F5D wings (Dihedral or no Dihedral)
05-05-2008, 04:05 PM
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F5D wings (Dihedral or no Dihedral)
Hello everyone.
Could anyone tell me if F5D pylon racer wings use some dihedral.
I understand they do have dihedral in the bottom part of the wing but flat in the bottom.
Please any help will be highly appreciated
Could anyone tell me if F5D pylon racer wings use some dihedral.
I understand they do have dihedral in the bottom part of the wing but flat in the bottom.
Please any help will be highly appreciated
05-08-2008, 06:44 PM
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RE: F5D wings (Dihedral or no Dihedral)
Most commercial F5D models have a minimal amount of dihedral. Im guessing maybe 1 degree. I could measure some of my models (Avionik D2005 etc) if you need something more accurate. Im really not sure why they even bother, the wing sction C/L is so close to thrust datum relative to other kinds of models & the fuselages are so skinny (< 2" at their tallest part). If anything, a 'top wing' model should probably have negative dihedral (anhedral) for minimal roll coupling, but its kind of a pain to mold & build. Q500's (top wing racers) are typically straight = zero dihedral & they work fine. I would say for 300 kph racing, dihedral doesnt even enter the picture, there is negligible side slipping & roll couple. It might help a bit on landings & just be 'neutral' for racing, maybe thats the thought. The model you are showing is quite dated BTW.
