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Methusala

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Posts posted by Methusala

  1. HARS is a fabulous museum. The Southern Cross replica must be all but completed by now. The place is staffed mainly by enthusiastic volunteers who, going by my experience, are as generous with time and knowledge as you'd like. Having such a comprehensive collection within reach of most on the Eastern seaboard is a winner.

    I think that the siting of the original Southern Cross in a somewhat distant and uninspiring building kilometers from either the domestic and international terminals is disgraceful and I started a thread on the topic here some years ago. Lindberg acknowledged that the trans-Pacific crossing by Kingsford-Smith et al was a greater feat than his Atlantic crossing. The Spirit holds pride of place in the Smithsonian in Washington whilst the old bus is existing, Cinderella like, in a shabby warehouse. Shame!

    • Like 1
    • Agree 4
  2. Certainly, crankshaft overhaul is a particularly specialised and skillful task. Checking it for wear within tolerance not quite so complex. I bought a new crankshaft when considering replacement due to failure. Even so, replacement of old with new part is not a watchmakers skill. We are still debating private operations vs for hire/reward. I think there is a world of difference. Who really wants to be an instructor with so many students trying to kill you?

    Ps: Not many LSA's with R-582's to my knowledge, I could be wrong!

  3. Thread drift has taken this far away from its origins. Recreational flying was intended to allow operators to assess their risk and act accordingly. My posts have attempted to argue that your decisions are dependent on the operational circumstances. Eg. Nev argues that taking off with high obstructions in your flightpath mandate a more conservative rule than the alternative. Are you going to risk tiger country? Is your aircraft likely to survive outlanding in a paddock? We are all involved in a pastime that contains some element of risk. It's up to you as pic to make a decision. Don't think that the govt is acting with your best interests in mind. Overhaul costs will vary according to what you wish to replace and your assessment of engineering probability. Do you want to do the work yourself - I know that it can be done successfully with care and underpinning skills..

  4. This AD also mandates the overhaul periods for engines engaged in charter operations reflecting CASA policy related to the aircraft engaged in fare-paying passenger operations.

    ie. No mention of manufacturer's TTIS  for aircraft engaged in private ops. that I can make out.

  5. Requirements for operating piston engines in aircraft engaged in private operations are detailed in - AD/ENG/4 Amdt 11 - Piston Engine Continuing Airworthiness Requirements.

    There is no mention of requirement to observe manufacturer's time expiry limits.

    • Informative 1
  6. Our Drifter has a hatch on the forward top surface of the pod. This is held in place with a pair of black plastic Dzus-type fasteners. One went AWOL in rough conditions the other day. Any ideas where a replacement can be obtained? Don

  7. The Sapphire that I saw was powered by a 2 cylinder Continental . It came from a generator set that were once as common as... in Vietnam. This one was found on a tip , I think around Bendigo many years back. It only produced about 30hp and was noisy as the exhaust directed onto the prop. Magneto ignition and 2 spark setup.The old bloke owner was very proud of it and had flown to Natfly , Narromine from central Vic. Gob knows where it be now!

    • Agree 1
  8. 49 minutes ago, Yenn said:

    The caged little end bearing had given way, although we could not hear it.

    Caged bearings are a big no-no! As someone said, "Cageless means more bearing material and no plastic." Splitting the case is not a big deal but requires special tools to service the x-shaft. Can't inspect the main bearings or the big ends without splitting the case. With the new seals in the bluehead coolant leaks from the seals are rare. I used the exhaust manifold to align the 2 barrels. So far, no exhaust leaks unlike before re-build.

  9. 35 minutes ago, Yenn said:

    Methusela have you ever done an engine overhaul on a Rotax.

    G'day Yenn. Answer, yes. I bought a blue head and was told the big end was shot on one cylinder. Imported a new #99 crank from CPS THEN split the case. Found that the crank was in great shape but the needle rollers had deteriorated in one piston. Got new piston, pin and bearings from Floods and re-assembled it. That was 3 years and 120hrs ago. I fly in the Lake George area and never trust my engine over unlandeable country. The process to reassemble the engine was relatively easy. The previous grey-head had done over 750 hrs and was still pulling 6,300 with a Brolga 3-blade at 16deg pitch. To each his own in this form of aviation. I didn't touch the x-shaft/ water, rotary valve. Mix my own fuel/oil.

    • Like 1
  10. There are many descriptions either in written form or video showing dissassembly, inspection and reassembly of 582's. If taken carefully it is not beyond the ability of the average bloke to manage. Engines are not required to comply with manufacturer's (often self-seeking)  guidelines. Being conservative doesn't mandate extremes of caution. WE manage our approach to risk.

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