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IInteresting read for the Pushrod vs OHC debaters :)

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    #121
    not according to my friend the AIRCRAFT ENGINEER AND PILOT who just finished his 2nd trade. I'm sure Bill will confirm, though we all know he doesn't know much about aeroplanes huh.

    manufacturers for a long time wouldn't invest in new engine designs for fear of opening themselves to litigation if any new design failed. They would be blamed for any engine failure because it deviated from the approved design, which is the Aero engine. They even regulate what type of sealants and bolt types during engine assembly!

    Any deviation from the Aero design is considered an experimental motor and cannot be used commercially. they are only now looking at new or different tech such as EFI and diesel motors for light aircraft.
    Turns out, far too much has been written about great men and not nearly enough about morons


    Originally posted by seedyrom
    my neighbours called the cops...... not because of the sound of me working in the garage was too loud, but because i taped a cardboard box to my back, covered my self in vaseline and pretended i was a snail on their lawn

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      #122
      The same argument would apply to aircraft designs then. Yet they still come out.

      The real reason for the lack of engine design progress would be commercial. In other words, the pushrod designs are good enough, it is not worth it to change.
      Richard's DatsunZ lappin LakesidZ http://www.youtube.com/watch?v=47OSh...&feature=g-upl

      “Freedom of speech does not protect you from the consequences of saying stupid shit.”
      ― Jim C. Hines

      “Everyone is entitled to his own opinion, but not to his own facts.”
      ― Daniel Patrick Moynihan

      “Four hostile newspapers are more to be feared than a thousand bayonets..”
      ― Napoleon Bonaparte

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        #123
        Yep, aeroplane engines haven't changed much in about 40 years.
        The most advanced ones were in WW2, and they were the Merlin's & Griffon's by Rolls Royce.
        Yes, they four-valve engines.

        Secoh is exactly correct in what he wrote. Litigation is the driving force unfortunately. Also cost, they're extremely established in the way they do things, and are very reluctant to change anything at all.
        A friend of mine designed a very clever vibration reducing device that went inside the end of the flat-6 crank and he spent month trying to sell it to Continental.
        Despite everything being perfect and it working well, they wouldn't take it.

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