active on the rudder" things. I just prefer to keep things simple on the Basis of Less to go wrong. You can do what you want but you have CHOSEN to go Public on this, so then we have a discussion. Isn't that the way it works? A hinged tab can cause flutter. Nev
  6. facthunter
    X air is a long way from Being a Spitfire THEY DO need rudder trim... Nev.
  7. facthunter
    MOST People don't find any of this Necessary. What if it Flutters? I've seen experienced pilots tie themselves in a knot setting roll and the rudder relationship in flight. IF you set a bit of engine offset that cancels out the Power effect in most U/Ls. Nev
  8. facthunter
    THAT depends a lot on the AEROPLANE No Matter how good you are.. They don't all spin the same and it depends on how long you have been in the spin. Sometimes it flattens out. Some Planes will recover themselves if you just let the stick go.. THAT is NOT the Optimum way. Positive action will always expedite recovery and loss of height but the technique Varies. The RoD of Many spinning Planes varies a Lot. IF it's a high rate, survival becomes unlikely. Note Airspeed in a spin varies little and is usual just above stall speed and "G" is not high. Nev
  9. facthunter
    Seems it's more Vague than it used to be. Now it's just where it's sparsely Inhabited by the Looks of it. . Hot and remote without shade I would avoid unless you fly near roads that have regular traffic. Nev
  10. facthunter
    It's NOT INCORRECT stuff IF it works better. Some of the fuel line I've purchased from normal outlets is rubbish. IF you are competing it could jeopardise all your effort. Nev
  11. facthunter
    Obviously It's NOT as SIMPLE as you infer. The reason being torsional vibration. Cars have Flywheels at the drive end and springs in the clutch and Harmonic balancers at the Other end.. ALL extra weight and cost. Nev
  12. facthunter
    Quite reasonable these days. Nev.
  13. facthunter
    Knowing what you are doing Helps. ELEVATOR determines Angle of attack. Nev
  14. facthunter
    Jetstar does flights Melb- Newcastle and no trouble getting a hire car there. Nev
  15. facthunter
    There's different sizes of chainsaw fuel line. The stuff used inside the tank will NOT Kink. It's a Klunk tank. Bending every time you change position. Like some Medicinal stuff to look at. Honey coloured. Nev
  16. facthunter
    Bit like Making F 1 Motors. Many makers have pulled out. Nev
  17. facthunter
    Porsche tried without success. Nev
  18. facthunter
    With a folding blade? It's a cycling Off centre thrust Proposition . Has to impose unwanted Loads. Simply balancing with a counterweight doesn't take account of the Problem. 2 Blades are the simplest and strongest You won't get interference till you fine the Pitch right off like when taxing with a RR Dart . If you've been on one you will remember the Noise and the Kerosene smell in the cabin. Nev
  19. facthunter
    Lack of QA would lead to general unreliability possibly to quite a high degree particularly with regard to the Pressed up Crankshaft. IF it slips at ALL, it's cactus. The Later ones have a slight taper on the fit which is pretty hard to engineer accurately. Factory ONLY assembly. Nev
  20. facthunter
    It WAS done but more of a curiosity than a good PROP position. Nev
  21. facthunter
    I believe you, But He used to come to Lethbridge where I instructed and I'm a good Listener and People tell me stuff, and I've ALWAYS been Interested in Motors. Built and Modified and reconditioned LOTS of them. (and still doing it). Nev
  22. facthunter
    For Most engines, running with the Cowls off unless Just very Briefly is a NO NO. A thorough warm up for Most engines is about 45 Mins in the AIR. An engine is best Left Inhibited till Put in normal regular use. Nev
  23. facthunter
    He TOLD ME about a few things wrong with them. Anything made, worked on or operated by Humans IS NOT PERFECT. What a load of rubbish your Last Post IS.. Nev
  24. facthunter
    I though ANY reliable information might be helpful. Nev
  25. facthunter
    You don't hear about the Ones that do. I used to be Mates with Bert Flood. Lycomings need a TOP to get to TBO. Hardly major surgery. Hydraulic lifters need to be checked for Bleed down Clearance. Same type of Lifter as in a 9xx Rotax I don't like Hydraulic Lifters in ANY Aircraft motor. Better with Manually adjusted tappets then you KNOW when things are going wrong and they don't have to Pump up to be safe. Nev
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