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facthunter

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Everything posted by facthunter

  1. facthunter
    Different Cause in the Jabiru. Some similarity. I'm not that stupid as to be confusing the two... Jabiru fretted the cases .Nev
  2. facthunter
    Well spotted. The passengers (if any) would not be locked inside, either. Nev
  3. facthunter
    I'm pretty hard on them all But a lot are compromised by Poor management Particularly starting techniques and Avoiding Prohibited rpms, MP/ Rpm combinations over propping and using motor for short periods where they never get Properly warmed up. Motor cowled with adjustable Cowl flaps and properly Baffled with Air blast tubes on the parts that need them to be specially cooled and Lagged fuel Lines etc. ie Properly Installed . Nev
  4. facthunter
    Just as soon Have a Good Comanche, thanks. Nev
  5. facthunter
    They Had them in the C-150. They had them in each door. Nev
  6. facthunter
    ALL Planes have a comfortable taxi speed and its nowhere near V1. Nev'
  7. facthunter
    Thanks. Nev
  8. facthunter
    I wouldn't try that line at any enquiry. Nev
  9. facthunter
    The Plane was close to it's service ceiling and relied on the downslope to help it get back in the air It's a rehearsed procedure for that location. Sort of OK IF there's no climbers there at the same time. Nev
  10. facthunter
    I critically examine many aircraft engine in dept and they ALL have some design Faults No engine is bullet proof particularly piston engined ones. Rotax later motors are becoming more highly stressed and complex. People say Merlins were a great Engine and the highest TBO ever was 650 Hours . My comment wasn't generalised. It was related to the LONG studs holding alloy bits together that get Hot and expand at different rates.. Nev
  11. facthunter
    It would fit RAAus rules. . Nev
  12. facthunter
    The Walrus would have been one of the More rough water capable. Nev
  13. facthunter
    Pistons are the Most efficient of the ICE ones .Hydrogen to electric direct? Hydrogen is difficult to store. Makes things brittle Nev
  14. facthunter
    Not made up at all,. But carry on IF it makes you feel better. Do your own proper research if you really care. Nev
  15. facthunter
    For rescue etc? Wouldn't a helicopter be able to do the same? Nev
  16. facthunter
    Why stick with Piston engines IF you don't have to? Nev
  17. facthunter
    Its been happening. They are too long and the steel doesn't expand as much as the Alloy. It's not an uncommon problem in such designs. . Be interest to have my question answered. Nev
  18. facthunter
    What about your SAFETY in the Meantime? The days of people getting electrocuted should be over. Nev
  19. facthunter
    Get those earth return circuit Breakers installed or you are NOT legal. They will POP instantly when some thing is wrong and a proper electricians screwdriver will indicate which wire is active. Nev
  20. facthunter
    There seems to be a Major change there. Is that shortening the studs that have been Breaking in the Genuine Motors? Nev.
  21. facthunter
    Thanks. Often cranks have sections that are much weaker than the general section and that concentrates stress in those areas. Poor design. Usually where a throw goes to a crank pin section. Billet is not really like a bit of grained timber as some imagine if it's rolled properly. The ends of each rolled length should be discarded if there's any chance of a Scarf being there.. Nev
  22. facthunter
    I've seen Legless people coming out of a PUB, who were Blind drunk.. Nev
  23. facthunter
    Why would a billet Crank weigh More than a forged one? I can't see why it would have to. (refering back a little way). Nev
  24. facthunter
    That worked when I voted today. Nev
  25. facthunter
    it's Extremely Difficult to forge something like a six throw crank shaft with seven Main Bearings. The grain flow you refer to is not ideal either in that application as it is in a poppet valve where you an extrude the shape and jump it up to thickness it. Plenty of racing car shafts are from billet and the get a more balanced result as well. Aero shafts are often nitrided where stress reliving is achieved at the same time as surface hardening.. Crack testing is done new and at every rebuild. There is NO non destructive test for Metal fatigue. At some stage the Part should be discarded, "Lifed" or it was built far too heavy to be on a plane. .Nev
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