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Yenn

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Everything posted by Yenn

  1. Yenn
    Good to hear you are still with us Phil. Just surviving the hospital is an achievement in the UK
  2. Yenn
    If it was diesel or jet A1 it would not be usable if stored in a galvanised container. The old power kero tractors will run perfectly well and give more power on petrol, plus no stuffing around getting them hot enough.
  3. Yenn
    I would think that there were no coolant pipes in the cockpit. The report states that coolant was coming out of the cowling and dripping onto the panel. It seems to be external to start and running into the cockpit. I wonder if the coolant caused a short in the panel. It would have been better to give a mayday on area frequency, rather than on a CTAF I would think, at least at the very start and then maybe back to CTAF when in the circuit. I was surprised when I gave a mayday years ago and got an immediate response from a nearby chopper asking if he could help. That was on area and if I had used the local CTAF he may not have heard it.
  4. Yenn

    Jab engines

    Yenn replied to Yenn's topic in Engines and Props

    years ago I bought fuel quality clear plastic hose from an aviation supplier in Orange. About two months later I had a fuel leak in the hose going into the carbie on my Thruster. Had to put it down in a paddock and use the gearbox breather hose to continue the journey. Now I would only use USA coastguard certified hose. Thick and rubber, not clear.
  5. Yenn
    LSA manufacturer built is static in design, by which I mean that it must not be altered in any way, or it ceases to be LSA. Amateur built LSA or E LSA is designed by a manufacturer, but built by the owner. It still cannot deviate from the original design. Most RAAus planes are not LSA, but manufacturer or owner built and can be changed after building. The problem is that a lot of people think LSA is the generic term for Ultralights and RAAus reg aircraft. It is not.
  6. Yenn
    Welcome Steve. Like most people I like the old C182. Very stable and capable. I haven't flown one for years, restricted to the Corby Starlet, which is rather different. I also flew with Latrobe Aero club, years ago, I worked for a very short time building one of the chimneys there. Did a lot more flying from Grovedale and Lovely Banks.L
  7. Yenn
    Checking the filter contents may seem like a waste of time, but you will most likely see a sudden increase in metal particles, which is what you are really looking for. Just because you don't see particles, only tells you that so far the wear is not really bad, As soon as you see them you know you have a problem. Relying on visually checking a magnetic drain plug is only the same as opening a filter, except you will not see non ferrous particles.
  8. Yenn

    Jab engines

    Yenn replied to Yenn's topic in Engines and Props

    That new word aptly describes the means of setting the float level. I reckon it is pathetic. I have just put in a smaller main jet, but haven' flown it yet. It runs OK at full throttle on the ground.
  9. Yenn
    Didn't the pilot say there was coolant dripping in the cockpit? Seems funny to have any coolant lines or equipment in the cockpit.
  10. Yenn
    Will need to be transponder equipped.
  11. Yenn
    My wife encourages me to fly, maybe after over 60 years together she likes some time to herself.
  12. Yenn
    If you build without getting involved with DAAA or RAAus you will have to get an inspection by an Authorised Person. They are available, but I reckon they would charge more than going the SAA way would cost. Then when you have built and had inspected and passed, done all the test flying and got a Certificate of Airworthiness, how are you going to maintain your plane. You have to have authorisation to do the maintenance. In the case of an SAAA build, you will do an MPC course ( I think that is its name) that will give you the OK to self inspect and approve for flight. If I was building again I would definitely go the SAAA way, unless it was ultralight acceptable and there was any doubt about your ability to maintain the medical for VH flying.
  13. Yenn
    Having mixture control will not tell you if you are lean or rich, all the control does is allow you to alter it. An EGT will give an indication of how the mixture is working. Full rich you are getting s lot of power and the excess fuel is supposed to be cooling the heads, you will have EGT readings less than maximum, or less than peak as they say. Reduce the fuel slightly and the burn will become more efficient, giving more power and also higher EGT. That is the effect of gases being hotter as they exit the cylinder. Lean some more and you will get to peak EGT. The very hottest that the gases will get and just slightly less than maximum power. As you continue leaning there will be an excess of oxygen in the mix and less fuel to burn, so EGT will drop. Somewhere just lean of peak you will get the most efficient burn. Running rich of peak is OK if you are lazy, or don't understand what you are doing and so long as you are not burning everything up, which is possible. Lycomings run very well way lean for taxying and they will not have so much tendency to misfiring. Run them so lean that they will cut out if you advance the throttle to take off power and you will be safe
  14. Yenn

    Jab engines

    Yenn replied to Yenn's topic in Engines and Props

    I bought a factory zero timed Jab 2200, to replace the Jab 1600 that I put in the Corby years ago. The replacement was also years ago. When I got the engine I also got the Instruction and maintenance manual. Tyhis gives a good run down on the Bing carbie. I had mine reconditioned recently and since then it has been running rich, so I decided to lower the needle in the fuel metering system. Easy job, just remove the top and the piston and the needle needs to be turned 90 degrees and moved to the new groove location. That doesn't work, the needle is free turning and will not disengage from the spring clip. Looking down the piston I see a large screwdriver slot, so I remove the screwed in part. Lo and behold it is holding the needle in place and the needle is noting like all the Bing manual depict. There is only one groove for the spring, not 4. Leith at Jabiru tells me that it has been this way for years, even before my engine was sold to me. I wonder if anyone else has tried to re locate a needle, or did they have the correct info in the engine manual?
  15. Yenn
    What you should be looking for is not altitude but best lift / drag ratio, which is best glide speed. Say for example you are doing 100 kts, engine fails. then pull the stick back to get best lift drag ratio or glide which is say 70 kts. You are probably there already. It is all very well to theorise, but in emergency situations it is best to be able to make a decision quickly, rather than have to make one decision to climb and then another to glide.
  16. Yenn
    Oil testing is common in the USA. What it will do is provide a base to look for changes. That means that if you get an increase in some chemical in the oil, they can suggest what may be causing it. Say for example your Lycoming starts getting increased iron, it would make you suspect worn cam lobes, or increased tin could be bearing wear. It really needs to be used over as many oil changes as possible to spot trends. I don't know what the cost is, nor even if it is done in Australia or it has to be sent somewhere else.
  17. Yenn
    I have found that a piece of fine wire in the inlet to static and fuel vents stops insects. They will not build a mud nest in the opening. I did get insects in the static before I used the fine wire and it was only a pop rivet with the stem knocked out. The wire I use is stainless lockwire.
  18. Yenn
    I have glanced at bob Taits books and thought they were acceptable. I did my study for GA with a correspondence school. Nobody around to study with so no study buddy and I reckon I got a first class education in all that was needed right up to commercial. I never tried RPT. I don't know if "The College of civil Aviation" is still in existence, but you can certainly learn on your own if you have the interest.
  19. Yenn
    G'day Andy, welcome to the forum. It looks as if you have a good grounding. Have you run into John Mc Evoy at Redcliffe, I think he flies skydivers. The best instructor I have come across and he has trained the instructor for Monduran aero club.
  20. Yenn
    G'day Dave and welcome.
  21. Yenn
    What you see here is just normal Australian retail. I seldom buy in my nearest city, Gladstone, because the way I get treated in their shops is just dreadful. I go to Bundy and things are far better. As for aviation materials I long ago gave up trying to buy local. Go straight to the US.
  22. Yenn
    G'day Gary. The thruster can be a fun machine, do you have a plane to fly now?
  23. Yenn
    I used a fly cutter and had no problems. It was a good quality fly cutter, not cheap rubbish and set up in a drill press with the panel securely held perpendicular to the drill. To clean up I used a home made bearing scraper, that is a triangular file with the teeth all ground off, leaving a triangle with 3 sharp corners. Final finish on a scotchbrite wheel. For non circular shapes I have used a nibbler, but they are not so precise in operation.
  24. Yenn
    Bruce asks how do you measure the mixture on a Jabiru. Look at the plugs, or better still add an Exhaust Gas Temperature gauge to the panel.
  25. Yenn
    I remember them somewhere between Salisbury and London, they were used for carrying cars and freight to the continent. The runway ran across the highway and cars had to stop when they took off and landed. Big, ugly but effective.
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