Activity Stream

Activity Stream



  1. dholly added a post in a topic MANUVERING SPEEDS   

    Yeah, it was late when I saw that, and I had to rub my eyes a couple times before my brain went that ain't right!

    Now, I want to know what the red and blue lines within the White Arc on the other pic above represent...
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  2. dholly added a post in a topic AeroShell Sport Plus 4   

    No, not regularly, just covering my a** for when away from my u-haul-'em cans. My 912s has used AeroShell Sport Plus 4 since new, which I intend to continue, but I don't mind switching my 912 from Mobile 1 Racing 4T and paying a bit more if it protects from 100LL better or extends the oil change intervals. Not sure what Kitfox charges for the oil delivered (didn't see it in the online catalog, need to call), but I saw SkyGeek has it for $96 + shipping. Last year I ordered a 16oz. bottle of RunUp additive direct from Decalin Chemicals and either they were out temporarily or goofed because they sent me a large 32oz. bottle for the lower price. Good thing it never goes bad because that will probably last forever!
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  3. Av8r3400 added a post in a topic AeroShell Sport Plus 4   

    Are you needing to run 100LL, Doug?
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  4. John_L_Seagull added a post in a topic MANUVERING SPEEDS   


    Glad you noticed that lol
    old pic from when I bought the plane,and it was late when posting
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  5. dholly added a topic in Avidfoxflyers General Hangar   

    AeroShell Sport Plus 4
    I'm going to switch to this stuff on my next 912 oil change. If you use it, where's the best place to buy cases?
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    • 2,816 views


  6. dholly added a post in a topic MANUVERING SPEEDS   

    Your normal and caution speed arcs are looking a little goofy to me.
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  7. EDMO added a post in a topic Spar supports ?   

    My early Magnum manual shows 3 pieces of .090 ALUMINUM, 2 FEET LONG, riveted to form a "T", for the stiffener.
    At first glance, I said, "500 MTOW shouldn't need stiffeners", but after thinking of the gust loads being greater stress on the ultralites than heavier planes, (Back to Barnaby Wainfain article on maneuvering speeds), then the inserts might be needed more on the lighter plane than the others?
    However, I agree with Doug - if others haven't broke, then you are probably safe without them
    Ed in MO
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  8. Tree top pilot added a post in a topic Spar supports ?   

    Thanks !!! I just couldn't leave the end rib as a finished product. Plus it will get me more effective wingspan. Not a bad bargain at a 1 ld. addition. One more for the going at it...I have made my trim tab on the elevator and have options at this point I think. A good cable or other means of deflecting it? I did weld tabs on it for a cable....but have heard they tend to break quite often. This is planned to be no electrics...with exception of the handheld TX/RX. I would like to be able to trim the stick off and have the backup of it.
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  9. dholly added a post in a topic Spar supports ?   

    Just to clarify, the Avid Flyer models did not employ aluminum extruded spars or separate aluminum spar stiffener extrusions within the spars. They used plywood stiffeners, as did the first Avid Magnums. Later higher gross versions of the Magnum did go to the extruded stiffeners slid into the spar tubes. If you are interested, I put all the stiffener history in a thread title 'MTOW Modification' (or something to that effect) in the Fat Avid forum.

    If your kit manufacturer does not require them and there are no reports of Ridge Runners falling out of the sky with bent spars, I sure wouldn't lose much sleep over the lack of stiffeners in your kit. If it bothers you, and you want to do something cheap, light and effective, just make up a set of ply spar stiffeners. The Avid Mk-IV uses 1/4" x 16" ply stiffeners, and my Avid+ came with 1/4" x 18" ply stiffeners. If you read through the above-mentioned thread, you will see that I started to make up some customized spar stiffeners for my Avid+ wings. I ultimately decided they were unnecessarily heavy and just added hardwood 'shoe molding' to the supplied 1/4" x 18" ply stiffeners. The original 1/4" x 18" Avid+ ply spar stiffeners weighed 4.2ozs each, my new stiffeners weighed 10.3ozs. each, for a total weight penalty of ~1-1/2lbs. total. I also added ply gussets between the drag and spar tubes and, while not shown in the pics, used any leftover Hysol as it became available to coat the gussets. Attached pics show all.
    P.S. - I like the wingtips, reminds me of the Stewart STC tips for the clip wing pipers.



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  10. Tree top pilot added a topic in Avidfoxflyers General Hangar   

    Spar supports ?
    I am nearing completion of both wings and fuse for the Ridge runner...making ready for the covering chores soon. I think I have asked this question prior to this post , but however I would like to get some opinions before I start adding weight.....unjustly. I know the Just aircraft wing spars as well as the Avid and Kitfox designs employ a length of extrusion to support the spars at the lift strut attach point to spread the load. My spars are 2 1/2" X .065" wall and are 141" long. Lift strut attach point at around 80" from root. Plans do not call for anything of the likes....MTOW will be very near 500 lds. I am not sure if the early single place Skyraider used anything either. Comments welcomed.
    Pic is of my wingtip set-up....very light.

    • 6 replies
    • 1,754 views


  11. High Country added a topic in Avidfoxflyers General Hangar   

    Cowl / Firewall questions
    So I'm working on fitting up my firewall and cowl and have come up with a few questions. First I see on Leni's pics the firewall is flat on mine it has several bends (see pics)I was thinking I could make the bottom bend be more forward giving more leg room but to do this I would have to cut out the bottom of the cowl to rotate the exhaust forward. I can't find anything that would be a problem doing this. I have a new sheet of stainless to make a new firewall with. next is where to put my radiator(s) I don't like the original design of hanging it out the side. Is it better to do the two side by side in front or single down low? any pics of both of these being mounted and plumbed in would be great. how exactly was the cowling different on the C vs B models. I have the two piece that splits L and R, I was thinking of attaching them together and cutting it in half on the sides so as to eliminate the ugly seam on top. what would be my best method of doing this, also would it be beneficial to cut the back off and make the back portion into a boot cowl? I'm not really sure why everyone has gone to the boot cowl design, seems to me that by removing it all in just two pieces gives you better access to behind the instrument panel. and lastly (for now) seeing as i have a very tight area to work with what would be the best master cylinders to use i was thinking the Matco MC-4D, yes-no?

    -Robert-


    -sorry for the big pics I can't seem to figure out how to make them smaller-



    • 6 replies
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  12. Av8r3400 added a post in a topic Classic IV Restoration   

    That's in the works, too...
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  13. Av8r_Sed added a post in a topic Classic IV Restoration   

    Weren't you going to lend the fuselage to Brett so he could make up a repair jig for other Model IV's?

    -- Paul S


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  14. Av8r3400 added a post in a topic Classic IV Restoration   

    I cleaned the dust off it the other day...
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  15. dholly added a post in a topic Classic IV Restoration   

    Progress report please!
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  16. EDMO added a post in a topic LEADING EDGE EXTENSIONS   

    In case someone missed it on another post: I am adding 1mm (3/64) plywood, 12 inches on top, and 6 inches on bottom of new LE so that I will have a platform for VGs later on after flight-testing.
    Ed IN MO
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  17. EDMO added a post in a topic LEADING EDGE EXTENSIONS   

    CRAWFISH BOIL? Amost missed that! Y'all some of my Coon-ass cousins? HA! Mama was Cajun - Daddy English, so I'm a half-breed, raised in the swamps.
    ED in MO
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  18. EDMO added a post in a topic Model 7 Kitfox   


    I have my doubts about the heavy Kitfox 0-200, landing shorter than the 150 if both are at same weight: Those big, 40 degree flaps really slow down the 150. That's why mine will have flaps and not flaperons - but most importantly, better roll control with ailerons and flaps for those Kansas crosswinds we seem to get a lot.
    I was once told by an old pilot that the Kansas windspeed indicator is a 6 foot log chain nailed to a stump: If the end of the chain is even with the top of the stump, then it is too windy to fly!!!
    Ed in MO
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  19. EDMO added a post in a topic Traveling to Alaska   

    Sorry to hear that anyone is leaving Alaska. I certainly left part of me there, but circumstances prevail for each of us.
    Flying down here is about as exciting as catching "bait fish" here after filling the freezer with Salmon and Halibut in Alaska.
    I buy smoked Alaskan salmon at Costco, when they have it. Atlantic salmon is yucky, compared to Alaskan Sockeye.
    Just go from concrete runway to concrete runway, and once in a while to a private dirt strip if invited.
    Quit hunting too - nothing big enough or dangerous enough to shoot here.
    Do you know where Dave is relocating? What company did you/he work for? Oil/Gas?
    Give Dave my best wishes if you see him again.
    Ed In MO
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  20. EDMO added a post in a topic MANUVERING SPEEDS   

    Good photo and description. I will go check my factory KF2 ASI and see how they marked it to compare with Maneuvering speed listed.
    When I mark my new ASI, the yellow will start at 80 - my conservative estimate of a "slow-down and don't break it" speed for my plane.
    Ed in MO
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  21. akflyerbob added a post in a topic Traveling to Alaska   

    Ran into Dave the other day at a retirement lunch
    he and I retired from the same company.
    All his stuff is for sale, he's going south perminent.
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  22. akflyerbob added a post in a topic Model 7 Kitfox   

    There is a large difference between summer and winter preformance in
    my mod 1, 582, but it will beat thoes numbers, even in summer.
    When we did the W/B it was 518 lbs. I carry 19 gal gas.
    I have bare min vfr stuff

    Probably not the turbo
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  23. John_L_Seagull added a post in a topic MANUVERING SPEEDS   

    Hi

    The start of the yellow Arc
    would be the end of normal operating Range of Speed and the start of the caution Range of Speed


    Green Arc: Normal Operating Range

    The green arc shows the normal operating range of the airplane.
    The speed at the bottom of the green arc, abbreviated Vs1, is the stall speed with the flaps and landing gear retracted, power at idle,
    and the airplane at maximum gross weight.

    The top of the green arc shows the high end of the normal operating range,
    the maximum structural cruising speed, abbreviated Vno.

    Yellow Arc: Caution Range

    The yellow arc represents the caution range—speeds appropriate only in smooth air.
    The top of the yellow arc coincides with Vne, the never-exceed speed of the airplane.

    Red Line: Never-Exceed Speed

    A red line near the top of the airspeed range marks Vne.
    Exceeding this speed even in smooth air could damage the airplane structure.

    White Arc: Flap Operating Range

    The white arc shows the range of speeds in which it's safe to extend full flaps.
    The upper limit of the white arc is called Vfe, maximum flap extended speed.
    Extending the flaps at higher speeds could cause structural damage.

    The lower limit of the white arc, abbreviated Vso,
    is the stalling speed or minimum steady flight speed at maximum gross weight with the flaps and landing gear in the landing position.

    PS: Here's a pic to show the Range of speeds



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  24. dholly added a post in a topic Model 7 Kitfox   

    From the Kitfox Pilots Guide (all based on two 170 lb. occupants plus a fuel quantity so that maximum gross weight is not exceeded, no baggage load):

    KF 5/1400-912ul
    Avg empty weight 700 lbs
    Avg Rate of Climb 900 fpm

    KF 5/1400-912uls
    Avg empty weight 750 lbs
    Avg Rate of Climb 1200 fpm

    KF 5/1550-912uls
    Avg empty weight 750 lbs
    Avg Rate of Climb 1200 fpm

    KF 5/1550-O-200
    Avg empty weight 850 lbs
    Avg Rate of Climb 1200 fpm

    KF 5/1550-O-235
    Avg empty weight 900 lbs
    Avg Rate of Climb 1300 fpm

    KF 5/1550-5-IO-240B
    Avg empty weight 900 lbs
    Avg Rate of Climb 1400 fpm

    KF 6/1550-912uls
    Avg empty weight 750 lbs
    Avg Rate of Climb 1200 fpm

    KF 6/1550-O-200
    Avg empty weight 850 lbs
    Avg Rate of Climb 1200 fpm

    KF 6/1550-O-235
    Avg empty weight 900 lbs
    Avg Rate of Climb 1300 fpm

    KF 6/1550-IO-240B
    Avg empty weight 900 lbs
    Avg Rate of Climb 1400 fpm

    KF 6/1550-O-200
    Avg empty weight 850 lbs
    Avg Rate of Climb 1200 fpm

    KF 7/1550-O-200
    Avg empty weight 850 lbs
    Avg Rate of Climb 1200 fpm

    KF 7/1550-O-235
    Avg empty weight 900 lbs
    Avg Rate of Climb 1300 fpm

    KF 7/1550-IO-240B
    Avg empty weight 900 lbs
    Avg Rate of Climb 1400 fpm

    KF 7/1550-912uls
    Avg empty weight 750 lbs
    Avg Rate of Climb 1200 fpm

    KF 7/1550-914 turbo
    Avg empty weight 800 lbs
    Avg Rate of Climb 1400 fpm

    The POH for my 680 lb. empty/1232 lb gross weight Aerotrek 912uls says Rate of Climb = 816 fpm, I expected better.
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  25. EDMO added a post in a topic MANUVERING SPEEDS   

    Not disagreeing with you on the yellow arc - that is correct. However, lets say the top of the green mark is the manuvering speed, or maximum cruise speed in turbulant air (at gross weight, I think), so the start of the yellow is still the manuvering speed.
    Ed in MO
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