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    CAD for wiring diagrams

    Hi Folks, I’m at the stage where I need to plan my airplane’s wiring, and I’d like to use CAD because it makes changes etc. easier. I’m very familiar with electronics CAD such as Eagle (now integrated with Autocad), but it’s not ideal, I would have to create almost all the devices, which is a...
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    Primer on 4130

    Hi, I'm new to working with 4130, please excuse this elementary question. I'm cutting, grinding and cleaning parts that will eventually be painted (no other processing). It may be some weeks/months before I get to painting. I was thinking to give the fresh cleaned surfaces a coat of etch...
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    It didn't add that much weight, honestly

    For those of you worrying about using .049 tube instead of .032, here is a reminder that Led Zeppelin installed a fireplace in their airplane.
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    Low or mid wing spar position - pros and cons

    Hi Folks, I'd like to hear some thoughts on where to run the main spar through the cockpit on a conventional, single seat, tractor, low/mid wing monoplane. It seems like the two regular options are a low wing spar under the pilot's knees, or a mid-wing spar above and rearward of the knees. I...
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    Sheet Alu Aileron Hinge

    Hi Folks, I recall, maybe wrongly, that back in the 90's when the Zenith 601 first came out, it didn't use a conventional hinge for the ailerons, but simply continued the top surface aluminum wing skin all the way back into the aileron (as the top surface aileron skin), and used the flexibility...
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    Akin's Laws

    This is a legendary set of laws for spacecraft design - tongue in cheek, but with plenty of truth. If you substitute "engine" for "launch vehicle", they apply equally well to aircraft design, I think. Akin's Laws of Spacecraft Design
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