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  1. S

    Vans RV 3

    You can email me at [email protected]
  2. S

    Vans RV 3

    Is this aircraft still for sale?
  3. S

    Aspect Ratio/Chord/Span vs Section Depth

    Thanks Orion
  4. S

    Aspect Ratio/Chord/Span vs Section Depth

    Gordon, Good question on the tail, and yes I did plan on using a symmetric profile. I still think it would be a little tricky building a non flat wing without inducing some unwanted warp or twist. How about some of you guys who have built aluminum wings of non flat bottom airfoils, did you...
  5. S

    Aspect Ratio/Chord/Span vs Section Depth

    Gordon, I appreciate the comments and would love to go with 15% thickness but neither of these (2415 or 4415) have a flat bottom. I was only considering Clark Y or USA 35B to keep the wing design simple so it can be made on a flat bench without worrying about building in any inadvertent twist...
  6. S

    Stall Recovery vs Tail/Fuselage design

    Another question to stir up some thoughts. In most aircraft design texts it shows the typical 60deg/30deg unstable air profile for the leading and trailing edges of the horizontal stabilizer relative to the vertical stabilizer/rudder. The point of the diagram is in correctly locating the horiz...
  7. S

    Engine vs pliot placement relative to neutral pt

    Another question for the group: The aircraft design I am working on places the engine a little further foward than necessary for aesthetics, thereby requiring the pilot a little further aft. I realize there is a weight penalty with this (Add'l structure), but what does it do to aircraft inertia...
  8. S

    Aspect Ratio/Chord/Span vs Section Depth

    Guys, I'm building a one off design, standard low wing all aluminum aircraft. Right now I am playing around with AR vs. section depth. Here are some preliminary figures: Empty 450~500lb Gross 730~775lb Wng section USA 35B Wing Size: (option 1) 3.50' chord x 21.28' span = 74.5ft^2 AR = 6.08...
  9. S

    Hummel Bird Plans

    Guys, I have a 11x17 set of Hummelbird plans for sale that also includes the builders manual. This set does not have a serial number, but is legitimate. I contacted Hummel Aviation a few years back and they told me some of the early plans sets did not come with a serial number. Contact me if...
  10. S

    Wanted Hummelbird Plans

    If you haven't found a set, contact me I have Hummelbird plans available and they were never used.
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