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  1. Z

    Extended Oil Changes - 100 Hours

    Honestly the appearance of the oil doesn't mean much. I have got labs on oil that looked clean that would make me hesitant to run the oil in a weedeater. I have also gotten results that were great on oil that looked black like asphalt.
  2. Z

    When a P-lead breaks on your magneto...

    I usually say other stuff in as many languages as I can think of. Sent from my SM-N960U using Tapatalk
  3. Z

    Post lights on panel intermittent

    I don't know what aircraft you have, but on a lot of 152s and older 172s, the wiring for the post lights is glued into crevices on the back side of the plastic face of the panel. Some times the wires can work loose from the sockets. Pain in the ass to get back together. Not as hard as getting...
  4. Z

    "I'm not gonna lie..."

    Another one that makes my toenails bleed is "Fambam" for "Family". Sent from my SM-N960U using Tapatalk
  5. Z

    "I'm not gonna lie..."

    How about when you solicit an opinion, and the dude starts out the response with "Honestly?....I think that...." Well, I am glad you started with that...I was afraid you were about to blow smoke up my ass. Sent from my SM-N960U using Tapatalk
  6. Z

    Flew over a famous runway today

    I didn't mean literally like a bowling ball, but just putting it to paper. At 300kts per the plate that would take an average of about a 6500fpm decent to not overshoot the threshold. And that is while they are scrubbing off speed in the turn. Its gotta be about a 10k fpm decent from 35000 to...
  7. Z

    Flew over a famous runway today

    That's what, 35K feet in 16NM? That bastard was coming down like a bowling ball. Sent from my SM-N960U using Tapatalk
  8. Z

    Is a four year degree still mandatory

    A CDL isn't bad to have. You can always find a job if you need to. I am working for a pipeline company now making nearly 100k and a don't really put in that many hours. 50 to 60 is a long week and during that week I sit around a lot watching movies and playing games on my phone. Sent from my...
  9. Z

    Guy hit and killed by prop

    I know that too, but the original conversation was why vacuum vs pressure. Complexity and weight was one issue and nearly direct conversion from venturi driven system was as well. Sent from my LG-LS997 using Tapatalk
  10. Z

    Guy hit and killed by prop

    That too, I was thinking of more immediate effects, where a positive pressure air pump were to fail and send trash into the instruments at time of failure. So then you would be potentially replacing not just the pump and filters, but a couple intruments as well. Sent from my LG-LS997 using Tapatalk
  11. Z

    Guy hit and killed by prop

    I think one of the biggest reasons to use vacuum vs positive pressure is that its easier to filter out contaminants being drawn into the system than it would be for a filter to catch trash should the pump **** the bed. Vac pumps do take a dump every now and then, but all the sensitive junk is...
  12. Z

    $800 for a flight review

    Around here, (KRVS) I typically give 153 or 156 per hour for a G1000. The 156 isnt for an early g1000 either. It is a maybe two year old plane. It was a 2014 Cessna factory demo plane. Sent from my LG-LS997 using Tapatalk
  13. Z

    Another Pandoria's box

    Yes the rotax does make somewhere in the same neighborhood hp wise...but the issue I have with it is that is not direct drive, and unless you have official blessing from Rotax, there is not a lot you can do to it. It is known as a fairly reliable engine, but for the cost, I would just go with an...
  14. Z

    Another Pandoria's box

    There is an auto engine that is roughly in that class output wise. The subaru EA81. Only thing is it cannot make much power at low RPM and thus needs a reduction drive. Also it's a liquid cooled engine and brings with it another pile of complications. Not saying liquid cooling is bad. Just that...
  15. Z

    Another Pandoria's box

    Possibly, but then the loss in output would negate the weight savings. Sent from my LG-LS997 using Tapatalk
  16. Z

    Another Pandoria's box

    There are several fairly successful auto conversions running in airplanes. One of the more prominent is the corvair. For a very reasonable cost you can have an engine roughly equivalent to an 0-200 or O-235. Direct drive runs from 2300 to 3000 RPM all day long, depending on the prop. There have...
  17. Z

    Another Pandoria's box

    I knew it was something like that, I consciously choose to not remember tolerances verbatim. Forces me to look **** up per job. Sometimes some random engineer has an idea and stuff just gets changed.... Sent from my LG-LS997 using Tapatalk
  18. Z

    Another Pandoria's box

    From what I remember, kinda. Chamfer may be a more useful term. Like I said before, all these parts arent necessarily a tight fit, and if you are real finicky about .0005 tolerances, it will bother you. There are a few places like this, but mainly when assembling things like planetary gears...
  19. Z

    Another Pandoria's box

    http://2.bp.blogspot.com/-cuY3D9LEjW4/U6ZQtcTpHPI/AAAAAAAACTU/Xxf_M5m6-Wk/s1600/A+connecting+rod+between+the+piston+and+crankshaft.jpg Sent from my LG-LS997 using Tapatalk This is a picture of a cutaway engine (training aid) but you get the idea.
  20. Z

    Another Pandoria's box

    You can do that in auto engines because the crank is not subjected to bending due to having a bigass propeller bolted to the end. As the aircraft pitches up or down the prop resists this movement, and attempts to keep moving within the orginal plane of rotation. This induces a bending moment on...
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