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Blueadventures

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Posts posted by Blueadventures

  1. 1 hour ago, skippydiesel said:

    Does the lack of response mean that no one has tried using silicone coolant hose ????

    I have 25mm silicone hose; only use 4 ply.  No issue with it last 2 years.

  2. 4 minutes ago, Markdun said:

    Returning to the orthopaedic hospital ward, I’m not to sure I’d place too much on the anecdote about wards being filled by motorcycle crash victims. When I was last in an orthopaedic ward most of the other ‘blokes’ had a sixpence stuck in their throat or polio. And I can vividly recall having 4 burly nurses struggling with difficulty to extricate myself from the bed to be taken to the operating theatre. The surgeon turned up to see what the ruckus was about (it was a pretty hard physical fight, plus screaming etc) and he then noticed, when I broke one leg free and kicked the nurse away, the scabs on my legs from extensive grazing and bruising from a recent bike crash. I was then evicted from the ward precisely because of my bike injuries.  It was a great lesson for a 7yr old.

     

     I’d suggest the aged mc fatality issue is overbaked. Really how many guys are there under 40 riding compared to over 40? probably 50:50. My wife’s racing bike is 250cc and I have difficulty getting it to exceed 100kph despite her once having to explain to a magistrate why she was doing 110kph in 3rd grear in a suburban street on the then unregistered Ducati. So yes, there probably is something in the extra power of modern bikes.  But I also see increasing incidence of drivers incompetence; much much more ppl over the centreline (inc double unbroken lines); ppl driving at 40-60kph at night on 100kph roads etc etc…we’ve all had the whinge. I conclude that as roads have improved, driving skills have delayed more. It might be the same for flying

     

     

    Back in the late 70's early 80's you could buy a cheap hang glider there as well.  Sad but true.

    • Like 1
  3. My understanding is bfr in VH aircraft is recognised by RAAus and bfr in RAAus aircraft is not recognised for VH for their bfr requirements.  This for last more than 12 years so maybe you have been slipping through the systems cracks in past years.

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    • Agree 3
  4. 39 minutes ago, BrendAn said:

    in the raa training we are taught to set up for landing quite a way and control the shallow descent with throttle. a couple of older pilots i have spoken to at the airfield reckon this was a bad way to land, they were trained by ag pilots to come in high and drop in on the runway so they can always make it if the engine fails. i am probably stirring the pot saying this but i can see the logic in it.

    quite often coming in to land in the tecnam if it wasn't for a burst of throttle we would land short of the runway, just inexperience i guess.  

    I'm not an RAAus instructor, just a pilot.  My take is approach keeping best height until within glide approach; you can scrub height at lateish final with side slip.  Long shallow approaches are not allowing for an engine issue.  If circumstances are that your low and have an engine issue or failure, have alternate sites (best options) to land picked all the way in and don't ever think you can extend the glide.  Not meant to be instruction just my methods.  It's a bit like fighting a fire what you see; is what you have to deal with using your training, equipment and experience, their all different to some extent.

    • Informative 1
  5. 1 hour ago, BrendAn said:

    I don't disagree about training. I am saying the pilot in question made the decision to fly when another person left his plane in the hangar because the weather was bad and the airfield manager said when he heard Matt taking off he was surprised anyone would fly in those conditions.

    I agree; seems the day may not have been suitable for circuits or local flying within 25 N/mls due to weather in the area.  It seems he was a converting pilot (from class 'D') and had gone solo in the new class.  The Coroner will take all that and other evidence on board and make findings and recommendations.  The recommendations are not mandatory but best to seriously backup any decision not to implement them. I would not blame the instructor for any pilots decision to fly a plan of the pilots choice when they are not supervising (say XC endorsement etc) or if they are asked advice on the day about the flight plan.  I expect they would have interviewed a number of soloed student pilots about post early solo flight progression of shills and endorsements and reinforcement of their current certificate limits (eg Pax, XC etc). 

    • Like 2
  6. Hi Marty  Just for info, these are the fuel tank vent covers I use and the Pitot tube cover.  (You can see the start of a wasp mud nest on the Pitot cover, the idea of the paper element is a carryover from my gliding days.) Wasps and bugs can't get in.

    20191109_171059.jpg

    P1020829 - Copy.JPG

    • Like 1
    • Informative 1
  7. 29 minutes ago, skippydiesel said:

    My reading of the Sonex chart:

    The engines for their aircraft are in their prefered order. ie the data is skewed in that direction

    Don’t see that; looks historical with Aerovee first, then Jab being similar and air cooled also, then the Rotax as some want to fit those and lastly the newer UL range that will fit the Jab mount. The aircraft first designed for air cooled engines and the Jab 3300 is undoubtably the best performer being 25% better climb rate as one example.

    • Like 2
  8. 1 hour ago, skippydiesel said:

    Very nice Blue,

     

    I would point out that:

     

    Sonex have only very recently "recognised" Rotax 9 engines for installation in their aircraft, so I wonder how good their data is?

    To the best of my knowledge Sonex do not have or ever had, a Rotax powered airframe, with which to arrive at the above figures.

    Sonex are so slow to adopt Rotax, that they are only now coming up with a suitable engine mount for future kits

     

    My Sonex Legacy/Rotax 912ULS will easily achieve (Max load):

    • 1500 fpm in Climb Out,  80-100 knots, - I am still working on best climb speed.
    • 130 + Knot True (150 mph) at 3000 ft, 5200 rpm, @ 15L/hr
    • 147 knots indicated 150 + knots (173 mph) at 5450 rpm, 5500 ft, still working on the fuel but believe its 18-19L/hr

    If you are wondering about the accuracy of the above air speeds,- the pitot/gauge system has been independently tested and a range of errors noted:

     

    Indicated/Corrected Air Speeds in Knots

    40/48.5, 60/66, 100/103, 120/123

    140/142, 150/152, 165/166

     

    PS -

    • For me, speed itself, is only an indicator of airframe efficiency, when powered by the same/competing engines. Sonex recognise engines to 130 hp however it must be obvious to all, that while the speed may be greater, with such an engine, so is the fuel consumed to arrive at that speed. I want to travel in my Sonex , so fuel consumed per hour for a given speed will determine my power setting for near best range - I think my Rotax will do this for me.
    • Do you think the tendency of US small aircraft manufacturers, to express their aircraft performance, in mph might be because it always looks better than in Knots???😈

    All the data shows is that the Jab is the engine for performance and a Rotax 912 will never catch the Jab 3300. That's all the manufactures statement is saying.  As such the nice Jab 3300 is the better engine for performance.  Therefore Robins record could be bettered with a Jab 3300 in his aircraft or similar tweaked similar airframe. .

    • Haha 1
    • Informative 1
  9. Performance of Rotax 912 in Sonex is inferior to Jab 3300 engine after comparison testing by the manufacturer.  Therefore Jabiru 3300 is King in both climb rate and cruise.

    Engine_Performance_Comparison_012323.jpg

    • Winner 1
  10. 8 minutes ago, facthunter said:

    Skip is it JUST POSSIBLE your last post applies to you?. You are very scathing/dismissive of many other opinions, Nev

    Exact same thought, absolutely agree. 

    • Like 1
  11. 17 hours ago, danny_galaga said:

    Yep. Been saving a LOT of money 😄

     

    But my plane is nearly ready for test flying, so I do need to find a way to get back in shape so to speak. The flying school I was hiring from are on a bit of a hiatus. 

    Try some share flying with a neighbour at the airfield with a similar performance aircraft; you may not do the take-off or landing but can refresh some upper air stuff and slow manoeuvres etc.  When you solo in yours wait for ideal conditions the first few flights as you want to get the feel of it that will be hampered in wind gust or thermal conditions

    • Agree 1
  12. 6 hours ago, BrendAn said:

    Bobby bailey. Designer of the dragonfly hang glider tug killed in one of his own aircraft.

    A bolt was left out of one of the struts and it folded up the wings in flight. It still amazes me how so many highly experienced people get into trouble flying.

    They are saying he was doing the first flight of a new build that was brought to where he is for the flight.  They say he would not have been able to see the bolt mis-assembly.  Not said whether he assisted in the assembly before the flight.  I'd expect he would have done a through preflight / initial flight inspection.  Very sad when anyone dies flying and more so when such an identity.

    • Informative 1
  13. 24 minutes ago, Freizeitpilot said:

    I haven’t seen the stats for Australia, but RAAus aircraft with installed parachutes are still pretty rare….but slowly increasing. Of course there is a significant cost and weight penalty but 

    from reading various threads on this forum you would think that BRS was the work of the devil.

     

    Hence, I’m pretty sure this incident was the first deployment in Australia, at least for an 600kg LSA. 

    Also an expensive item to have serviced, freight included.  Have a friend that has a chute due in November; he is going through the exercise of its service.  The agent is compiling an instruction to allow L2's to dis arm the rocket motor to make safe, so chute can be sent away for repack and rocket due later on. Sounding very involved for him.  I see some are left un-serviced and placarded not for use. As the aircraft with them get older more will be due for service.

  14. 4 hours ago, danny_galaga said:

    Well, I've taken so long building my plane that the company has stopped making them 😲 so my list (minus the engine parts) will become even more relevant for me over time. 

     

    They are restructuring, and will still be supplying parts. One thing I'm toying with is to get a spare set of sails. People say 'just get a sailmaker to copy them'. Problem is, they are pretty complicated sails, and I've heard some horror stories. Of course it's a HUGE expense holding onto a spare set, and they take up room in my already chockers garage.

    I'd wait till needed someone will make them I'm sure; maybe even out of Xlam material. New should last well being hangared.  Could get covers made that will keep them in better condition; by Punkim Head Air Sports.

  15. 59 minutes ago, Thruster88 said:

    14/4/2024OCC3655DubboNSWJabiruJ230JabiruGen 4 3300OCCURRENCE DETAILS SUBMITTED TO RAAUS: During the flight, the pilot heard a bang and the aircraft sh... 

    OCCURRENCE DETAILS SUBMITTED TO RAAUS: During the flight, the pilot heard a bang and the aircraft shook violently. At first, the pilot thought they had collided with a large bird. The pilot disabled the autopilot and checked the readings, and temps and oil pressure were normal but RPM was erratic. The pilot closed the throttle to idle and made an immediate turn for Dubbo. Approximately 15nm east of Dubbo airport, the pilot contacted ATC with a Pan Pan. After 1-2 mins the prop began to spin slower than the RPM and was causing an excessive sink rate. The pilot switched to a MAYDAY call as the airframe was shaking even worse and affecting controls. The pilot made an uneventful landing into a paddock. The pilot shutdown the aircraft and advised ATC of landing.

    End of RAAus report.

     

    My comment

    Bird, loose prop, dropped valve, we will never know. Got to love the way these reports are written. "After 1-2 mins the prop began to spin slower than the RPM and was causing an excessive sink rate". WTF does that mean.  

    If in fact the prop spun slower than the rpm the crankshaft will be interesting now; glad aircraft got on the ground undamaged and pilot ok. If bird strike you would expect some noticeable signs or splatter on after landing inspection.  Therefore, maybe an engine matter.

    • Like 1
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