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About Turbo

  • Rank
    Advanced Member
  • Birthday 05/07/1945

Contact Methods

  • ICQ rthrpwll@gmail.com

Profile Information

  • Gender Male
  • Location Columbia Gorge, WA
  • Interests Avid model C, windsurfing, hunting

Turbo's Activity

  1. Turbo added a post in a topic Compression numbers ?   

    O.K., so what to do if you have the pull-starter?  Hard to get a consistent compression value if you can't crank at a consistent rpm.  Facing my first conditional with a guy who doesn't have experience with 2-strokes.  Hopefully demonstrating 6200 rpm static full throttle will do, along with appropriate temps.
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  2. Turbo added a post in a topic Folding wings an Avid idea?   

    Nice 2-1/2-cell sesquiplane design.  Spars can be quite minimal as they don't really have to support much bending.  Optimal airfoil thickness for fabric-covered wings (no laminar flow) is around 13%, though, which of course favors monoplanes where you can take advantage of deeper spars.
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  3. Turbo added a post in a topic Curious fawns   

    OOOPS!  Hundreds of MILLIONS of years!
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  4. Turbo added a post in a topic Curious fawns   

    Adorable baby bird.  Those guys put us human fliers to shame though!  Hundreds of years of evolution compared to only 115 for us as fliers.  I am awed with what birds routinely pull off.
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  5. Turbo added a post in a topic Ever wonder what it's like to...   

    Hey Joey,
    Is it true that B-1 drivers always have a dirty windscreen from fuel splatter upon disconnect?  Aerial refueling is so cool, and I'll bet the receivers appreciate that KC-10 with its bigger extension range, envelope, and fuel flow, over the antiquated KC-135!  The big guys just need to keep their T-shaped tailfeathers out of #2's exhaust plume!  The KC-45 will solve that problem (or will it, with the 767's wing engines so close together?).  We, McDonnell Douglas Boeing, had an internal hu-hu with the Boeing Wichita folks, who wanted to warm over the -135 boom for the KC-45.  I got dragged into the early phases of that design activity.  But there was no saving a bad, 1st-gen design!  We almost lost the tanker to Aerbus!  Fortunately, that KC-45 now sport a modified KC-10 boom,  and on some versions 3 (count 'em 3) hose drogues!  3 times the fun!  Anyway, thanks for what you do, and enjoy your "retirement"!
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  6. Turbo added a post in a topic Leaning the carbs for altitude - on the cheap   

    Good question.  Since the oil is ostensibly less atomized with the OI system, maybe it won't be any worse.  Same relative motion, same friction, same temperatures, same lubrication. Sounds right to me.  Beats hell out of potentially under-lubricating the engine.  What say y'all with leaned, high-altitude time running premix?
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  7. Turbo added a post in a topic Leaning the carbs for altitude - on the cheap   

    Rfphtmfxr, I agree with you in that there is a difference between OI and premix wrt leaning. With premix, less fuel means less lubrication when leaned out at altitude despite essentially the same cruise rpm, whereas with the oil injection you should be getting the same oil flow at all altitudes.  I think this is an advantage for the OI system over reverting to premix.
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  8. Turbo added a post in a topic Leaning the carbs for altitude - on the cheap   

    My mistake!  I did originally mention a direct-leaning approach.  Cowlove's point regarding same is taken.  
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  9. Turbo added a post in a topic Leaning the carbs for altitude - on the cheap   

    Cowlove, I like your solution!   BTW, we were t alking about a float bowl vacuum leaning system; that's what the hacman system is, but based on the carb throat as the vacuum source.  Where did you find the vacuum pump?
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  10. Turbo added a post in a topic Leaning the carbs for altitude - on the cheap   

    My understanding is that the OI system responds to two things only: throttle slide position and engine rpm.  How rich or lean your air/fuel mixture is should not affect engine oiling.  It seems to me that you're good to go.  Of course, you'll be watching EGT and coolant temp. - Turbo
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  11. Turbo added a post in a topic Fabric touch-up   

    Contrary to the standard wisdom, there apparently is such a thing as a too-dumb question.  Well, I went for it anyway.  The result, while practical, isn't pretty.  Mine's not a show-bird, and I'm a pragmatist.  The magic, it's ability to fly, is unaffected.  Superstition likely would suggest that a fancy paint job is a groundloop invitation anyway, and who wants that?
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  12. Turbo added a post in a topic Blocking off the Oil Injector 582   

    Shockaroo!  No plastic gear behind the panel/flange.  Lots of 2-stroke oil escaped when I cracked it open, indicating that a few squirts of same when installing the gear and pump will be in order. Looks like I'll be running premix for now.  Hey Vance, does your offer still stand? Might that include the plastic drive gear?  I'm game enough to make a road trip out of picking the parts up in Post Falls; that way I get to meet you in person!  Just a short trip from the gorge.
    I'm moving closer to a condition inspection then first flight.  Exciting times!
    Best regards to all,  Art
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  13. Turbo added a topic in Technical tasks   

    Fabric touch-up
    Hey y'all, my bird has the classic butyrate dope-with-aluminum-powder finish, but time and chance have taken their toll, and I see a couple of spots where touch-up would be highly desirable.  One is on the top of the wing, where some kind of solvent spill has lessened he UV protection in one local area.  Others just look like the typical hangar rash.  So is touch-up with a soft artist's paintbrush feasible?  I don't have any of the equipment needed for spraying, and to me this would feel like gross overkill.  I've got a quart of Rand-o-fill and a quart of thinner.  Should I just go for it?
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  14. Turbo added a post in a topic Blocking off the Oil Injector 582   

    O.K., so new question:  I'd like to take the oil pump off so I can inspect and test it.  That includes the plastic drive gear.  I hear there's a second cover plate that comes off so the gear can be removed.  If I take this off, am I going to affect the rotary valve and its lubrication?  I have no idea how the rotary valve lubrication works, but I understand the layout.  I don't want to end up having to take the engine off so I can refill the rotary valve's oil tank and lines without leaving a fatal air bubble in the line.  The Avid's engine is plugs-down.  Thanks in advance, guys!
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  15. Turbo added a post in a topic Blocking off the Oil Injector 582   

    Thanks, NLappos, but I have a good oil tank.  Actually I have two of them, but only one appears to fit easily in between the frame tubes.  This is weird, since they look identical.  Man, is everything a tight fit in these birds!
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