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  1. jbswindle

    Why is GA continuing its demise?

    I'm 79 and have never owned an airplane. I only got my PPL when I was 66. Why? Expense: I have never had the money to indulge in this or any other comparably expensive hobby without impact to other more pressing expenses and without feeling selfish being the only one in the family interested...
  2. jbswindle

    Foam/Fiberglass ribs with multiple fiberglass skin "Panels"

    Many thanks.
  3. jbswindle

    Foam/Fiberglass ribs with multiple fiberglass skin "Panels"

    Very much would like to see your quick mold method. Where might I find your builder's log?
  4. jbswindle

    How Would You ‘Race’ Ultralights?

    If you have any drawings for this very attractive airplane I'd love to see them.
  5. jbswindle

    Hydraulic Hybrid Multicopter Design Takes Flight

    I had no idea what DDP was. Given the choice between DDP and electric motors I think I'd go for the latter, simpler solution. Digital Displacement Pumps - Fluid Power Journal
  6. jbswindle

    Plans format preferences and pricing

    I don't advocate for the level of detail required by military/government contract but do think that consideration of some of the principles of documentation should be kept in mind. I have reviewed and designed a number of printed circuit assemblies and that experience also affects my opinions...
  7. jbswindle

    Plans format preferences and pricing

    Well mine is indeed just an opinion, I haven't tried to build a Falco (which, incidentally, is an aircraft I greatly admire) so I'm speaking only as reader and not as a user, and I'm used to a documentation requirement that each part have its own unique drawing(s); that is, multiple piece parts...
  8. jbswindle

    Plans format preferences and pricing

    I have seen Scott's Falco documentation and find a number of frustrations with them. The drafting is beautiful but the drawing title blocks are almost completely useless - all they tell you is it's a Falco drawing and a letter code for the major part of the airplane (wing, fuselage, etc.) the...
  9. jbswindle

    Plans format preferences and pricing

    I have seen Ga III VI and VII assembly instructions (around 1997 era) and find them to be among the best I've seen. Bills of materials assume less importance with complete kits but I still find considerable value in total documentation - understandbaly most kit vendors and certainly...
  10. jbswindle

    Plans format preferences and pricing

    Since this site seems to quite frequently distribute opinions and, although most everyone who's been in the military knows what his sergeant thought about opinions, I have some opinions which I'll nevertheless throw in. First, I've never built an airplane - at least a full scale one. I do have...
  11. jbswindle

    Adding redundant fuel and spark to auto/sled/motorcycle conversions.

    That 555 system looks interesting. I learned about the original Signetics 555 gate sensitivity almost 50 years ago with a photographic slide projector advance system I designed and built. It had a long slide advance line on the 555's pin 2 trigger input and so I found to my dismay that it made...
  12. jbswindle

    Adding redundant fuel and spark to auto/sled/motorcycle conversions.

    Quite some years ago a good friend invited me to his office from which we would go to lunch. He worked for a company (now long gone) named Rolm Mil Spec Computers as a software engineer and was also probably the best software coder and hardware troubleshooter I've ever known. When I got there...
  13. jbswindle

    What aircraft do you guys think were designed "perfect" from the outset?

    Story I heard was that the Carter administration decreed that the F-20 be 100% Northrop funded development so there was little or no Air Force program management. The AF management drones didn't like that. Foreign governments don't buy US combat aircraft the AF won't use & the AF refused to...
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