pylon500
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Everything posted by pylon500
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Thought it would have been more charges than just that.
pylon500 replied to a topic in AUS/NZ General Discussion
Do you know something about the spars I don't? The stub sticking out of the fuselage IS the spar. This aircraft follows a lot of the Jim Bede designs having tube spars in the wing panels, which slide over a heavy tube spar carry through in the fuselage. The little Grummans (Yankee Trainer, Cheetah, Tiger, etc) use the same system, mainly because they were derived from the BD-1
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Thought it would have been more charges than just that.
pylon500 replied to a topic in AUS/NZ General Discussion
Wonder if he gave hand signals? Guess he only turned left... -
Something new and exciting at last!
pylon500 replied to Aussie Steve's topic in AUS/NZ General Discussion
While I'm still positive that is fuel venting from the tips, the fact that the inboard tip started venting first, was a bit of a head scratcher? Can only assume that, in the act of stalling and dropping that wing, enough fuel fell to the tip to start a syphon action before any real centrifugal force had built up? Could also be that he just had an unbalanced fuel load. -
Something new and exciting at last!
pylon500 replied to Aussie Steve's topic in AUS/NZ General Discussion
I'm surprised when I find counter discussions on topics that are so blatantly obvious... The aeroplane may not be Rolling around it's axis, but it is YAWING around it's centre of gravity. This is applying a centrifugal force at all four extremities, that gains intensity as you move away from the centre in the four directions. The aircraft probably has wet wing tanks along most of their span, add that to a reasonable amount of dihedral, and it is possible to have fuel sitting in the root area (keeping the engine running), as well as fuel travelling towards the tips and exiting via the vents. The three points they are testing/making here are; 1. largish fuel load in a spin not having a serious affect on yawing momentum, which would delay recovery, 2. With four passengers on board, the aircraft is possibly closer to it's rearward CofG, which would delay recovery, 3. The four occupants are reasonably spread fore and aft which can also add to the yawing moment, as well as giving a tendency for the spin to go flat, which could put the aircraft into a deep stall situation, often very hard to recover from. Looks like the high aspect wings and long tail moment have added to the overall stability of the plane. ps, Yes, it's fuel...... -
Depending on how you interpret "went on to build", from a historical point of view, it actually happened the other way around. A quote from a Kitfox company release says; The company had its roots in the 1980s, when Dan Denney (the “idea and marketing guy”) teamed up with Dean Wilson (the “designer and airplane guy”) at Light Aero (later called Avid Aircraft), in Boise (later, nearby Caldwell), Idaho. Under circumstances mercifully lost to history, Denney left Light Aero and started his own company, Denney Aerocraft, making what was originally a near-clone of the Avid Flyer, introduced as the “Kitfox.” This can be read at; http://www.kitfoxaircraft.com/images/pdf/ultraflight_mag_article.pdf
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Might be interesting to point out that the ORIGINAL aircraft was the AVID FLYER.... Yes, for the detail junkies, this is a MkII 'Speedwing'.
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The wing looks to have been intact at impact, and not very fast. No good picture of the overall wreckage spread, but I feel it is all fairly localised, adding to the slow impact thought. The wreckage spread could indicate a spinning (stalled) impact, with centrifugal forces spreading the wreckage. Extremities and heavy items would travel the farthest, nose, tail, engines. Interesting clue is the broken off (but attached) fin. Could this be a repeat of the American Airlines Airbus crash, where the pilots overloaded the fin, breaking it off, whereupon the aircraft spun into the ground.....?
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Are you thinking of Moses?
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For their power output, the 503's are reasonably light, you may find the Kawasaki not a great deal lighter than the 503 when compared to the KFM's, 277's and 337's used originally... Do you have any pictures of your machine?
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I've often thought an armrest would be a good idea in the 'Bat. I myself can get away with it by resting my arm on my knee, but I notice skinny, and/or shorter people having to reach for the stick, and usually resort to grabbing the stick around the base on long trips. A stick (each) between your knees feels good, but after instructing in a Gazelle for a while, it's a pain getting in and out, trying to get your leg around the stick (once again as a taller person). The Y stick is a good compromise.
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You may find that once you change gears and get some load on the prop, you'll probably need to drop the needles again...
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If you have a single EGT probe at the Y junction, it is probably too far away from the port for a correct reading (would read low), so you need to raise the needles (circlip towards the pointy end) If your prop is not absorbing the power, that will also give you a tendency to run hot, is it two or three blade? Do you still have the original 447?, it should have had a 2.21:1 box. It should go onto the 503..
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If running a twin carb two stroke, you really need a dual EGT to see what's happening. A two stroke MUST have an EGT, it's as important as an oil pressure gauge on a four stroke. Also check that the carbi's move the same.. If the aircraft feels a bit sensitive than last time, have you lost weight? Are you the same weight with a now heavier engine? I know many sapphires with lead in the nose... Stick extension may work, but it's more likely an underlying warning of something else out of whack.
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And this thread drift is fixing the RAAus website how exactly?
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What, FT has a partner?
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"Oh toss!, my bolour supplement just flew out the window." < very silly walk!!
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Just had another attempt at the RAAus site, no luck with Safari (I'm on a Mac), and only a very basic page (no pictures) with Firefox. Had an email from Apple today offering to upgrade my Operating System to the latest OS10.11.1, but will wait till I've spoken to my Mac guru to see if it's a good idea....
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Sort of figured that's what you meant.... (no I can't edit it for you) The A-32 is supposed to have the option of a Y stick, which I prefer from experience with the A-22L. The throttle position in the Y stick A-22 is not a problem getting out, more a problem getting in, and then forgetting to check it's position before starting. That said, most students do it at least once, and after the flurry of throttling, steering and breaking, they tend not to do it again. Note to Instructors; always make sure student/Foxbats are aimed towards a clear area! As for deal breaker, I can't see why a yolk version couldn't be arranged to have three throttles, one each side and one in the middle? Solves all problems (although as said, I prefer the feel of the stick over yolk).
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Fitting a simple trim tab may help a little although what's really needed is an adjustable 'Anti-Servo' tab to give better feel and stability. The 'Stock' Sapphires I have flown usually have a tendency to pitch down in cruise if left 'stick free'. There are various stories of people losing items from the (open) cockpit after such 'bunts'. An anti-servo tab will cure this problem.
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Was talking to Peter Harlow last week, he could see the interest coming and put in an order for five ASAP, has two left !! Time to order more....
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Hey, thanks for that, it actually worked, all the way from the home page to the .pdf forms page. Yes, the forms have been changed, wonder if they will knock back submitting old forms?
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Thanks for the offer, I have a BFR booked for tomorrow, but I think I've got a blank form. My point was that the site isn't loading (for me) either with my original bookmark, or the links in the emails I've had from the office. I'm assuming that the new site is using the original web address [https://www.raa.asn.au/]. Can't even find a backdoor via google.... OK, think I've found the problem, this is a NEW site, and no-one has thought to make it backward compatible.. I can't update the operating system on the Mac I'm using, and the Safari browser I use often gets "Your browser is out of date", mainly from the flash players. Just loaded via Firefox, and (more or less) got the site (no colours?) Gonna have to get a new Mac soon... ps, Looks like they've changed the form again..
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I'm surprised there hasn't been an update to the charts..........
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21:25 Friday, and I'm not getting either the old page or the new one, has it crashed? Bit annoying if I want some forms for tomorrow...
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Meanwhile, back at the 'Firewall forward' thread, there is a Rotax Service agent, with manufacturing capability, that has done one conversion with another coming. This was a J230 fitted with a standard 912ULs and 3 blade Sensenich ground adjustable prop. Depending on pitch setting, cruise speed is similar or could be a little faster, but the real improvement is awesome climb rate and about 15% better fuel economy. Wasn't game to ask the conversion price, but the customer was quite happy.
