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pylon500

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Everything posted by pylon500

  1. pylon500
    Nope, didn't work... Just went to youtube front page..
  2. pylon500
    There is a HUGE guess the airplane thread over on an R/C forum, lots of oddballs; http://www.rcgroups.com/forums/showthread.php?t=287752
  3. pylon500
    Cheyenne on a test flight; (only just uploaded this, youtube may still be stabilizing the image 13:49-13/05/16)
  4. pylon500
    Good to see it wasn't taken with a 35mm cannon on automatic....!
  5. pylon500

    VH-VRV

    pylon500 replied to gwaf's topic in Vans/RV

    Yoiu need to be careful with some rego's if you turn them upside down;
  6. pylon500
    And while the 912 does not have any form of 'impulse' magneto, you should be aware that if this condition exists (broken wires /hard to stop), then you technically have a 'live' engine. I would be very hesitant to turn a 'warm' engine in this condition.
  7. pylon500
    Getting back a little closer to the original thread, I had a read through the 2015 reports, and noticed a lot of inconsistencies, mainly in the 'Outcome' section, which didn't always seem to have anything to do with the incident? Did read that same report for the thread incident repeated on two different days? And still think there is more to the presumed fault than we are hearing.... As an aside, I often buy Bunnings and SuperCheap tools for their price, and oddly enough they either work for a good period of time (thereby thinking I've got my moneys worth), or they fail within twelve months whereupon I get them replaced for free.. Ozito routers and 240v fluro lead-lights come to mind.
  8. pylon500
    There is another RV4 on the register, doesn't do a lot of flying, and the owner was debating whether he wanted to keep it (it's in pretty good nick). Looking at your avatar, it mentions a P96? Maybe the RV owner would do a swap with you? I'll have to give him a call...
  9. pylon500
    That's got some serious power behind it!
  10. pylon500
    I think they need to try and explain better, what was so hard about making a geared turbo fan? Turbo props have been doing it for years, in fact I'm sure there has already been geared turbo fans for a while...?
  11. pylon500
    There's pro's and con's to either setup, so I'll just add more confusion by saying, your trim tab effectiveness can also depend on what side (left or right) of the elevator the tab is fitted to with regard to propellor slipstream effect..... The amount of angle applied to the tab can be affected by it's overall size, which can also be changed with the amount of power (prop thrust) that it gets, and/or the speed you fly. Some tabs are placed out near the tip of an elevator to avoid changes caused by thrust (or lack of it). It can all depend on why exactly you need a 'fixed' tab, maybe if it's an overall trim requirement, you could adjust your tail plane (stab). If it's a power/pitching couple, maybe you need to adjust your thrust line? Personally, I tend to go for the A option... Glad to help.
  12. pylon500
    Does that mean we will see them in stores by Christmas?
  13. pylon500
    At the moment, parts will be a little hard to come by, although most parts can be fabricated by anyone with a bit of engineering know how. Rotax engines available from; http://www.bertfloodimports.com.au/contact.html Do you have any tail wheel time in GA? Not a huge deal with a drifter as it's almost not a taildragger, being fairly benign on the ground.
  14. pylon500
    Looks to be an approved Drifter with full dual controls, so yes you can learn in it (you can also put it 'on line' and have it earn it's keep). You WILL have to keep it 'under cover' at least, a hangar would be better. Drifter's are fairly easy to maintain, everything is out in the open, it is a two stroke so you will need to become aware of their operating requirements. That said, the advert does say the engine has done 865 hours(?) which would preclude it from being used in a school, as these engines only have a certified life of 300 hours. The use 'on condition' system is still a bit vague, but I dare say you will still be able to be taught in it, providing the instructor is willing to fly it. A replacement engine will set you back around the $7~8k range, but if the original motor is running OK, you could sell it for around $1~1.5k. $19900 isn't too bad, although with those engine hours, even with aircraft fitted out as well as it is, $18k is probably closer to the mark...
  15. pylon500
    The early ELT systems in GA usually had a remote activation switch on the dash, as the unit was usually installed down the rear somewhere. Not sure about PLB installs? Usually sitting in the side map pocket....?
  16. pylon500
    G'Day Geoff, haven't forgotten you, just knee deep in other projects but will get back to the Corby soon I hope...
  17. pylon500
    Looks more like a single seat canopy, Corby Starlet? Found on Google, don't know the history.
  18. pylon500
    The 'penalty Points' system is a monetary fine system that allows the value of fines to be updated (for inflation, devaluation of the Australian Paso, etc) so as to not having to keep reprinting the rules and their fines. Currently I think 1 penalty point is about $180.00. So 20 points; 20x$180=$3600.00 ! There are no 'points' on your Certificate/License, you either have it or it's suspended. Not sure if it's ever completely revoked?
  19. pylon500
    G'Day Ron, Also being a fan of the BD-5, I have most of two kits (sans drive-trains of course). As the -5 will not fit in the ultralight category, and I don't have a GA license, When I get to building on of them, it will be somewhat modified. To try and get legal area, I started looking at a delta; And it would seem some one had a go at this in the states many years ago, but I've never found any more details...; I then thought of maybe a swept forward wing; And my latest idea is based on the Multiplex 'Fun-Jet', which I've found to be a nice flying model; These would all probably use a Rotax 582 for weight reasons. Not sure if I would go to the trouble of getting a GA license just so I could build and fly a 'stock' one, but who knows..?
  20. pylon500
    Nice looking runway dead ahead at 1:09? Heat of the moment I guess..
  21. pylon500
    I think I can picture what you're going to do, I was going to go a different way back in my hang gliding days, with a high aspect rigid I wanted to build. I think some one else may have tried it already somewhere, where ailerons (only, as pitch is ok via weight) were connected to a floating lift cable system, that was then linked to the aileron belcranks. This meant that it still had the A frame 'wiggle' modern kites have, but the wiggle drove the ailerons instead of the crossbar. I later realised that this could run away with itself, so the ailerons needed to be mass balanced, and maybe even have anti-servo tabs.
  22. pylon500
    Actually, the B2 bomber is probably a bit of a red herring, as it most likely flies tail heavy with a negative pitching (normal) section, and relies on computer stability in pitch to make it flyable. It also uses drag rudders, as do most of the other 'finless' flying wings, so really they defeat their own purpose. Might as well just put a long skinny fuse out the back, and stick a tail and fin on it... But as for passive (no rudder) winglets, not a hell of a lot of effect.
  23. pylon500
    Directional stability, and the need for vertical devices for said stability is dependant on wing sweep. The more rearward sweep, the less need for vertical surfaces. Swept forward to straight flying wings need vertical surfaces, by the time you get to around 30º sweep back, no vertical surfaces are really needed, especially if there is any dihedral still present. Winglets on a swept flying wing would actually be counter-productive, unless they actually turned down. All these variations do and have existed, as well as those that technically didn't need tip fins (or winglets). And an example of a swept flying wing that probably didn't need tip fins, But as some here would say, it looked cool....
  24. pylon500
    Pretty much. I think we all discussed this back in another thread after I found some debatable comments on a NASA youtube. http://www.recreationalflying.com/threads/new-theory-on-how-planes-fly.143310/page-3
  25. pylon500
    Actually, when you look at his diagrams, what he's really come up with by trimming the lower wing surface up to join the upper surface, is an elliptical wing tip as per spitfire. Oh, hang on, the Spitfire came out before Hoerner.... In fact, the DeHavilland Rapide, Comet, Albatross even beat the spitfire. But as for winglets, I believe they can be useful, even on slower aircraft (gliders come to mind), but it is a close run thing between blending out the tip vortex via a washed out tip vs a correctly designed winglet, where you have to balance the wetted area drag used to gain the the tip vortex drag reduction...
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