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BigL
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    • BigL
      BigL replied to the thread Airfoils.
      The GA 30-613.5 has a flat bottom and top from 75% chord. "Flat" = A constant rate of change of slope (straight line). The advantage...
    • BigL
      BigL replied to the thread Airfoils.
      Hi Aeronutt. You might want to revisit my previous post concerning the GA 30U-613.5. I have edited it a lot to try and put into words...
    • BigL
      BigL replied to the thread Airfoils.
      I just checked the Zenith site and measured up the pictured airfoil and can confirm that, in Riblett' notation, it is a GA 35A415 (note...
    • BigL
      BigL replied to the thread Airfoils.
      There are horses for courses and the NACA 23012 is just another runner. Regarding the Beaver 550, there were other wings made that...
    • BigL
      BigL replied to the thread Airfoils.
      Go for it raytol. Just remember that any computer airfoil program is for comparative purposes only and for very very similar airfoils...
    • BigL
      BigL replied to the thread Airfoils.
      The ‘U’ in the Riblett airfoil designation refers to, according to John Vining of sdplanes.com, “ok, I did my research and according to...
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