Symetrical Aerobatic Airfoils?

[Foxtrot]

What are some good symetrical airfoils for a sp 400 size ship?

[Sture Smidt]

I have used the symmetric and low Re number Eppler 168 section on a .15 gasser and an Astro 05 electro. It worked well.

Coordinates: http://amber.aae.uiuc.edu/~m-selig/ads/coord/e168.dat

A coarse plot: http://amber.aae.uiuc.edu/~m-selig/ads/afplots/e168.gif

The database: http://amber.aae.uiuc.edu/~m-selig/ads/coord_database.html

A plotter program: http://www.baronerosso.net/software/profili/profili1_2.htm

Have fun!

Sture