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JG3

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Posts posted by JG3

  1. SPOT and EPIRB each use different satellite systems. I carry both, good insurance. SPOT has the option of levels of urgency. I have "All is well", "Stranded and need assistance but not injured", "Injured need assistance ASP",  directed by text and email to friends who could organize suitable assistance. Wouldn't always need to a helicopter..... Then SPOT also has the option of calling the cavalry just as the EPIRB does, in which case I would would trigger both devices. Good insurance.

     

     

  2. Today I was trying to fly over the range through dodgy weather. OZrunways and BOM radar was essential for watching the moving weather. Then the iPad had a fit and insisted that it needed to be re-authorized and I would need my Apple ID password to do that. No other way around it..... I didn't have the password with me and couldn't remember it..... So rather than push on into difficult conditions I elected to head back for home.....

     

    So now the password is written in the back of the iPad case.....

     

     

  3. I don't know what all the fuss is about on this. I've used the outer tanks for years on many long trips, and never found the need for level gauges or sight tubes. Fuel burn is pretty consistent so time will indicate consumption. Always use the outer tanks first of course. Start a timer and from experience expect the fuel light to come on about 3.5hrs depending on how hard pushing it, then switch tanks....

     

    But good move to replace that piddly little light with a flashing LED. Off the shelf from Jaycar and mounts easily in a 10mm rubber grommet. Really gets your attention.

     

     

  4. As they are designed to absorb energy from the wind to create electricckery and not create thrust, I don't see it being an issue.

    I've deliberately flown right behind them to test that. Wasn't blowing really hard, just brisk wind conditions, but only a small ripple of turbulence..... Very visible, and unlike wires or towers easy to judge distance, so can't imagine flying into one.....

     

     

  5. I knew the guy personally' and had flown one of his Genesis. Wonderful man in superb health for his age! The Genesis I flew of his did not fly well at that stage, 3 years ago. He was a wonderful man, and will be deeply missed by all that knew him.

    Is this the guy who originally imported the Genesis???

     

     

  6. Found the crush plate but don't have an 'A' box to compare flange specs. Plate dimensions are: PCD of 6ea X 9mm ID bolt holes is 37.5mm and PCD for 6ea X 6.7mm is the same. Od of crush plate is 100mm. I'd reckon the g/box prop flange will be the same for 447 thr 503 range but will await your confirmation that this one will fit before putting it in a postal bag. Send us your mailing address with your confirmation/denial. cheers bob

    Yep, crush plates are the same.

     

     

  7. BMs Savannah was at Avalon when the supercell went through there a few years ago - his tiedown pegs held (sorry, don't know what system he was using) but the tiedown points built into his wings failedBP

    I made those tie-downs that BM was using at Avalon. It was a violent storm front that blew several aircraft away. BM's Savannah was tied down at the junction of the strut with the wing. The force ripped the strut off the wing and flipped the aircraft on it's back. The tie-downs were still holding in the ground.

    These tie-downs were meant to replace the Screw-Its. I never got around to officially naming them but they were generally called 'Whack-em-Downs'. I only made about a hundred and sold them by word of mouth, but got distracted by other projects and got too lazy to carry on with production work. Now I've handed over the design and manufacturing jigs to some one else who is now tooling up his workshop for production. Don't know when he will be in production, but there are already several potential customers waiting.

     

    Those tie-downs should be in production because they really do work well. Can drive them into the hardest ground and still easy to pull with the hammer/pulling tool. Lots easier to drive and pull than the 'clam', and weigh less. Hopefully we'll see them advertised soon, watch for them.

     

     

  8. Well, I`ll be! As a bike rider, I had my idea about 40 years ago, forgot all about it till I read the post from jg3...Thanks!Frank.

    I'm sure many have thought of the concept, but then realized the problems with practicalities.... Where is that WA trike now, and how much has it flown??? Patent applied but we haven't seen any production....

     

     

    • Like 1
  9. No spats Farri. The reason is a massive change in the AoA as it sits on the ground. Previously it sat almost flat so there was insufficient AoA to get flying under 55kts, same when landing...if you arrive at an angle where you can fly at 45 kts, (and will easily fly at that speed) the tail wheel will be running down the runway and the mains still well in the air.Makes little or no difference once I'm airbourne, just enables me to get it off and on at a lower speed at a higher AoA.

    I've built a 95.10 that I call my High Clearance Trail Bike.

     

    1031533256_Hi-CTB2(Small).JPG.d476db622d71372f760d9223f2e442d3.JPG

     

    The wing is Drifter skins on my strut braced frame, so essentially the same as a Drifter wing.

     

    Bottom surface 12.5 degrees in three point attitude.

     

    Weight is 184kg so it's heavier than a pre-cert.

     

    When holding the tail wheel on the ground, it leaps off at 33kts indicated, landing pretty much the same. Flies just fine at that speed, and of course hold down in ground effect and the speed quickly builds up to 50 for a good safe climb. Sure is great for STOL ops off rough ground.....

     

    A lot of Drifters sitting at that flat stance on the gear give up a whole lot of STOL capability....

     

    I'd like to see a Drifter with motorbike wheels on the mains to increase the three point attitude. Probably small trail bike wheels would be tall enough to give the right attitude. Sure would look cool.... Would have to machine hubs or adapters to mount on the stub axle, but not a big problem. Might even be able to use motorbike caliper brakes....

     

     

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  10. Also beware of the seller suggesting using an escrow company that they have found trustworthy to supposedly protect you until goods received. That escrow company will have a legit looking website but is also a part of the scam, and the money will disappear. If you must follow the temptation of that sale, then use your own escrow broker who will only release your funds after you receive the article.

     

     

  11. That's the 701 with the "Beanie Mod" - I read a lot of his posts over on Zenith.aero. Seems to work ok and I believe a few others have modified / are modifying their 701's the same.

    Yep, Joe did the very first Beannie mod, also was one of the first to remove his slats long ago.

     

     

  12. We've replaced several windscreens. We find 2mm plenty thick enough and still easy to work and cut with tin snips. The original was 1.5mm. Note: When using the original as a pattern to cut out the thicker one, leave an extra 12mm on the door post edges, otherwise the new one will be several mm short. Trim to suit after drilling and clecoing the door posts. Drill 4mm holes for the 3mm rivets to reduce stresses. Riveting the front down tubes creates concentrated stress points that can start cracking, so don't rivet them. After the door posts are riveted, force a dense foam strip between the down tubes and the screen. We find the foam material about 8mm thick used for concreting expansion joints to be ideal. Poke it in with a screwdriver, thus tensioning the polycarb. Works really well.

     

     

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  13. Does anyone know how high the CTAF airspace extends above an uncontrolled airfield??

     

    I understood that is is 3000' AGL, but I don't know where or if it's written....

     

    The reason I ask is that I often hear aircraft overflying my home field at Kilcoy (alt 400') and announcing that they are approaching and overflying at 3500', direction, intentions, etc, etc.... An aircraft at that altitude is of no interest to me at circuit or approach altitude. But a radio transmission from that altitude carries widely, to Tyagera, NSW and way north of Gympie, and so ties up MULTICOM radio time for a wide area that also has no interest in the content. Seems to me that when flying x-country at 3000' AGL or above we would be best to not clutter the airwaves with such 'overflying' broadcasts......

     

     

    • Agree 1
  14. [quote=Of greater benefit (in my opinion) is that the vortex generators improve the aileron authority deeper into the slow flight regime.

     

    I am interested in experimenting with vortex generators only affixed to the outboard section of the wings so as to enhance the low speed authority of the ailerons while leaving the inboard section of wing to stall at it's normal angle of attack.

     

    It seems likely that others may already have experimented with this idea and I am wondering if any information is available?

     

    I am especially curious if a second row of vortex generators closer to the ailerons has been experimented with and if it has proved to be beneficial or not?

     

    Thank you.

     

    Yes, VGs only in front of the ailerons has been tried many times and is effective in increasing aileron authority at lower speeds. Jabiru 200 series have particularly noticed this.

     

    There is unlikely any benefit placing a second row of VGs farther back near the aileron, due to the thickening boundary layer at that point. The vortexes once generated by the VGs at the front of the wing are very persistent and stream right back to the trailing edge.

     

     

  15. Hi, Id be very interested to discover what the problem was and how it was solved. Thank you in advance. Cheers

    The flaperons were set incorrectly, with some downward droop. When he got the ICP jig to set them properly, all came good.

     

     

  16. Woman: Do you drink beer?

     

    Man: Yes.

     

    Woman: How many beers a day?

     

    Man: Usually about three.

     

    Woman: How much do you pay per beer?

     

    Man: $5.00 which includes a tip (this is where it gets scary!)

     

    Woman: And how long have you been drinking?

     

    Man: About 20 years, I suppose.

     

    Woman: So a beer costs $5 and you have three beers a day which puts your spending each month at $450. In one year, it would be approximately $5400 correct?

     

    Man: Correct.

     

    Woman: If in 1 year you spend $5400, not accounting for inflation, the past 20 years puts your spending at $108,000 correct?

     

    Man: Correct.

     

    Woman: Do you know that if you didn't drink so much beer, that money could have been put in a step-up interest savings account and after accounting for compound interest for the past 20 years, you could have now bought an airplane?

     

    Man: Do you drink beer?

     

    Woman: No.

     

    Man: Where is your airplane?

     

     

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