Jaba-who

I'm with Yenn. It sounds like you have to exclude problems in the common parts of the system and the only things that are common are the cylinder. So you gotta start at the cylinder. The two plugs could be functionally OK but can be directly affected by the gas in the cylinder - fouling etc. so clean or change the plugs. The plugs could both be defective - good chance they are from the same batch if they were installed at same time from a stock supply. So change the plugs. Hard to believe you would get similar failures on similar parts of two independent systems beyond that. ( and they seem to have been excluded anyway)

While not wanting to get involved in elder bashing etc but.....for the education of the assembled masses. One track is correct. The elderly are significantly over represented in the pedestrian accident statistics both in fatalities and non-fatal injuries. The next nearest group are about half in incidence - that's the drunk ( or drugged ) young adults. Then comes young children and lastly adults over age 30 but less than 70 years of age.

I suspect its like many profession "shortages". There's a glut - so lots of people can't get a job so they move on to something or somewhere else. The number of qualified is the same but the available pool decreases and then there's a "shortage". Then people hear of the shortage and encourage people to train - but the training time is always part of a lag time. The those who went off and became accountants, hotel managers or firemen hear about the shortage and race off and take the new flying jobs and suddenly that "shortage" is a glut again when the training guys get out of the flying schools. And yep, there are jobs in the sticks but the family man with kids in school and wife who works can't go off to do them. There are geographic problems in all professions.

That would probably work. I recall my original bing carby on the jab had the foam type float. Later ones have a hollow plastic type. But it was coated with a layer of some sort of paint or something that presumably kept the fuel out of the air cells. you'd probably want to coat it with something - maybe epoxy or epoxy paint. My original floating balls were not sealed and they lasted about a month or so and they absorbed the petrol and just sank. I found the uncoloured ones worked well but were virtually invisible in the fuel. I found fluoro yellow was equally invisible in AvGas. I run exclusivley on AvGas which is 100Low Lead formulation its coloured blue-green. I would guess what colour works best will depend on the colour of whatever fuel you use. I tried different fluoro paints but they had all sorts of effects on the epoxy. Making it not cure etc. I would guess if you sand down some carby float foam to little balls and then paint it then seal with epoxy they would probably work. I don't know why I didn't try foam myself instead of having to make the Q Cell balls. Target fixation I guess.

Hi Phil. Sorry but I had to make mine because I couldn't find any for sale. Hand made ( after much trial and error. Basically epoxy with Q cells and flouro orange paint mixed in. But a bit complex because I found I needed to seal it with straight resin else the fuel gradually seeped in and they sank. But with the outside seal layer they were not buoyant enough. So I made hollow versions. Final ones have been successful for a couple of years now.

Well as promised I did the trials that Jabiru suggested - covered the NACA intake up with a piece of cardboard but cut a 2 1/4 inch hole in it. Unfortunately the weather was not kind to me. Blowing very gusty 15 to 20 knots with lots of turbulence - and I was unable to keep it flying straight and level for more than a few seconds before I was either going up or down rapidly. Took lots of shots of the Dynon so have been able to collate a lot of figures but I don't think they are very helpful because of a few points. 1. I see that at the same RPM but different flight profiles - Descending, straight and level or climbing there is a good 10 degrees between each with descents dropping EGT and climbing raising it. 2. Seems to be variable outcome. The narrow duct seems to pull the spread together some of the time. 3. I don't see any remarkable temperature change. I'm going to spend a bit more time with the numbers - put all the Straight and levels onto a spreadsheet. probably do the same with the climbing and descending. But the biggest and best change came by tilting the carby. Basically my 3 and 5 cylinders were running hot in the climb (CHTs up to about 175 -180 degress and EGTs at various times running in 700 - 740 degress C.) ) but settled down when I levelled out. Anyway - tilted carby top toward the cool side and have cured the temps. No rise in CHT to above the normal running temps ( about 150 CHT) small rise in the opposite side but they were already pretty low temps and have remained within acceptable levels. So maybe I'm just going to leave it at that. But I might do is wait for a smooth day and try the small hole NACA again.

Well you may be right, but the current info does throw some suspicion on it. That pdf alluded to earlier says they did lots of pressure readings and found that any positive pressure made a negative difference. It was in a Europa and I dont recall reading whether they had a jab (or any other) mixer box or if they did whether it had a pressure relief flap.(They did say they initially cured the problem by completely removing tubing and having a 4 sq. inch hole straight into the carby throat. But Jabiru are now saying that using in intake attached to the NACA scoop is made better by removing it and attaching it to a small circular flush hole. No statement as to why, just that it does. I guess we can speculate on what might change but the obvious is that the ram pressure will change (easily explainable) and its reasonable to suggest that if that's the cause of the problems then the pressure relief flap was not enough to drop the pressure. The presence of the flap relief might negate some of the pressure rise of the NACA system but maybe only does to certain extent and the change of the intake tubing may still be enough to drop the pressure to a more favourable level. I guess all will be revealed on the weekend!!

Hangar space is variable depending on events around the place. At present I think there's some. I'll be up there this Sunday. Drop in. First hangar on left as you turn into the road between hangars that parallels the runway.

Unfortunately no. I used to have it at the Cairns airport for years. Rented a spot in a hangar with a mate who had an EC120 helicopter. But he sold his hangar to Nautilus Helicopters when the airport owners started screwing us all with logarithmic cost increases. There's very few private aircraft left on the field now. I keep it up at Atherton (about an hours drive south west). Farri lives south of Cairns about 45 minutes drive south at Deeral. (Well he used to. I think he's still there. I used to fly my old R22 into his strip quite a lot. ) Sharing an intake there sounds like it might cause trouble - (If the theory on that pdf discussed before is true. Two conflicting requirements - the oil cooler needs positive pressure inflow and the what those guys were saying is the carby requires NOT positive pressure. I'll let you know how it goes.

A couple of questions. I think I'm at the point of needing to make a manometer as well. 1. Why metho ( as opposed to eg. water) and if so what's the weight of metho? So far all the measurements I've read that it should reach about 2 - 2 1/2 inches difference ( were in inches of water ( so I'd need a conversion for the weight of metho.) And the second question is about the holes made in the tube end with a soldering iron. I'm having trouble envisioning what and where the holes are and how they achieve an anti-siphon effect. Can you explain. On a second issue ( and maybe confirmed with that PDF about the Europa ) I was speaking to Jamie Cook last week and he said that they had some success ( in equalising egt's) with changing the cowl air inlet naca duct (for the carby intake) to a simple flat 2 1/4 inch circular hole. So that is my plan for this weekend. He suggested I try it at the current site and if it helps he had some measurements of where they got it to site best. Now that article seems to perhaps explain why it might work. A flat hole will I assume have less efficient air entry and maybe even have a Venturi effect so turn it into a less positive air pressure down the tube. Maybe??? I'll try it this weekend and report back next week.

I downloaded an app called Oprint which you install on your desk top and it acts as an AirPrint emulator. Allows you to print from any wifi device onto your desktop linked printer. Seems to work well.

I'm sorry if I've made it sound I was being derogatory to your comment. That wasn't my intention. I apologise. With regard to the use of computers I was only thinking of using the Internet for diagnosis. In regard to using it for drug interactions etc. Well, yes. It has its uses in that area. Not as much as you might think but with the bewildering array of generics available now I use the Internet mostly for just finding out what the brand named drug actually is, more than for interactions. Most Australian patients are on a surprisingly small range of medications ( some may be on many drugs but many are from a small range of family groups with each member of the family having similar interactions side effects etc. ) that's how come a community pharmacy/chemist shop can have all their prescription drugs in one relatively small room - way smaller than the room they keep their stocks of vitamins, cosmetics and shampoos and conditioners and other chemist goodies in. No one stops and look up every drug we use every time and chase up possible interactions in the Internet. And yes , while they happen - For every uncommon time someone does miss an interaction they would be prescribing hundreds or thousands of times safely without having to look it up. So yes. In general GPs do and should be able to prescribe without having to go look up interactions. In our exams we are expected to be able to quote verbatim the multitude of interactions and contra-indications between standard commonly used drugs. Student doctors and doctors sitting specialist exams are also are expected to be able to relate the significance and rates of interactions. Not just list a whole screed of interactions but to actually know which of these is likely to happen frequently versus rarely happen and what the significance of the reactions are. Of course there will always be someone who forgets but many studies have shown the cause of failure to detect potential complications is more commonly related to not asking or knowing what patients are on rather than not knowing the interactions they cause. In terms of sitting with a computer on the desk, that was one of the biggest complaints in a Med Journal of Australia report a couple of years ago. Patients overwhelmingly complained of feeling ignored by doctors who used computers during the consultation. I guess that may be generational thing because statistically most patients are elderly. But for now it's a bad look to sit hidden behind the computer like an accountant while the average patient wants a caring doctor who is on full view to them and who at least appears to be solely focused on them. Don't take it from the above that I'm an anti-computer old fogey. I have 2 iPads, an iPhone, a laptop and a desktop. Wifi through my house and my practice has 7 computers and our own server. Just that like all tools it's not always as useful and pain free as it might seem to the onlooker.

There is a BIG problem with mal-distribution not with total numbers. Once people graduate from medical school there is a huge difficulty in getting them to move to rural areas. ( much of it real and in fixable. And some possible to fix but difficult) and worse once a specialist is qualified their family is ensconced in the big city and unable to move due to all the things that families get involved in. But there is another issue and that's the bottle-necking in training. We have a huge number of medical students ( still in university) who will have no intern jobs in the next couple of years and a large number doing internships ( first year out of uni, limited experience and very little idea of what's important and what's not. Not yet allowed to practice without supervision) and a few years after internship they still are not capable of practicing fully alone without backup. So what we get is a distribution of Aussie doctors stuck in the cities and they import doctors from third world countries for rural posts. And that is a huge other problem area we could discuss for weeks.

Sorry but I couldn't disagree more with all the bits except the issues about meth-amphetamine. . In fact it's the GP who has the greatest need for seeing and doing the simple stuff in significant numbers because they are the ones who first see the rare and dangerous in amongst the dross. Specialists are often spoilt- we get sent the filtered, already diagnosed. The GP is the guy/girl who needs to see a thousand kids with a fever, mild rash and sore throat to know that number 1001 has not just got a cold but because the rash looks subtly different he has meningitis and if the doc doesn't treat him correctly now, he'll be dead in 12 hours. The GP is the one who sees a thousand people with high blood pressure but has to not be lulled by the banality so they don't miss that the patient says in passing he gets a headache when he pees and actually has a malignant adrenaline secreting tumour of the bladder. Don't for a minute think that high level knowledge and capability and the constant need to exercise the basics is restricted to the specialist. Won't say anything about specialists taking weekends off - except "I wish!" If your doctor (GP or specialist) is using doctor Google you need a new doctor. There have been several very large studies looking at the use Internet sites for diagnosis and treatment and they have been uniformly scathing. When patients or doctors (who purposely don't use their knowledge) do their own googling the likelihood of a wrong diagnosis is 80 - 85%. When a doctor uses it to make a diagnosis when he doesn't already know the diagnosis the chance of a wrong diagnosis is still about 15%. So essentially if your doctor sits in front of a computer making the diagnosis. Go somewhere else as fast as you can!

Unfortunately while it's the first thought - you've missed the point. It's not doctors where there is a shortage. It's beds and nurses. But politicians and bureaucrats have been missing the point for decades. The reason there is a GP shortage ( which is not what this thread is about because that's a completely different set of problems) is the governments closing down of funding for GP training after doctors graduate from hospital training positions. But it's a very complex situation so would not help the current thread by complicating the story here. The other thing that misses a very significant reality is the "let somebody less qualified do it" and leave the difficult stuff for the doctor" is that's like saying -" let's have a a low hour ppl in the pilot seat of the airliner ( plenty of us would do it for free for the hours in the log book) for the easy flights and just save the talent of the ATPL pilot for when it's really required. " Well very soon the ATPL has his skills eroded by only being required intermittently and then you have no one with the experience to do the job. Doctors maintain their complex skills by constant doing the easy easy stuff! And the other really annoying thing is doctors are now required to do huge amounts of recurrent training, continuing medical education etc ( I personally have to to do hundreds of hours of point scoring Continuing medical education per year) because "we are aren't safe" unless we do it, yet there is a push to use people with less skill and training to do the same work because it will cost less. Well we could do it better and cheaper if we didn't have spend so much on education too. Something doesn't make sense there when you look at it.

And it's all about to get worse. We now have a glut of medical students coming out ( I am a senior lecturer at a medical school and we have nearly doubled our student intake ) and they have no guarantees they will get a job upon graduation - nothing unheard of about that ( many uni graduates from other courses face same issue - except society has spent nearly a million bucks on training each one of the doctors and way less on arts degrees and lawyers and then if they don't work for a year or more and are then so out of currency that they require more of society's money spent on them to get back up to speed when the jobs become available. The real place money has to be spent is on nurses and staffing the beds in the wards ( not in emergency departments). One of the prime reasons patients spend so long in the sausage mill of the ED ( Emergency Department) is that there is bed block in the wards - the places where the ED patient has to go after being sorted out in ED. If there' s no where to go they stay in ED taking up staff, bed space etc. Why has this happened at all? About 20 years ago health departments federal and state conducted planning into future needs. Doctors and nurses said we need more of what we have. Bean counters said "no you don't - we need less! In the future almost every operation will be keyhole surgery, almost everyone will be having daycare only surgery and we will need less beds. And besides more doctors means more work gets done and more work means more cost." Well they forgot that we have an aging population who have more "medical" as opposed to surgical problems) which prolong hospital stays and not all hospital admissions are about surgery and not all surgery can be daycare and not all surgery can be keyhole. And not all social circumstances mean patients can be sent home same day. And Australia is a big place ( unlike Europe where they modelled this new age care) and you can't operate on someone and send me home if they live four hours drive away with no medical support there if they have a problem. Even worse if they are country person who has to wait till next Wednesday for the only flight, bus or train that goes to your home town. Sadly a lot of the problems we have were foreseen by the front-line workers at the time but we were told we were just acting in self-interest.

Yep. They are so much alike. One difference though is that we don't come with a manuaL. It's a bit like what would happen if an A380 was magically plonked in front of us and with no manuals we are expected to write our own. And we can all write our own manual which may or may not align with someone else's manual. The manual builds up according to who stumbles upon what issues when and if they decide to tell the rest of the world about it. And Anaesthesia is the area of medicine that most parallels aviation Planning = pre-op assessment Take off = induction Cruise = maintenance phase Landing = emergence Post flight putting away, addressing issues = recovery In the event of bad events - reports, debriefs etc Next flight ( patient) - same steps but completely different

Rogers and Whittaker has been modified since then as well. Very complex but one of the problems early after that was a surge in people who sued because they got complications. Not that they were avoidable just that they claimed (or were not ) they were not told about them. No need to prove they would not have taken the risk anyway, if they had been told. Resulted in huge payouts for totally obvious things -I have a friend who got sued and found against because he didn't tell a patient that cutting into and draining a huge abscess that was making him sick would leave a scar. Absolutely no way he would have refused to have the life saving surgery to drain the infection but he just wasn't told he'd have a scar. That was one of the cases that was cited to change Rogers vs Whittaker. Now you also have to convince a judge you would not have gone ahead with the operation if you had been told about the risk. As for good bedside manor, Dutch is right. As a general principle yep good bedside manner is great and desirable but .......... There's always a hidden problem. Good bedside manner is sometimes a front for being a crap doctor. We have an elderly surgeon in my town who is the smarmiest little weasel. Has the gift of the gab with patients. I've heard patients say how caring and wonderful he is and no-one seems to ever complain. But he's a complete idiot, and is technically a deplorable surgeon. He is so bad only one anaesthetist in a town with about 30 anaesthetists will work with him. Another surgeon sees about 3 patients a week who need fixing up after the first guy has trashed them. weve tried to have him deregistered but patients won't complain and there's only so much you can do when patients who have incured problems think he's wonderful.

As a general principle its probably somewhat right. Except you need to be very wary of docos - they present the bits that make a good story and forget to tell the real world other bits. A great example is the principle that we do "too many caesareans". (But you can cut and paste just about any operation into that.) The general belief is we do too many. The often quoted standard is about 20 % of births as caesars is acceptable. 1:5 births That's a general statistic. It gives no indication to a O & G standing in front of a patient in labour on what to do. We know that some signs and findings are associated with bad outcomes. But all of those signs etc can be seen in some women and they still go on to deliver normally and have a healthy baby. Now transplant yourself into the situation. You have a woman in labour in front of you. She displays some signs that sometimes seen in bad outcomes. You can caesar her - have a healthy out come - mother and baby. (By far the statistically most likely outcome ) You can Caesar and have a complication of the surgery - compared to good outcomes, rare these days. You can not caesar and still have a healthy outcome You can not do a caesar and have a bad outcome - baby with lifelong birth defect and all the horrible stuff it causes. - dead baby - dead mother - spend years going through court battles over it - lose your medical career, your own marriage and own own future There is absolutely one thing you will NEVER do. And that's say to the mother "I have done 5 caesars already this week. So even though I think it will be best for you, I have to keep the averages within the state limits so I can't do a caesarian for you. " But that's what the arm chair experts have no concept of. They never have to actually make the decision. With regard most medical procedures - you only know which outcome you're gonna get - after you've done it.

Mmmm .... Sorry But No. cos .....This is not a cause of back pain - In terms of common back pains, it has nothing to do with it. In fact probably the only cause of atherosclerosis being a cause of back pain is when an aortic aneurysm in the chest dissects (tears open or between layers) and can cause sharp pain referred to the interscapular area. (Middle of the back between the shoulder blades and that's rare these days and portends a very high risk of rolling and dying there and then. ) There is a very rare syndrome called Leriche's syndrome which can give buttock pain with exercise ( as well as impotence ) that is from atherosclerosis but that's not back pain. For the record In western societies causes of low back pain (Majority of cases of back pain) Way most common - Musculo-skeletal causes (Including Osteo-arthritis, poor muscle tone and function and lots of others (includes the disc pathology Dutch mentioned) Then - True nerve entrapments and nerve injury (surprising low incidence really) - despite everyone thinking they have "pinched nerves" . (Dutch's Disc can make a crossed over appearance here too!) Followed by - Uncommon Auto-immune Diseases (Ankylosing Spondylitis in males, Rheumatoid Arthritis in females etc ) Secondary malignancies (esp. prostate cancer in the case of readers of this forum) Rare infections Small number of even rarer causes (with exception of malignancy and some rare infections....) All are made worse by obesity All can be affected by posture Most can be ameliorated by exercise Treatment involving these modalities now forms mainstay of treatment for most back pain. Only a small number need surgery. Current commonly quoted benchmark is that if as an orthopaedic surgeon you are operating on more than 10% of the patients you see for back pain you are operating too much. (But this is variable because if you have a highly knowledgeable GP referral base then they may do a lot of filtering and appropriate treatment so their referrals are more likely to be people who really could benefit from surgery. If your referral base is 24 hr medical centers and high-turn-over, churn 'em-through and refer-em' centres etc then it could be even lower than 10%. I have never heard of any study looking at enhancing immunity suggesting it can make any difference. In fact the causes that are known to be associated with immunity are ALL related to excessive immune responses (Rhuematoid, Ank. Spondylitis) causing the immune system to attack the linings around the joints. The treatment in those is to suppress the immune system. Have to be very careful when anyone tells you that something "enhances immunity" - mostly they have no idea what immunity is, what cells, substances, factors or pathways are involved. Often it's something like primary school logic - "There are cells in the immune pathway, cells need protein, vitamins or some substance to function. Therefore if I sell you something that contains that something it will "enhance your immunity". " They have no idea whether it ever gets to the specific cell involved - often these things don't - they are metabolized and used for something else. Nor whether if it gets to the cell whether it actually even gets used by the cell. Mostly the claims are never the result of testing for either increased end cell activity or any evidence that immunity was ever changed or that test subjects ever actually had any clinical benefit from the taking of the original substance.

I was listening to an ABC radio report some time back that quoted this. But turned out according to the report that it's not really that true. They interviewed Ibraham himself who said that the pilot was a supporter of the political party that Ibraham is in, that the pilot had been to one or perhaps two party official events where ibrahim had been a speaker and that he had been introduced to the pilot once at a party event and had never had any other interaction with him. Whether all that is/was true I don't know but that it was a very limited acquaintance rather than friendship sounded plausible from the content of the report not just ibrahims statement.

Don't think anyone seems to have any idea what went on. First it was a denial of service then it wasn't now it's back on to a DOS again. First it came from overseas ( and China implicated by inuendo), then it was an internal DOS and then it was just internal heavy usage now it's back to an overseas DOS from ( or via) the USA. You'd think with all the keeping and tracking of ISP/server data that someone could actually know really what happened.

As far as I know they are not selling them, have never sold them in Australia. I must admit I have no idea if they are still selling them or if the sales have ceased.

The issues that Jabiru are having to deal with are both real practical and bureaucratic. The issues of practicality are first cost. Secondly that there has to be a redundancy for if the electrical system fails. So in itself it may not be that heavy or that costly but you have to have some backup system which does add more cost and more weight. The bureaucratic issue is that to change the engine does not simply mean bolt a new EFI on and go for it. ( Jab have been putting fuel injectors in jab engines for nearly a decade and selling them to other countries for use in military drones. ) But to do that with a people carrying engine in Oz means huge more certification testing and costs. They have made a business decision that it's not worth the effort and cost.

I got a front page only. Had codes to get in but it says I have to send away for the paper forms of I want them. I suspect they must have different forms for apoplectic in different geographic areas. I got in at about 4:30 and did it on line. But a friend got locked out at multiple times during night. Whole thing sounds like it was a three stooges affair. Hope they take this fiasco on board and don't ever plan to do anything important ( like elections) on line.