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rgmwa

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  • Aircraft
    Vans RV-12
  • Location
    Perth
  • Country
    Australia

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  1. I wonder how much their insurance premiums were?
  2. If you attach the adaptor at right angles to the torque wrench there is no need to adjust the recommended torque.
  3. You may want to consider White Gum Airpark east of York. YWGM Airpark - YWGM WWW.YWGM.COM.AU AIrcraft Hangar & Accommodation Units
  4. I thought he'd found Barnaby.
  5. The option for adding more fuel exists. As I read it, all they are saying is keep everything within the weight (and balance) limits.
  6. I think they mean make sure the total weight doesn't exceed 600 kg MTOW (for LSA), but obviously also keep the C of G within the acceptable range. They could have worded it better.
  7. The square bottle on my 912 just has a small hole in the cap with moulded filler marks as Skippy said. Why do you need an overflow tube?
  8. Sounds like a bargain. What would you have bought?
  9. Found this: 185 kts using a 65hp Rotax 582 is pretty good.
  10. Just out of interest, these are the various wind speed regions for Australia: If you're in coastal Northern Qld, you'll be in Region C (cyclonic). The number after the letters (eg A0-A5) denotes different wind speeds coming from different directions for each region, and can be used to fine tune a design. The typical basic design wind speeds in each region are: A 45m/sec (162 km/hr) B 57m/sec (205 km/hr) C 66m/sec (238 km/hr) D 80m/sec (288 km/hr)
  11. Maybe, but then they would more likely have said travel speed, not wind speed. Here's the reference: Abstract An extensive census and sampling program conducted in semiarid north-west New South Wales, Australia, has provided quantitative information on willy-willy (dust devils) characteristics and their environmental range. The observation of 557 willy-willies, made over a 20 day census period in summer, indicates that willy-willy frequency varies according to local meteorological conditions. An air temperature lapse rate, measured between 12 and 252 cm of the surface, of 0.9 °C m−1 was required for the initiation of the willy-willies, with their frequency increasing with lapse rate away from the surface. Willy-willies were also found to be restricted to wind speeds between 1.5 and 7.5 m s−1. Analysis of the spatial distribution of willy-willy initiation sites with respect to vegetation cover in the 35 km2 study area showed that willy–willy frequency increases with decreasing surface cover. The increased frequency of willy-willies with decreasing vegetation, could, over time, make willy-willies a potent mechanism in the evolution of the Australian landscape.
  12. Correct. That's why engineering firms carry Professional Indemnity Insurance. A study of willy-willies in NSW (557 willy willies sampled over 20 days) found they had wind speeds between 1.5m/sec and 7.5m/sec or (5km/hr to 27 km/hr). Seems a bit low to me, but that's what they said.
  13. No they can't, unless you bought a kit designed for Victoria or Tasmania and decided to put in on your block in Port Hedland.
  14. They do have some tension rod diagonal bracing in the roof and may also have it in the end bay side walls. They have also braced the unsupported rafter and column flanges back to the purlins and girts to resist buckling. I don't like the look of the portal connections much, but they may be OK. Other cold-formed structures I've seen used back to back C-sections bolted together with central gusset plates and spacers, and used bolts instead of Tek screws, but there are many ways to skin a cat. Cold formed structure design is pretty specialised and the design calculations can become very complex because the components are so thin and secondary effects such as small eccentricities in the structure become very important. It's pretty tedious and long-winded to do it by hand and you really need computer software written by experts, but then of course, it can be a case of garbage in, garbage out.
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