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Jabiru7252

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Everything posted by Jabiru7252

  1. Jabiru7252
    Click your icon (top left of screen) then select 'Manage Followed Content' then find the topic you want to not follow, select change preference, click 'Do not send me any notifications.
  2. Jabiru7252
    Well, if we didn't learn the 'crap' we'd still believe that magic was the reason most things beyond our understanding actually happen. And, we'd still be living in caves and grunting.
  3. Jabiru7252
    Oh dear.....☹️
  4. Jabiru7252
    The LEDS are actually flashing and it's the circuit that does this that causes the interference. So, if you know the flash rate, build a simple PI filter to suit. Maybe a Spec analyzer picture with the led light off and a pic with the led on on would be good to compare the two. Something I might play with just to 'refresh' my fast fading electronics knowledge.
  5. Jabiru7252
  6. Jabiru7252
    Apart from the drive to the airstrip, playing with fuel is probably one of the most dangerous things we can do.
  7. Jabiru7252
    The lathe had sat in the weather for 20 years! Everything was coated in rust. The results were quite surprising. Can't find the pictures :-(
  8. Jabiru7252
    I wonder if electrolysis could be used to clean engine bits and pieces. I saw cogs from an old lathe that were in terrible condition come up really well when electrolysis was employed.
  9. Jabiru7252
    I had a friend who couldn't do better than grade seven math and English but he could thread a needle with a backhoe...
  10. Jabiru7252
    starts in games, ends in tears...
  11. Jabiru7252
    Aluminum is nowhere near a good conductor as copper (about 60%) but is lighter. That's the only reason (and a poor one) I could see for using it in electrics in a plane.
  12. Jabiru7252
    Many thermistors have slow response times, lag times between 15 seconds and a few minutes. A semiconductor junction is faster than a resistor and I'd be surprised if the sensors are in fact 'straight resistors'. The smaller the mass of the sensor the faster the response (all other stuff being equal). Lot's of info on google...
  13. Jabiru7252
    It oils in the wood (not water) that will apparently drain (due to gravity) to the lower end of the prop if it's left vertical for a long time. But, like Thruster88 says, surely the very high G's experienced by the spinning prop would very quickly throw out the oils etc. Too much to learn, so little time...
  14. Jabiru7252
    This is online http://docshare01.docshare.tips/files/3422/34223648.pdf but not Australian. Some might find it interesting.
  15. Jabiru7252
    Well, going by the electronics junk coming out of China, I'd find it hard to trust their airplane engines. Poor quality materials, parts driven beyond their specs. Shortcuts to keep costs down. It's scary and dangerous, people have been killed using cheap Chinese crap.
  16. Jabiru7252
    She didn't say 😞
  17. Jabiru7252
    I'm immeasurably clever (mum had me tested) and find physics etc. no great challenge. I did work for twenty years in a physics environment. It's just that some poor sod may think they are dumb for not knowing the deep stuff when in fact it's not even in the BAK syllabus. (I'll assume you did BAK for GA license). As a pilot just knowing what form drag, parasitic drag and being drag is all that's really needed. I do learn heaps reading the posts on this forum.
  18. Jabiru7252
    It's all magic folks. Don't need to know this stuff to be a good pilot. Just the basics will do.
  19. Jabiru7252
    Remember learning this back when I did air and water balancing. Turbulent flow in airconditioning ducts could not only cause damage over time, but cause low frequency oscillations that drove people bonkers.
  20. Jabiru7252
    What worries me is the amount of solar panels going up. Drawing all that energy from the sun is going decrease its life span and then we'll all be up the creek.
  21. Jabiru7252
    Was the sun at the same angle during both flights? Lower in the sky will have a much lower heating effect (follows some cosine law). What about grass, greener in Oct then Feb?
  22. Jabiru7252
    I read that planes built for the war weren't built to last because they were expected to get shot out of the sky. There are a lot of 'fairytales' when it comes to war stories I'm sure.
  23. Jabiru7252
    Maybe it's like CB radio. Some simple minded folks find it funny to annoy folks who cannot give them a good slap. Some people think trolling is an internet thing, but it's been around since the first radio signals went out...
  24. Jabiru7252
    There are devices that will record G forces and turn rates that don't cost a fortune. A bloke I worked with had one on his model aircraft.
  25. Jabiru7252
    Nah, set his face on fire then put it out with a shovel...
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