Activity Stream

Activity Stream

  1. 84KF added a post in a topic Stay tuned for 912UL valve pictures.....   

    That's just it....   about 55 hrs TT since new.
    The previous owner had put about 35 hrs TT on it, and it ran great when I got it. When you pulled the prop thru by hand it had excellent compression. You could "feel" each cylinder 'pop" as it went through it's strokes.
    I have only used Shell V-Power(the 'premium) auto gas and Mobile 1 full synthetic oil. That will change now, but to what I haven't decided.
    A visual check of the valve and seat, now that they are clean, shows them to be in excellent shape, with no warping, chips, or scratches. I guess the real test will be after it is back on the cylinder.
    There is one more that needs attention also, but after seeing this one, I might just try a strong dose of Marvel Mystry Oil in the fuel before I pull that one.
    The heads affected are both the rear. Front ones feel fine.
    Attached are the pictures...not a pretty sight.

    steve




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  2. eskflyer added a post in a topic Stay tuned for 912UL valve pictures.....   

    Steve
    Out of curiosity how many hours do you have on the 912. And what fuel do you burn?. I will not ask if you use TCP, lmfao.
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  3. eskflyer added a post in a topic Just so we have something to read and comment on.....   

    I say me thinks your right Steve . And yes it is called a condition inspection . There is a big difference .


    John
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  4. 84KF added a post in a topic Just so we have something to read and comment on.....   

    Well, here is the first comment on the "other" site.

    " I use white lithium graese on mine because......."

    White lithium grease....good for tractors. Just a dirt magnet on aircraft.

    My opinion, and I'm sticking to it.
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  5. 84KF added a topic in Avidfoxflyers General Hangar   

    Just so we have something to read and comment on.....
    .....I am going to cut and paste questions from 'another' site that I have an opinion on.

    Here is a recent question....
    "I am doing my annual on my plane, and wanted to know if lubrication is required for the guide bushing? if so LPS1 or TRIFLOW. Can someone help."

    First.., it is called a "condition report", not an "annual" Proper nomenclature is important

    Second, if it moves...lube it. With what depends on how much dirt you wish to accumulate on the partspieces. Some lubricants will attract and-or hold dustdirt more than others. Items such as starter Bendix gears call for dry lubricants such as silicone spray to prevent this accumulation.

    Third, clean then re-lube. Take a look at the sticky, gummy finish that develops on control yoke shafts in a typical "real" plane. A quick wipe with mineral spirits will remove this gunk, and a light rub with lube will restore the smoothness of the shaft and it will slide as if on butter.

    So...if the bushings mentioned above are nylon, bakelite, etc..., one would do well to clean the rubbing surface, and lube with some product such as (dry) silicone or graphite to reduce future contamination. Sure, you could leave it dry and clean, but anything that reduces ANY friction is a benefit.

    But hey...I'm just an A&P. I'm sure if you ask a dentist or plumber you will get a different opinion.
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  6. 84KF added a topic in Avidfoxflyers General Hangar   

    Stay tuned for 912UL valve pictures.....
    I tracked down the problem of a lowno compression cylinder to the intake valve and seat. With the intake manifold off you could see the air bubbles when on the compression stroke. Looks totally gummed andor carbon'd over. (top side, not the face)
    Exhaust side look perfect, and clean.
      I have taken the cylinder head off and valve out and am in the process of cleaning and resurfacing.
      Pictures soon to follow. Check back soon.
    It will be more interesting then TCP and fiberglass.

    steve
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  7. akflyer added a post in a topic This pisses me off......   

    What the hell??? That looks the same as your last one..is there an update on the way they hang it to stop vibes?
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  8. eskflyer added a post in a topic This pisses me off......   

    Damn that sucks . Time for the  . Did you order from Skystar or the new Kitfox Company?. Hope you get back in the air soon.

     
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  9. 84KF added a topic in Kitfox V   

    This pisses me off......
    Less than 5 hours on a new $350+ Reinforced Muffler system for the Rotax 912S engine. (Requires return of header tubes)
    Now standard in all 912-engine component kits. http://kitfox.lazair.com/skystar/upgrades_and_performance_enhance.htm

    Engine starts smooth, runs smooth, shuts down smooth, and extra large cowl thru-hole.
    No excuse for this

    I'll wait till I cool down before I contact Skystar.....  GGRRRRRR.


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  10. 84KF added a post in a topic IVO prop IFA troubles   

    Yes... must be "pusher..., or this happens.

    http://video.google.com/videoplay?docid=-1043799803814592441
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  11. akflyer added a post in a topic IVO prop IFA troubles   

    SAFETY NOTE:  This only works with PUSHER planes..dumbass...duhhhhhh
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  12. eskflyer added a post in a topic What the heck is this ?   

    Looks just like the crap I got our of my tanks wheni bought my plane . It had been sitting in Dallas Ft Worth for 3 years not flying full of gas or should i say full of gummy used to be gas . When we steamed the tanks out there was still a residue that even MEK would not take off very easy. The tank outlet finger strainers were ruined and not cleanable . I say it is just varnish from crappy gasoline .

    Just my opinion and we all know what opinions are like .

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  13. eskflyer added a post in a topic IVO prop IFA troubles   

    Gunpowder works great for adjusting pitch of the blades on IVO . It also facilitates the takeoff performace enhancing it greatly . Makes big boom hurling aircraft skyward in vertical launch. If installed correctly you will soon have your own wings to fly with , no more worries about about fuel or prop hubs or 912 versus 660 turbo aftercooled cheaper than rotax engine .

    Gotta love it . 
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  14. akflyer added a post in a topic IVO prop IFA troubles   

    the prop stays where you last had it...If I have it set for cruise, then on take off on floats I only turn about 5100 to 5300... truley sucks..  I will be using Ground adjustable this week till the new motor gets in.
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  15. 84KF added a post in a topic IVO prop IFA troubles   

    Does the prop return to low pitch (high rpm) when the fault occures or does it stay at the setting it was at when the failure occures?
    I know nothing about the system....just wondering.

    BTW....HOGDEN's Pyrodex RS is a good powder....smokeless too. 
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  16. 84KF added a post in a topic Grove landing gear drop test   

    You might have thought I was trying if you had seen some of my early landings (attempts)
    Got it under control now though...{knock on wood.}
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  17. akflyer added a topic in Avidfoxflyers General Hangar   

    IVO prop IFA troubles
    Well inthe last two months we have lost two of the electric motors on the IFA prop.  It appears the wires that run from the brushes to the hub are rubbing on the internal bolt that runs through the motor and grounding out.  The system comes with a breaker that has never popped.  I am overnighting my motor back to IVO today and will see what they come up with.  For you guys that have the IFA, you may want to pull the spinner off and then the back plate from the motor and take a look at the wires.  You dont have to remove the prop from the plane to see what I am talking.  It may take a little gun powder to get the spinner off though....
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  18. akflyer added a post in a topic Grove landing gear drop test   

    dem sumbiches musta been watching me fly....trying to make a gear that will keep me in one piece.  Dang, that is impressive.  I bet even you cant make it flex that much! 
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  19. 84KF added a topic in Avidfoxflyers General Hangar   

    Grove landing gear drop test
    For those who doubt the advantage Grove gear, go to this linked page and select your media preference from the video menu.
    http://www.groveaircraft.com/droptest.html

    Old systems may work fine, but there have been design improvements.
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  20. 84KF added a post in a topic What the heck is this ?   

    Ok..
    My plane sat for a few years in a (good) hanger before I got it, and it  had been left with autofuel in the tank. (the owner had died) In time the gas had evaporated., no doubt leaving gum and varnish on the walls of the tanks.
      I flushed the tanks numerous times hoping to remove any loose crap from the tanks after I purchased the plane, but I've heard that the gum andor varnish will stay on the walls and bottom the tanks until fresh gas, and time, allows the stuff to dissolve and circulate in the system and then cling to certain materials andor objects.....such as the low fuel probe in the header tank.
    All this is speculation on my part, and I claim no expertiese on the actual cause.
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  21. akflyer added a post in a topic Stuck propeller spinner   

    now that is some funny shit right there!!!!


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  22. 84KF added a topic in Avidfoxflyers General Hangar   

    Stuck propeller spinner
    To remove a stuck spinner....
    Remove the boltscrew from the tip.
    Using a small funnel and small hose, fill spinner approx 1/4 to 3/4 full with gun powder.
    Insert a small firecracker into the hole leaving the fuse exposed.
    Light fuse.
    Run, at a right angle to the longitudinal axis of the airframe.

    Problem solved.

    Note: Gunpowder is not FAA approved, therefor use only on experimental a/c.
    For FAA certificated a/c, substitution with 100 LL avaition gas instead of gunpowder MIGHT be acceptable.
    In the case of extream spinner siezure, perhaps a combination of both will facilitate the removal of same.
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  23. akflyer added a post in a topic Builders reference.... and it's free.   

    ok that what I was thinkin I should do, I just wanted a strangers opinion on how to save my ass for sure!

    Thanks advise guy....


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  24. 84KF added a post in a topic Builders reference.... and it's free.   

    Dear Leni,
      Superglue the bolt to the airframe and tack-weld the nut to the bolt, then anneal the aft end of the fuselage with a oxy torch.
    A coat hanger works great for a welding rod too.
    That's the way I always do it.
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  25. 84KF added a post in a topic may be another power plant in the works.. this one 4 stroke..   

    Yeah but the rotax 912 is tried and true and aircraft specific blah blah blah..
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