Jump to content
  • Welcome to Recreational Flying!
    A compelling community experience for all aviators
    Intuitive, Social, Engaging...Registration is FREE.
    Register Log in

All Activity

This stream auto-updates     

  1. Past hour
  2. Aviation is no stranger to a few "Fly by Night" operators, wherever you go.. Nev
  3. Re the opening comment from Neel on this link, https://www.smartcompany.com.au/entrepreneurs/influencers-profiles/soar-aviation-neel-khokhani-flight-school/ Yes he was fired, but not for telling the owner in question how to run his business. As he was dismissed he accused the owner of being a racist. The owner answered "I wasn't a racist but I am now". This operation had "shonk" written all over it. The industry has enough challenges without get rich quick parasites fleecing it of resources.
  4. Today
  5. BuzzB

    BuzzB

  6. Yesterday
  7. OT .put your hand on any part of a piston engined plane in flight and you will "feel" the rumbles. Nearly everything flexes too. A LOT of instrument panels are rubber mounted even in the old days makes the instruments last longer and makes an IVSI need a little motor to vibrate it. Nev
  8. Yes, he stood for election. Any member can put their hand up. There is no mechanism for saying "we think he's a bit sus don't accept his nomination". The election spiel is written by the candidate, RAA does not go into the truth of the statement. Even if he did get on the Board, he is still only one of seven. The system is fairer than when Ian (Admin) nominated and certain members conspired to delay his membership, so that it lapsed while nominations were open and Ian was denied the chance to stand. You can read about it on the forum, or PM Admin. This was years ago with RAAus Inc.
  9. Reckon they are 1/2 ali tube ,bent into a right angle (slow radius) Come out the back of the duct and end sits just above coils and pump, just flocked in.
  10. what diameter of blast tube jetjr? and rigid or flexible? Coming from the existing duct or from another opening? I don't have any blast tubes at all, but I have put in shields to intercept radiant heat from getting to the coils.
  11. Yes, CAE recommended blast tubes to coils and fuel pump I recall they had problems getting fuel pressure correct to limits and once springs correct there was some incidents of pump plunger binding - probably linked to heat Efforts spent on ensuring max gravity flow , see 60lpm ?? required without any pumps (std Jabiru gets around 30lpm) and they had special jigs to realign fuel pump on assembly. The extra blast tube does make getting duct on and off tricky
  12. Ok Litespeed, we'll agree to disagree. Back to the original topic before I get moderated, cheers
  13. We're there now with compression ignition petrol; take a look at the new Mazda SKYACTIV-X engine range: https://www.mazda.com/en/innovation/technology/skyactiv/ While not compression ignition, for some years the Nissan Patrol petrol model's total cost of ownership has been less than the diesel, and you gate back the benefits of lower noise level, and cleaner hands after refuelling. My prediction is the diesel will be phased out in the medium term in Australia due to the difficulty of getting clean fuel (needed to comply with the latest emission levels. In the 4x4/SUV market several shifts have occurred. Lower taxed off-road diesel is no longer available for them The much lower fuel consumption of diesels than petrol has gone with the spectacular reductions in petrol consumption. For the average person who pays someone to service their cars, Diesel Particulate Filter replacement can cost more than the car's value. I was quoted $3,800.00 last year on DPF replacement for a Subaru Outback, and even replacing it myself cost around $1,500.00
  14. There's a familiar face in the July 2017 RAAus directors election spiel edition of the Sport Pilot magazine. It, along with a number of other items and events, again raises the question of the level of RAAus involvement in this debacle.
  15. I hope he packed a life vest. He should be used to it by now- his piloting not just the aircraft. But something tells me it is a complete surprise to him.
  16. The Allied forces tanks nearly always used petrol engines, because in WW2, the Americans decreed that petrol would be the primary fuel of the Armed Forces. It was much easier to have one primary fuel, as having multiple fuels would possibly result in the wrong fuel, at the wrong place, at the wrong time. In addition, there was a need for high power levels, and that only came from petrol engines. Diesels of the day were relatively low powered. But the British tried diesels in tanks during WW2, because of diesel engines better economy, resulting in more range before refuelling was needed. AEC and Leyland diesels were used in some of the British WW2 tanks. The big supply of U.S. aircraft radial engines, meant they were slotted into tanks, due to their ready availability, and high power output. Thus the General Grant (M3) tank got the Wright Cyclone R975 - which was also built by Continental during the War, due to its ability to churn out huge numbers of engines. But the tank builders were always desperate for more engines and more power - so Ford built a 500HP tank engine - the Ford GAA, a DOHC, 32 valve, all-aluminium V8 that was designed and built purely for tank use. Then Chrysler designed and built the amazing 30 cylinder multibank A57 engine - essentially, 5 x flathead 6 cyl Chrysler industrial petrol engines, buttoned together on a common crankshaft. This engines reliability was below par, and it was a nightmare to work on. But the Sherman (M4) was the main battle tank of WW2 - and it was powered by a range of engines, depending on where and when it was produced, and for what specific tank order. The main Sherman engine was the R975 Continental radial, but it was also supplied with 2 x inline 6 cyl GM 2 stroke diesels, coupled side by side - the Ford GAA - the A57 multibank - and interestingly, a diesel radial, which was a Wright R-1820 converted to diesel by Caterpillar, and called either an RD-1820 or the D-200A. Not many RD-1820's were produced, only a few hundred. Not surprisingly, Australia ordered the largest number of GM Diesel-powered Shermans. There were two main reasons for this - One, the substantially extended range of the GM-diesel-powered Sherman was regarded of utmost importance in Australian Defence Force leaders eyes, as fuel supplies could be very few and far between in Australia, and in many areas where the Australians were operating. Good fuel range often meant the difference between a successful mission, and a failed one where tanks ran out of fuel - as Rommel found to his dismay, when his tank forces ran out of fuel in the Middle East, because the Germans had underestimated the fuel requirements of the German tank forces. But the second reason the Australians ordered diesel Shermans was because of watching the bitter early experience of the petrol powered Shermans in the Middle East and Europe, of "lighting up" in horrendous fashion, when hit with powerful German shells. The petrol tanks were a major disadvantage in fighting. Not for nothing were the Shermans nicknamed "Ronsons"(after the WW2 cigarette lighter), because of the fact they caught fire and burnt crews to death, in large numbers. The Germans simply adapted their 88mm AA guns to fire horizontally and used them as an anti-tank gun with devastating effect. But the Shermans only overcame German tanks purely because of sheer numbers, plus the Allied air forces doing a good job of protecting tanks in battle - and the Allies also making the German 88mm guns a primary target at all times.
  17. In normal set ups those things are known as blast tubes With a uniformly pressured area (large volume) you can peel off a bit of air anywhere for a good cause Nev
  18. this aircraft seems to have problems stopping? Hawkesbury River over run 2020 Inverell over run 2018
  19. I am hard enough. Harden up?🤣 I didn't squeal when the actual historical truth was presented. To choose which facts or history you believe is not relevant, reality does not change just because you do not like it. If you did not agree with anything I said- then discuss. Don't have a hissy fit and just say its all lefty stuff we don't want to hear. I did not say the right wingers are all bad, all employers were bad nor all of government is bad. Intelligent capitalism can be a very good thing. It am not shoving it down anyone's throat. I certainly did not say they eat the young nor that the left never gets it wrong. Guess I was a bit too slow to jump the gun, but I like to think then aim.
  20. I think what they are really saying is this..... "We have learnt from legacy players in aviation to charge like a wounded bull even if our numbers made, costs and actual engineering prowess indicate otherwise. We have little wish to be a fair price as we own the market bar that pesky Jabiru. We design our products for maximum return via any parts prices, almost complete replacement of the engine in a rebuild cost and parts wise. We are happy to screw you at all stages of ownership and have worked the market to ensure you will happily just buy another engine at even bigger prices when things get close to a big bill. You can trust our research and development guys are developing safer sounding ways to extract more profit from your wallet pain"
  21. As my Dad used to say....take a teaspoon of cement and harden the .... up! Shit happens ..we don't need lefty guys like you preaching how bad our capitalist society is. I applaud you for the work you are obviously doing. It doesn't mean people like me aren't concerned about the failures of our politicians and society in general. We just don't want it shoved down our throat that if you are right wing and an employer you are the blame for all the country's problems. PS. you're preaching to the wrong person , farmers are only second to mining with deaths in the work environment. After the fires and the drought we will probably take out the top spot. I'm sure after losing all their life's work a few will be tipped over the edge.
  22. You can balance any engine to take away the majority of harmonics and vibration regardless to the number of cylinders. You are balancing the rotating parts not accounting for the power produced and those other forces produced by combustion. If it didnt work or was valuable it would be standard practice for 80% of all engines and certainly 100% of any high performance engine My engine is being rebuilt by a accredited Rotax maintainer who by the way has far more experience at a machining and technical level that is way beyond most "engine builders" The crank is welded purely as a safety precaution of the extra horsepower as rotax in their unfathomable reasoning decided to use a press together crankshaft instead of making a normally machined/ground crankshaft. This welding has been done by most likely the best welder in Australia who does this day in and day out. This is a well known practice for this style of crankshaft all over the world and its not specific to Rotax. many high performance motor bike engines have this done. If you ever have a prop strike in a Rotax there is a special gauge that you must use to check that the crank journals have not moved If Rotax didnt want their engines being rebuilt then why make available all the parts necessary to do it. If that was the case only specific Rotax people would have access to the parts
  23. I think if you re read what you wrote, you gave a very distinct impression. Unfortunately some are fooled easier than others. In all my career I never, ever discriminated in my time, tuition, scientific work or health care work in extreme risk environments- as in putting your lifes work and actual life on the line daily for 15 years. Everyone deserved and got the same level of attention and care/knowledge and or advocacy irrespective of their or parents bank balance or views. And never received a cent for much of it. My last paid Job was a real cracker- when the cops were called, they would often say- Mate "what the fark do you expect us to do, I have a taser, gun and hand cuffs. I am not going in that house without using at least 2" Then I would be going in and no weapons. Just a compassionate mind and decades of experience in conflict resolution/mental health/developmental disability and real time at the university of hard knocks. I never had a vest , must be because they didn't have a pink one maybe? My last workplace of 7 years saw me watch 75 staff either leave from stress, or assaults some life changing. Yep, us lefty pinko nancy boys just suck off the public tit and get scared by a spider. Wouldn't know a hard days work and risk unless it bit em on the bum Gee Butch, must be hard slaving away, so the rest of the world can enjoy life and drink from your swill bucket. And all those bloody employees insisting on rights like fairness, a safe work environment and a million other "lefty pinko commie socialist clap trap" things. It must make your skin crackle.
  24. Bruce you seem to have had success at the"black art". Well done. That's a blurry big hole in your cooling duct- even bigger than the standard one. It always amazed me that Jabiru would divert any of that precious cooling air. I closed mine off to ensure all the air coming in went past the fins and ran separate scat hoses to cool the coils. I've noticed on the Jab/CAMit forum that some people run separate air ducts to cool their fuel pumps,
  1. Load more activity
×
×
  • Create New...