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vk3awa

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Everything posted by vk3awa

  1. vk3awa
    Thanks Mike, I often wondered what happen to Maurie.
  2. vk3awa
    The water cooled heads were a concept to overcome some head heating issues with earlier generation engines. Jabiru changed the fin design of the cylinder heads quite some time ago which overcome cooling issues. The later generation heads were generically called fine finned heads. Water cooled heads would add weight, water and complexity and are not required. Of course this is only my opinion.
  3. vk3awa
    Hi guys, I’m looking for a diagram of the pin in/out for the DB25 connector used in the VHF wiring harness. THANKS.
  4. vk3awa
    Probably failure to do checks was this pilot's undoing. We are all taught to do checks during our standard circuit pattern and it becomes habit. This was a straight in approach which probably didn't help. I watched this happen as I have a great view of 09/27 from my hangar. I spent three hours helping get the aircraft on its wheels. Back engine had a prop strike. Cargo pod on the belly took all of the airframe damage - Lucky he had a cargo pod.
  5. vk3awa
    See PapaFox's post re 262AP - he has it correct.
  6. vk3awa
    That's sad Bruce. The GFA used to be a great model of how it should be done. I note in your Avatar you own a Libelle. I use to own VH-GBU.
  7. vk3awa
    Well - my thoughts for what they are worth. Over a short period of time the available L2 list will be diminished to mostly commercial operators that have a financial interest in keeping their level 2 authorities. A lot of others that have volunteered many hours of their time to helping others with maintenance and repairs will opt out because the renewal process is too onerous. This will cause many aircraft owners to carry out their own maintenance/repairs as they will not be able to justify the cost afforded to their hobby to pay an L2. The L2 renewal process should be simplified with a notification by mail with a simple - do you wish to revalidate your L2 authority for another two years Y/N. Again these are my thoughts right or wrong and I wont get into a verbal too and fro with any members over them. Oh! and thanks for taking the time to read them. :-)
  8. vk3awa
    I have seen a video of the event. The aircraft was flying around at or below tree top height for some time and appears to have simply flown into the power lines.
  9. vk3awa

    Tyres for J120

    vk3awa replied to vk3awa's topic in Jabiru

    THANKS Dave, Tried that. No good. Bolt head still rubs on tyre wall. Cheers Daryl
  10. vk3awa

    Tyres for J120

    vk3awa replied to vk3awa's topic in Jabiru

    Mackgrl, I'm not sure how turning the caliper bolt around would help. Still have to fit a nut which would also foul on the tyre. How did you overcome? Cheers Daryl
  11. vk3awa

    Tyres for J120

    vk3awa replied to vk3awa's topic in Jabiru

    Yeah I have thanks Doug. It seems the supply of suitable ribbed tyres has dried up. I ended up ordering some from SkyShop who are an Australian reseller for Aircraft Spruce.
  12. vk3awa

    Tyres for J120

    vk3awa replied to vk3awa's topic in Jabiru

    Thanks you are right Geoff. Already been down that path and received a refund.
  13. vk3awa

    Tyres for J120

    vk3awa posted a topic in Jabiru

    Hi, Just fitted a new set of main wheel tyres on my Jabiru 120. The tyres were supplied by Jabiru and are Trelleborg brand 4.00 x 4 6ply. Unfortunately, due to the profile of the tyres, they foul on the brake caliper bolts. It appears that suppliers, including Jabiru, are having trouble supplying ribbed tyres. Looking for ideas as to where I can source suitable tyres. THANKS Daryl
  14. vk3awa
    http://www.abc.net.au/news/2015-01-02/person-killed-in-gliding-accident-in-vic-chesney-vale/5997616
  15. vk3awa
    I flew to Corryong yesterday and was lucky enough to be offerred a ride in Dragon Rapide VH-UXZ. I read the history of this aircraft and noted that Sander Veenstra brought the damaged aircraft into Australiaa in 1979. It had several owners before Maurice Rolfe bought it and restored it as a part time project over thirty years. Must say, it was a great opportinity to have a flight in such an aircraft.
  16. vk3awa
    http://www.warrentruss.com/portfolio.php?id=2556
  17. vk3awa
    Government response to aviation review http://www.warrentruss.com/portfolio.php?id=2556
  18. vk3awa
    Maj, I take offense at your suggestion that I am conveniently forgetting all the other failures. Without getting into lengthy discussion I said "current prevalent issues". I did not conveniently discount the other issues as you suggest. From my experience the most "prevalent" problems of recent times have been through bolt failures and valves sticking in the guides. I maybe should have also qualified my comments by saying in standard Jabiru configuration. (airframe/engine/propeller). There are probably thirty or so Jabiru powered aircraft in my area and I'm pretty well attuned to what engine problems have been encountered over the last ten years. I have yet to see one caused by the valve retainer failing, although I know it has happened. I have seen one failure due to flywheel bolt failure when a non-standard prop was fitted. I have tried to provide a non-biased, factual input based on my experience with Jabiru engines. In light of your comment which raised the question my integrity and raised my blood pressure a tad, I have made my final post. In closing, my post was in no way supporting the integrity of Jabiru engines or the factory customer service.
  19. vk3awa
    Just reread my post.....apologies for the typos......but you get the message.
  20. vk3awa
    Yes a stuck valve will hit the piston. (Not one with valve relief)
  21. vk3awa
    All of the issues you have mentioned are correct over the history of the 2200/3300 series of engines. However, some of the problems you have raised may no longer an issue as they have been rectified over time or the affected engines are no longer in service. You quote "larger" valve relief.........not larger but either valve relief machined into the piston crown or not. I have been involved with the Jabiru product since before the intoduction of the 2200/3300 series engine having my first flights in a 1600 powered version. I am an L2 and have ben trained by the Jabiru factory and Wayne Johns in SA on Jabiru engine rebuilds so I have some experience. The current prevalent issues are through bolt failure/crankcase fretting and valves sticking in guides. The piston valve relief might be a "bandaid" fix but I can tell you that I'm a lot happier flying with one of these engines knowing a stuck valve will not cause a catostrophic engine failure. I also read a few posts citing engine overheating problems. This has not been an issue since the introduction of the fine fin series of heads some years back. So, during the evolution of the engine the issues have changed. My feeling is CASA will be targeting the current series of production engines and not ones made ten years ago with some of the problems you have raised in your post.
  22. vk3awa
    The problem of through bolt failure and crankcase fretting go hand in hand.
  23. vk3awa
    Well it is now the 28th.......Any news as to whether I can take a passenger in my aircraft today or not?
  24. vk3awa
    Hey Ian....I think you get it.
  25. vk3awa
    Add to your research.....which generation engine. Hyd/solids lifters/cam/hollow or solid push rods... et cetera The point is, there have been a lot of changes in the "evolution" of Jabiru engines. In my experience the solid lifter engines did not appear to have through bolt failures. The early broad fin heads had cooling issues that could be somewhat managed by the operator. With the introduction of the hydraulic lifter engine came new issues. These issues have been highlighted by Jabirus recent statement.....through bolt failures and valves sticking in valve guides. Now there have been changes along the way of the hydraulic lifter engine .....3 (or more) cam changes, 12 point nuts, larger through bolts, pistons with valve relief to name a few. Have these changes been made as a bandaid treatment or to cure root causes of ongoing problems.....? I don't know I'm asking the question for those that have more knowledge than me.
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