Quote:
Originally Posted by Richard@Langair
These are a true airfoil. Not a round leading edge with a straight taper on the back. It was all done with 3D milling. It even has a bit of pressure relief on them!! I have a short video showing part of it, but don't know how to upload it.
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Hi Richard,
The video would be interesting. If you can post it on Youtube then copy the link to the VAF post. Thanks again for the work on the legs!
And, chatting with Ken and Steve about the airfoil; Ken chose for the Sky Designs legs (given that aluminum airfoil legs are all about sexiness) a slightly modified NACA 66(4)XXX section...he always thought that section had a nice pretty shape :-)
And Ken said, "Given the low reynolds number, there can't be much of a drag reduction benefit to using such a section but it certainly won't be producing more drag than the stock fairing! It would be fun to dribble some oil on the aluminum legs and see if there aren't any clues as to whether there is any separation aft of the max thickness point. FWIW: The thickness at the top of the leg is 21% and at the bottom it is 19%."
Here is a pic of the bottom of the leg, showing the thinner shape compared to the old transition fairing that fit the stock gear leg fairing. A gain of 10 kts don't you think?
You can also see the slight mounting hole correction needed to fit the fairing on the slightly wider leg.
I will be forming new transition fairings, from Van's for the lowers and from scratch for the uppers when the flying season slows down. For now this gap will have to be overlooked.
Cheers!
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