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Type: Posts; User: BoKu

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  1. Replies
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    My standard responses: * Pre-buy inspections...

    My standard responses:

    * Pre-buy inspections on amateur-built aircraft can be hit-or-miss. At issue is that each one must be evaluated on its own merits, since each builder chooses their own path...
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    Not to argue, but can you point me towards a...

    Not to argue, but can you point me towards a specific part of 14CFR49 that describes the minimum standards?

    My understanding has been that if the paperwork is in order, if you offer compelling...
  3. Thread: AN174-24 source

    by BoKu
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    I get a comfortable number of hits when I Google...

    I get a comfortable number of hits when I Google it. It even looks like Wicks have them in stock. For real weird stuff I go to GAHCO.

    Edit add: HBAs "Down for Maintenance" getting to you, too? :)
  4. Some observations in no particular order: * If...

    Some observations in no particular order:

    * If it has a wooden tail, run away.

    * Wood wings, especially wood cantilever wings like on Mooneys and low-wing Bellancas, really ought to be...
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    Based on my experience with carbon fiber,...

    Based on my experience with carbon fiber, probably between 15% and 30%.

    If you want efficiency, the easiest way to get it is to reduce frontal and wetted area to the bare minimum. Given the...
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    Until Scott came along, the Falco was a...

    Until Scott came along, the Falco was a factory-built airplane. Frati originally dismissed the idea that it could be built in basements and garages, believing the design too complicated for amateur...
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    It's not necessarily a slam-dunk, but it's very...

    It's not necessarily a slam-dunk, but it's very very likely. The probability is even higher if the kit is on the NKET approved list. But even if if it's not on the list, when you fill out the...
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    The post was from over a year ago, and it was...

    The post was from over a year ago, and it was their only post, so it is unlikely you will get a response.

    My guess is that the builder only built the vertical fin and rudder, and the rest of the...
  9. I've seen this exact thing in the Dick Schreder...

    I've seen this exact thing in the Dick Schreder HP-series kit gliders that I support in addition to the HP-24. Dick evidently picked up a thousand or so Fafnir RE3M6-2N two-row ball bearing rod ends...
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    Whenever I've been part of the painting party,...

    Whenever I've been part of the painting party, it's always been just whatever white or white-ish paint came to hand. Often multiple random cans poured into one five-gallon pail and stirred to a...
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    Also, if you're cantilevering the axle (only...

    Also, if you're cantilevering the axle (only supporting it at one end), you're probably better off getting the Azusa wheels with 3/4" bearings. A hollow 3/4" axle will be lighter, stiffer, and...
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    Therein likes the rub with any E-AB airplane:...

    Therein likes the rub with any E-AB airplane: Pretty much each one is different. The servo location, or at least the suggested location, might be shown in the plans. Or it might not.

    Fortunately,...
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    That might work, but not every Technical...

    That might work, but not every Technical Counselor would be comfortable doing that. Our charter is mostly helping people with challenges encountered during the build, and encouraging people to stick...
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    Added to Ignore list: 1. Click username to...

    Added to Ignore list:

    1. Click username to view their profile.

    2. Click Add to Ignore list.

    3. Click Yes to confirm.
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    Trebuchet ride!

    Trebuchet ride!
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    I don't think that's exactly true. I'm not an...

    I don't think that's exactly true. I'm not an engineer, but I'm pretty sure that the foam is indeed loaded in shear as it reacts lift loads out of the skin and into the spar. An engineer like Marc Z....
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    That would be a fun thing to make wings for! I...

    That would be a fun thing to make wings for! I know just how I'd do it.

    --Bob K.
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    I think it would be hard to say how fast he was...

    I think it would be hard to say how fast he was going on that last pass. So far as I know, no video has yet surfaced, and it is way too early for the NTSB data recovery team to have gotten anything...
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    Strong enough, almost certainly. But from the...

    Strong enough, almost certainly. But from the facts so far available, the issue appears to be more one of stiffness than of strength, in particular torsional stiffness that increases flutter...
  20. Thread: lancair 320

    by BoKu
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    2,530

    What I've found is that composite construction,...

    What I've found is that composite construction, to a greater degree than most other construction systems, is something you need to try out in order to understand. I think that is why my "akaflieg"...
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    * It's accepted and expected to measure...

    * It's accepted and expected to measure longitudinal positions no more accurately than 0.1". Measuring any finer is for the most part a waste of time and digits. Given the relatively limber nature of...
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    Wood filler inside the airplane is just extra...

    Wood filler inside the airplane is just extra weight with no meaningful benefit.

    Weight is the enemy.

    Cost/benefit ratio yields a DIV/0 error.
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    Long shot, but I wonder if they might be some...

    Long shot, but I wonder if they might be some sort of helicopter tail rotor blades.
  24. Oh, a BD-5. Two relatively minor, but often...

    Oh, a BD-5.

    Two relatively minor, but often important, points:

    * I know we toss it around rather casually here, but the word "airworthy" has a very specific meaning to the FAA. To them it means...
  25. Over and above the chain-of-ownership issues...

    Over and above the chain-of-ownership issues addressed above:

    One important thing to understand is that for a experimental, amateur-built airworthiness certificate, the FAA doesn't care at all who...
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