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Markdun

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About Markdun

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    Well-known member
  • Birthday 11/10/1955

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  • Aircraft
    Cygnet
  • Location
    Australia
  • Country
    Australia

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  1. Glen, agree. Potential higher currents (& reduced voltage drops) just more likely to show up wiring faults. But wouldn’t an isolation relay just do two things: (a) enable the pilot to isolate the battery after the blue smoke emerges (a good thing to be able to do); and (b) prevent a runaway burn out, short when the plane is shut down, ie. no live wires going through the firewall or elsewhere for rodents to chew through etc (also good). I don’t get how they would stop, say, a VR or stator windings in the alternator catching alight because a lithium battery has a lower resistance than a l
  2. Bruce, that’s all fine, but do you have unfused wires from the battery going through your firewall; is there a fuse in one of the wires (AC) from the alternator to the VR, or in the wire from your VR to your switch to turn charging off? It’s not whether it works when everything is working but what happens when there is a failure. I’m cautious because I’ve had an inflight ‘blue smoke’ cockpit in a Jab powered plane I was delivering caused by the standard VR outputting to much current caused by a failing lead acid anchor battery, the VR allowing the bus voltage to exceed 15.5V, and the fool in
  3. My guess that instead of blaming the battery, the more likely culprit is the absence of adequate circuit protection in many Jabiru powered aircraft, including factory made. How many have unfused wire cables from the battery going through the firewall to the circuit breakers and master switch on the panel? No battery fuse! How many have no fuse or circuit breaker in the AC circuit from the alternator to the voltage regulator? And how many installations have yet to ditch the plastic Voltage regulator connector which has a pretty consistent burn/melt rate caused by corrosion and poorly fitted
  4. Me too. Because that is exactly what i did when i first used the ADSB....I called Canberra Approach (& it’s not like they are busy with only a handful of flights all day) and asked whether they could see me on ADSB at 5000’asl. And yes the SE2 is low power but I’m all 25nm from YCBR, maybe further from wherever they have their base station. But that’s irrelevant, I was told they don’t look. Area controllers seem to use every bit info they can get,including Ozrunways GSM phone positions, for example, when chasing people up for Sartime log offs (that is not from my own experience).
  5. OK. I’m fine with ADSB. I have a declaration though. My brother, now semi-retired, was Australia’s (& one of the world’s) top engineer on ADSB. He has been awarded the Hargrave Award from the Royal Aero Society for his work. He has recently been working with the SpaceX guys getting global coverage by sticking ADSB base stations on their satellites. Some years ago Airservices proposed that ADSB transponders be fitted to all aircraft, including RAA, for free, fully funded by the fuel savings of RPT aircraft. This was vigorously opposed by RAA and others because of fears of the govmt t
  6. I’m told by experts that the GPS position and the ADSB out are working if the little leds are not red. The WIFI connection for ADSB ‘in’ is another matter. The point, i think, of the SkyEcho is more to make you reliably conspicuous to the heavies than to provide you with reliable info, afterall you are in Class G or E if you have just the SkyEcho and responsibility to avoid conflict is based on the unreliable mark I eyeball and neurons and uncertified brain software. Still its nice with the SE to notice the odd aeroplane in the sky nearby.
  7. Like Kiwi, I have two Raa planes; one has a mode C ssr transponder, the other the ADSB on/out SkyEcho which goes from one aircraft to another. So I voted yes and no. I got the SkyEcho mainly to maintain better separation from military helicopters which often overly my airstrip at less than a 1000’agl, which is disconcerting when landing and taking off. A few things with the SkyEcho. Its low power, so the ADSB satellites don’t pick you up, & ATC (at least at Canberra) don’t see you. If your wives want to track you via Flightradar, then its hit or miss depending on whether some
  8. Nev, I’m well aware of that. But ownership and registration (or safety) are totally different things. I once contemplated buying an ex RAN Vampire jet for a few thousand dollars, complete with spare engine cans etc. Probably some dry rot in the wood. However, the RAN had lost the aircraft log books.... nothing on total hours etc. it would have required disassembling and reassembling the wings etc to even get close to being approved for registration. ‘Static display’ only.
  9. A couple of legal issues raised. First, false advertising is not fraud. Secondly all photos are old, it’s just how old. But that aside there is nothing legally wrong with using an old photo. Most advertising is what is called in Iaw as an ‘invitation to treat’ and not an ‘offer to sell’. For example a pawn shop had a pistol in its window with a £10 price tag attached. The owner was charged with the offence of offering a hand gun for sale. He was acquitted as the court found the display of the gun with the price tag attached was not offering the gun for sale, but an invitation to people t
  10. Ummm. The worst I’ve been in was on tow in a Schleicher K6 behind a supercub in NZ. At about 1500agl the tow disappeared from view below my nose, as I went to bung off I was then flung downwards, and my hands were ripped off the controls (I didn’t get a chance to release the tow) and flung upwards with the negative G (along with several years of dust and crap) just as the tug reappeared, rising rapidly from downunder to go upover, and which I quickly followed. Oh, the joys of rotor. But when i bunged off a very short time later I was in ultra smooth wave giving about a 1kt verti
  11. Octave, I know this is not your piece, but it’s this sort of incorrect logic that really gets my goat....particularly as it purports to be supporting the argument to get vaccinated, when actually it doesn’t, it undermines it. My father used to ask us kids whether white horses ate more than brown horses in Australia. We of course dutifully always said, horses all eat the same....their colour doesn’t matter’. And he would always respond with the fact that, in Australia, brown horses eat substantially more than white horses, because there are substantially more brown horses in the country.
  12. Jack, so it seems I’m not the only person with a perfectly good smartphone that’s more than 5 years old! I’d like to know why the reverse onus of proof, ie. why isn’t it up to someone enforcing the regulations to prove you are not vaccinated? If it’s good enough for murder, rape etc that the onus is on prosecution, why not for breaching health regs? Isn’t this one of those freedoms, innocent till proven guilty?
  13. Jack, so it seems I’m not the only person with a perfectly good smartphone that’s more than 5 years old! I’d like to know why the reverse onus of proof, ie. why isn’t it up to someone enforcing the regulations to prove you are not vaccinated? If it’s good enough for murder, rape etc that the onus is on prosecution, why not for breaching health regs? Isn’t this one of those freedoms, innocent till proven guilty?
  14. Jack, so it seems I’m not the only person with a perfectly good smartphone that’s more than 5 years old! I’d like to know why the reverse onus of proof, ie. why isn’t it up to someone enforcing the regulations to prove you are not vaccinated? If it’s good enough for murder, rape etc that the onus is on prosecution, why not for breaching health regs? Isn’t this one of those freedoms, innocent till proven guilty?
  15. Bull, a couple of points about the ‘facts’. Yes, vaccinated people still get infected and pass the disease on....but much less (around 50%) than vaccinated. Yes, vaccinated people also get sick and die from Covid, but a great deal less than unvaccinated....around ten times less (this is the 90% efficacy of the vaccine. And yes, if vaccinated people behaviour changes significantly they can spread the disease more than say unvaccinated person who stays isolated, wear masks etc. so on this point only you are mostly correct. On your claim of a 1% death rate you are just wrong....where doe
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