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F10

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Everything posted by F10

  1. I guess if you started on a twin from scratch, knew nothing else, maybe….but yes, twins are expensive if money is a concern. I flew a King Air once in my SA Air Force days, sitting upfront as a pax, I thought the controls had jammed, the ailerons felt so heavy….but I was used to a Harvard which has pretty light controls in fact. As for performance, we’ll again, if money is no concern, a P51 Mustang or F4U Corsair will outperform most twins….yes, for us “I now fly just for fun” people, the “thing” that creates lift under our aircraft wings, is not intricate airflow, causing changing flow velocities, with the subsequent pressure changes….but buckets of cold hard cash….and lots of it!🙃I would suggest, train on a single, then if you must, buy a Cherokee 6 or a Cessna 206, light twin size, with half the cost and complexity.
  2. Simple, most of the Jewish settlements were in areas that had been agreed to by Arafat and Netanyahu in that original dual state agreement. But when Jews started to "occupy" these agreed to areas, they were ctiticized. Now, I think its more about survival. Clearly areas occupied by the Jewish people will not be used for uguided rocket attacks or incendary balloons. Nice neighuours! Still, funny how Tel Aviv airport isn't full of desperate people wanting to leave, as we see in Kabul, seems people aren't too keen to live in an "Islamic Sharia Law utopia".
  3. F10

    Gazelle RPM

    Just on 5000. So probably pitch set a bit coarse, but then thats good for cruise. As I said, take off performance is as expected, so no problems with this. The only concern is I guess, going fulk throttke on take off, could be a overboost, if RPM is low?
  4. I think Gazelles would be quite happy at a MAUW of around 550kg. Two blokes around 90kg and you really can’t take much fuel at a MAUW of 520…(basic is around 320). There is an AD out to have another carry through strut bolted on, below the original, after that incident. Apart from an aileron failure, (which had significant contributing factors) the old Gazelles have a pretty good record I think. Yes underwing camber is interesting, I must read up on it. Most positively cambered aerofoils have a nose down (leading edge down) pitching moment at low angles of attack. At high AoA, it changes to nose up, with the CP moving forward on the cord line. At some point, there is no pitching moment on the wing. That CP position is referred to as the “aerodynamic centre”, upon which the tail plane stability will be designed I understand. Interesting stuff aerodynamics!
  5. F10

    Gazelle RPM

    My Gazelle has a 3 blade Bolly on it, maybe this drops the max RPM? Performance seems good, acceleration on take off pretty brisk and solo, climbs out at around 600-700ft/min. Cruise at 4800 RPM is 70KIAS. Also pretty ballpark. Anyone else have a 3 blade Bolly? Flew to Tyabb from Yarram recently with a mate on board, retired Esso A139 driver. He really enjoyed it. I got normal fuel burn figures as per the flight manual. Book says 12.7 l/hr at 4800 RPM. I flight planned at 13 and it seemed accurate, but that’s trying to see fuel levels on the sides of those tanks….they really needed to Put in a small clear tube level on the side of the tanks!
  6. I largely agree, but I think one important factor you left out, I remember when all the Taiwanese made tools were cheap….and junk. It took a few years but now they are as good as the best. I don’t like Chinas government and would happily support its removal or democratisation, but one thing is some Chinese goods are just that, good. I’ve owned a small Chinese made CFMoto little commuter motorcycle. It’s done around 25 000 Kms trouble free and still looks brand new at 5 years old. I bought my wife a Haval H2. SUV. At the time, nothing came even close spec wise, for the price. Took a punt. Had it for four years and it’s been fantastic we love trips in it. Chinese junk….not really anymore. It’s an interesting situation.
  7. Your passport will expire on this trip!
  8. Reference the “global warming” (yeah right) undies saga....that was SOP for any young Alo III chopper pilot...if you have to carry out a precautionary landing, due to a fuel low pressure light, fly until you find a farmhouse with the sexiest undies on the line...and land there! Any young female PAX approaching your aircraft in a skirt....pull 0.2 collective pitch setting....rotor wash will lift the skirt....oh dear, weren’t the pre PC days a lot of laughs! I miss them!
  9. Love the Monogram model box top pic! Oh boy, did that bring back memories! I loved that kit as a kid and the Monogram Cessna 180 also. Civil light aircraft kits were quite rare in those days.
  10. I think radio calls are really important. Going into Tyabb on Monday (I avoid weekends...too busy by half!) about two weeks ago, listening to radio calls as I flew in for an overhead join, helped a lot with building up a mental picture of traffic. I joined mid downwind, number two to a yellow Gazelle, who I was able to spot because of his radio calls. I don’t have a transponder unfortunately, have just installed a GPS Garmin 495, and I don’t have an i pad, I prefer my paper map with tracks and distance markers drawn in, my A5 clipboard with my log card clipped on it....old school habits I’m afraid. I like to think my eyes are mostly outside.
  11. Nice! Kept hoping she would hit a thermal and zip up 500 ft...but that would probably frightened the pilot so much he might have stopped pedalling! Wonder what advantage if any, the single prop blade has?
  12. Hmmm, mess with thunderstorms and all bets are off. Going into a strip like that, in those conditions, pure Russian roulette. Bytheway, can you build a Zenith with a conventional stick position, or is a central stick the only option?
  13. Nice! Looks like a Tripacer on steroids. I like nose wheels, I have enough tail dragger time, to own a few of those T shirts... these days I like the relaxed taxi and seeing where I’m going!
  14. Yes, a lady engineer solved Merlin -ve “g” fuel starvation problem, short term. A plate in the float bowl, with a small hole in it held enough fuel near the jet diffuser, with short term negative g, to prevent a cut, but hole was big enough to not impede normal ops fuel delivery, simple but clever! Later carbs were floatless, or had a type of injection system to deliver fuel to the jets I think. The Bings on my Rotax, have a throttle butterfly, ahead of the moving piston and tapered needle. With choke on, throttle fully closed, the butterfly is fully closed. This exposes very small drilling’s only just past the butterfly plate, which are part of the choke circuit, because downstream of the fully closed butterfly plate, a suction exists (manifold pressure being lower than ambient, especially at idle) over these drilling’s, which suck up fuel, to enrich the mixture for start. If you crack the throttle slightly, the butterfly plate actually covers these holes, or moves past them, putting them in a pre butterfly plate high pressure area, so fuel is not sucked up, engine struggles to start. Normal running. As I understand it, the throttle butterfly valve causes more air to come into the Venturi throat, this sucks up the piston, withdrawing the tapered needle from the jet orifice, leading to more fuel and air going into the induction manifold. The bottom of the piston forms the Venturi, creating a suction, constantly drawing fuel up past the needle taper, for higher power running. The Bings are cool carries, simple really yet reliable. I like the fact the Rotax config, gets the carb bodies nicely warmed up being so far back on the engine. That is why they rarely suffer carb icing. They are a lot like the old SU carbs on Brit sports cars. Wow, I did ramble on!
  15. Will try putting down a tarp on the floor, that sounds interesting, and will close off engine better. Heating not an option, no power unless I can try a solar panel but that will start to get complicated, we have many cloudy days! Trouble is, will an open engine dry off faster? We’ve also had a lot more winter rain here at Yarram then in the past few years....very wet, but as I said, will definitely run the engine once a week, roll on spring!
  16. My rental hanger has a dirt floor, with carpets over it, recently noticed a lot of condensation on the engine, after a old night, which was alarming! I keep the aircraft under cloth covers. Recently put a blue plastic tarp over it, in winter only, due to dripping condensation from the hangar roof🤨...in summer it’s all good and does give great rain and wind protection of course. But, lots of different opinions on the net...some say heaters good..but others insist they make corrosion worse...I agree with, “run the engine at least once a week”....that means fly it, not a short run, that’s also bad...I close up the cowling, should I bung the exhausts? Tough one.....
  17. Dog loose on the airfield....bad idea! The high frequency buzz of some propellers will casedogs to try to bite the spinning prop, I had been told this by an old crusty heli QFI, who said watch out for landing at an LZ and dogs are around, some will try to jump up and bite the buzzing tail rotor. Takes a courageous dog, with all that noise...but one day, landing my “flying Jeep” Alo III , I noticed this excited Staffie terrier running around, I said to the flight engineer, “watch the dog”, as we were in the hover over the LZ, he was leaning out the door checking the TR and suddenly shouted, “go up three”! The dog had run up and leapt up to have a go at the tail rotor...missing it by not much....only time it had ever happened to me, but it only takes one to ruin your day! Besides, if dogs were around my aircraft, I don’t want to be replacing rusty brake discs or wheel bearings!
  18. Yeah interesting this, I got rid of the wheel spats on my Gazelle, two rear ones were already off and gone walkabout when I bought the aircraft, only nose had it. It to me it’s like the three Musketeers..all or nothing! Looks bit like a Tripacer, one of those aircraft that actually looks better without spats in my view. So, question is, what is better, losing 3 kg weight, or the drag? Weight loss will reduce drag very slightly, but to me, at speeds below 100 kts, drag becomes less of an issue, exponentially. Remember, twice the speed: equals four times the drag, four times the lift and control effectively four times better. All those vary as the square of the IAS, simply put.
  19. You hear what you want to hear...he’s basically saying medical doctors could look into adapting the use of UV light or disinfectant in some sort of medical modified application, this was in dark days when no one knew much....but I’m not arguing, if you hate Trump, nothing will change that I guess. Just funny how as time goes on, a lot of what he said is proving correct, like his promise about having a vaccine within a year for example...but I’ll let sleepy Joe’s performance show how good as a President, Trump was. I will watch with interest.
  20. I don’t think he said that, he did say he suggested why not try hydroxychloroquine, it MAY help, but this was greeted with foaming mouth hysteria by the media, I clearly recall one CNN propaganda merchant saying “that stuff will kill you”, funny, I took it for many years as an anti malaria drug....and you really think Biden has been a better President....??
  21. You mean like he was totally wrong when he said this virus originated in China and it originated in a lab....or building a border wall was a good idea, going well on the border with Mexico is it? 😁
  22. Avgas and AVTUR. No Mogas unfortunately.
  23. Yeah but I’ll let Biden’s “success” speak for itself. It already is. Funny how Trump has been proved right in every way about the Covid orChinese virus origins, how the news about him tear gassing “protestors” at St Johns church for a photo shoot has been proved to be totally wrong...or fake, how Harris the VP, who was so anti his border security policy....is now suddenly a big fan....and so it will go on. As for character building...kinda like Labor was supposed to walk the last election??😁
  24. On the Supreme Court maybe, I don’t think in the different states. Certainly Democrat states don’t have just Republican judges, if any?
  25. Yes, never said he was a nice person, would not be a personal friend of mine. But his record stands. The ONLY Western leader to stand up to China, called the Paris Agreement for what it is, a blatant protection racket for China, calling them a “developing” economy and putting the USA at a huge economic disadvantage. As for proof of voter fraud, there was a lot, but what judge would ever have found for Trump, with the massive leftist bias of the mainstream media? I just can’t understand why a guy hiding in a basement, won an election whilst his opponent pulled record crowds. That just defies honest logic. But, sleepy Joe is President and I will watch the dumpster fire with interest. So far, it’s starting to burn quite well. My prediction that he will prove to be the most unpopular President in US history, seems pretty on track.
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