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2tonne

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Posts posted by 2tonne

  1. Rob Knight's article was included in the latest Sport Pilot. An interesting read and explains the use of rudder on final that I was taught in the J160. At the time it was explained to me that use of rudder was to avoid adverse yaw, but the article explains it more accurately as controlling yaw that you encounter on final due to gusts and turbulence.

     

    I like the quote: "the driver will use the ailerons to level the wings"

     

     

  2. The myth that there have been no fatalities in Jabirus needs to be put to bed. Lets get some accuracy back into the repoting folks. We would nail the media to the cross for such blatant fallicies.

    Geoff, I don't think anyone is saying there have been no fatalities in Jabiru aircraft (although I believe there have been relatively few). My understanding is that there have been no fatalities in Australia as a consequence of the failure of a Jabiru engine, but please correct me if I'm wrong.

     

     

    • Agree 4
  3. The same RAA data I mentioned previously, showed only 3 Rotax failures in the five years.As other people have said, you shouldn't compare Jab with Rotax and on the same basis You shouldn't assess Rotax against another engine which may have had one failure. We're trained to do forced landings because no one yet has a zero record. RAA should be the body assessing the risks and managing them. If they don't do it CASA has to step in. The questions I asked Facthunter show this is not an easy decision to make..

    Yes, but it appears CASA compared Jabiru to Rotax when they put the restrictions in place. They just drew an arbitrary line based on...who knows what? They originally said it was a high and increasing number of failures, but the increasing numbers bit turned out to be bulldust. I believe the latest data showed Rotax has an increasing number of failures.

     

     

  4. TP, it seems to me that you view the law as being very black and white. In my experience, that is not the case. All kinds of human biases come into play when it comes to interpreting and applying the law, both statue and common law precedent, and always influenced by the facts in each case.

     

    I once heard this great talk by a barrister about a particular Court case. He spoke for an hour and a half about all the precedents and the legal tests you would need to satisfy in order to get a preliminary injunction granted. It was all very complicated. At the end of the talk, the most highly respected senior barrister in this field got up and said "yes, that is all very good, but what it really comes down to is whether the judge likes your client".

     

    Personal biases and different viewpoints play a big part in legal proceedings and also in the application of the law by administrative bodies.

     

     

  5. I was participating in a different forum (for running) but which in recent years has degenerated, I think, due to various off topic rants appearing in the recent threads list.

     

    I checked recently and that forum, which used to have numerous new posts appearing all day, now seems to get only a few new posts a day. It is almost dead compared to what it was.

     

    Ironically, the thread that seems most active is called "what pisses me off about [forum name]" and it is full of cranky posts about how bad everything is going. If they stuck to the topic of running, things might be a lot better!

     

     

  6. Your ground tracks actually look pretty consistant, especially with turn points over water.One would normally assume you were doing left hand circuits, although the squeezing effect at the top right hand corner would suggest a gliding turn onto base?

    The height profile is interesting...

     

    You can glide better than your climb rate, which indicates a pretty good climb, are you in a Foxbat?003_cheezy_grin.gif.c5a94fc2937f61b556d8146a1bc97ef8.gif

     

    (Just looked at your profile, I guess this was in the CTMC?)

     

    The little climb at the end of each downwind just before the decent would suggest pulling on flap while still a bit fast?

     

    It is also good to see real glide approaches, getting your circuits down to the 4~5 minute mark.

     

    Keep at it...

    Pylon, you guessed it, they were right hand circuits on 25. The aircraft was a Tecnam Eaglet which does have a pretty good climb rate. I think the slight climb just before the base turn is pulling the stick back to slow the aircraft to flap extension speed. A lot of the approaches in the Tecnam are glide approaches, because gliding is something it does well.

     

     

  7. Thanks TP, I thought the turns should have been closer to 90 degrees, but perhaps I was not accounting for the drift properly, maybe overcompensating. Sometimes at Redcliffe though you get a wind in the opposite direction to that at ground level while you are at circuit height.

     

    Geoff, yes at least the leg that counts most was a straight one!

     

     

  8. I like to think that I fly reasonably tidy circuits. But, a while back I used my GPS watch to track my circuits and they look a bit looser than I would like!

     

    See the attached pics. One is the GPS track and the other is the altitude.

     

    I know that the altitude tracking on GPS watches is not real crash hot, but it does seem to show that I am wandering up and down a bit. Must practice more.

     

    1640904096_ScreenShot2016-01-14at6_33_13PM.png.cd48f2b14e49ead1609dd292774ad872.png

     

    1341749640_ScreenShot2016-01-14at6_28_31PM.png.fce881fcb14fc6dcee2ed102519a2d7f.png

     

     

  9. There are a few threads on here that I wish would go away. They have been done to death and keep going round in circles. I would like to see an ignore option for threads, so that when I hit "New" they don't clutter the top of the list.

     

     

    • Agree 5
  10. I was taught to stay away from the prop arc. So when I switched from the J160 to the Tecnam Eaglet, turning the prop to burp the Rotax gave me the heebie-Jeebies. I make sure the technique I use keeps my head and torso away from the prop, but it still makes me nervous.

     

     

    • Agree 5
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