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JG3

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About JG3

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  • Aircraft
    Savannah
  • Location
    SE Qld
  • Country
    Australia

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  1. Try it, you might like it. It's a delightful feeling just floating along with just the swish of the air going by. It's almost addictive..... Focus on the airspeed for best glide and the plane will fly just fine.
  2. What sort of aircraft is that with a 22:1 glide ratio?? That's darn near a glider..... Nothing like most of the recreational aircraft we fly, with GR around 10:1.....
  3. I must emphasize that this only tested glide at idle power vs prop stopped, no other option with a Rotax engine. It says nothing about glide with a windmilling prop. Someone with an aircraft/engine combo that does leave the prop windmilling at best glide speed needs to do the tests to settle that argument that goes on and on. It's easy to do, and only needs a stopwatch besides the altimeter you already have, and a phone does that. Early morning before thermal activity, climb to 3200ft, set up a glide at your best glide speed, time the descent from 3000 to 2000ft. Repeat se
  4. There’s been a bit of discussion (argument) recently regarding the difference between glide ratios at idle power vs with prop stopped. I’ve long known from experience that the glide ratio with prop stopped is less than at idle, but decided to do real measurement tests to settle the argument. With a Rotax engine there’s no option to keep the prop spinning; it’ll stop and stay stopped very quickly after switching off at glide speed. In an 80kt dive the prop will creep slowly from one compression stroke to the next, but no way spin. In this test, the idle speed static on the ground was 167
  5. Yes still watching. Want to hear the result of this mystery.....
  6. Hi JG3 - Just re read your article(s) on propeller performance/comparisons. I have been trying to get some informed comment on CS/IFA props (you may have seen my thread "Prop Selection" on the topic. I would be very interested in your observations on the matter.

     

    You will find in the aforementioned "thread" my rational for going down this particular line of enquiry - in short - terrible home field, requiring short field TO/Landings, ever time. Ground adjustable set for advantage climb. Resulting in, expected, reduced cruise performance. My wish to explore options to retain excellent existing TO & climb out performance, while significantly improving cruise. Seems to me a CS/IFA is the only way I can have my cake and eat it. I guess the question is by how much (if at all) can I expect to gain in cruise.

     

    Aircraft: ATEC Zephyr, motivated by Rotax 912 ULS through a Fiti 2 blade ground adjustable. Note:  Fiti - couldn't be happier - very smooth, quiet running.

  7. Bombardier Recreational Products (BRP) says it has suspended the delivery of aircraft engines to "countries with unclear usage" in the wake of reports that some of those engines are being used on Turkish combat drones deployed by Azerbaijan in fighting against Armenian forces in Nagorno-Karabakh. The Quebec-based company — better known for its Ski-Doo and Lynx snowmobiles — said it became aware late last week that some of the recreational aircraft engines produced by its Austrian subsidiary, Rotax, are being used on Turkish Bayraktar TB2 unmanned aerial vehicles (UAVs). https:
  8. Gday, Finally the results of testing the EProp in comparison to Bolly and Kool (Luga), using manifold pressure to set engine power exactly equal for each. Once again surprising results that required testing again and again to confirm. The results and analysis are several pages so access them here https://www.stolspeed.com/nid/46 EProp Testing.docx
  9. She was very cool the way she handled that flareup.
  10. It's not who you were told. I have word from a neighbor of his at Gatton Airpark. He flew a trike there.
  11. That's way out of date; I haven't kept it up. There's way more available now as already demonstrated. Excellent project. Hopefully tied in with OzRunways for convenience.
  12. And these days the USA can't produce enough face masks when they need them......
  13. I've done that but the ad is still up......
  14. Now my question is how do I remove an ad after the item has been sold?? I guess I'm slow but can't find a way to do it.....
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