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Hookr55

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    6
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Personal Information

  • Location (Public)
    Snohomish, WA
  • Occupation
    Flight Instructor

Project/Build Information

  • Plane Type
    Long-EZ

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  • Website URL
    http://

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  1. Hi Again, Ok, below is a paragraph from a January 1992 Kitplanes article called Birth Of An Eagle Part 1 pg 17. This is what led me to my question back in post #58. The wings are so similar to those of a Long-EZ that a pair of Long-EZ wings could be bolted onto the Berkut without modification (though it's not recommended). The greatest difference is in a carefully generated airfoil section. Ronneberg found that the Eppler airfoil presented in the original plans had been slightly corrupted in the printing process, so new templates were made from all-new plottings. Soooo we would probably have to talk to Dave to get the real scoop. Maybe it was just a selling tactic. I was just curious if anyone had heard of this before. Bob
  2. Thank you Marc, He certainly does have a good description there but the subject of Dave R's changes to the airfoil templates isn't really addressed. I wonder if Dave would tell us if we asked him? Bob
  3. Hi Gents, I'm certainly not looking at using the original Eppler 1230. I did a quick plot last night and can see the lower surface camber that exists in the aft 30%. I'll find that article that Dave R. was quoted as seeing some inadequacies in the original printing of Long EZ wing templates that he "improved" upon. I'm just interested in improvements that I can make that take advantage of newer methods without messing with "proven" designs. I learned at a young age when building soap box cars (my first fiberglass exposure) that many little things can add up and win races. I lost my last race by 12" to a guy who went to the national race and placed third. I'll keep monitoring for any activity on the template subject, otherwise my original plans version are just fine. Thank you for the open-EZ project, this information makes me feel more comfortable with my unregistered Long EZ plans. Bob
  4. I have Long EZ plans so have no intention of buying the Terf CD, but I may want the large rudder plans as well as the Roncz canard. I may order them from RAF. Bob
  5. Hi All, While on the subject of templates, does anyone know what Dave did on the Berkut to improve the wing airfoils. He stated way back in a magazine article that he found the EZ airfoil templates to be inaccurate and fixed them on the Berkut. I would like to do the same for my Long EZ. I know the Eppler 1230 airfoil plots are somewhere on the web but supposedly Burt used a "modified" Eppler airfoil. What was modified? How can I check the templates for accuracy the way Dave did? If we're doing it we might as well do it correctly. New subject: What do the large rudder plans consist of that RAF gets $20.00 for? Thanks much, Bob
  6. I initiated the thread on ACRE when I saw the recent oil flow study but now kind of regret ever doing it. I feel the NACA scoop application on the belly of the Long EZ is pretty unique. Therefore I don't think we can appply conventional wisdom (Paul L.) to our application. I'm surely open to trying it when I get that far. I don't think that we can assume success here without SOME drag penalty though. Any thoughts? Bob Geis Long EZ planning "Livin the Dream" in Iraq
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