Names of some of the popular funfly airfoils

[Gary_Canada]

Hi.
Anyone know the names of some of the more popular fully symetrical funfly airfoils? I am looking for something like the Tiny or Crazy max. These usually have a slight reflex and very thick at the leading edge.
I have my cnc foam cutter working and would like to try a scratch built speed 280 to 400 funfly plane.
I have found dat files for cap21 and epler 473 which I may use but they have no relfex.

thanks
Gary

[BMatthews]

Most of the stuff I see doesn't really have a "name" anymore. Once you add big flat ailerons to the trailing edge they all change from what they USED to be.

But having said that I suspect most of them use a vaguely NACA 00nn type in the 13 to 18% range. Some use the Eppler 47n series to move the leading edge forward to try to be more stall resistant.

Yet others use that pollywog shape that comes from the inseam of their running shoe as near as I can tell. There's certainly nothing like them in any of the airfoil programs that I've ever seen.

I'll leave it up to others to debate the pros and cons of the three types and the optimum thickness. Other than the fact that if it's electric it's better to be a little on the thinner side.

[Ollie]

Many symmetrical airfoils will work well for fun fly applications. The airfoil shape is not very critical where drag is not a very important consideration. Put your design effort into improving control response and power to weight ratio but don't worry much about airfoil selection. The only airfoil characteristic that you need to be concerned about is the stall characteristic. It will affect the ease of entering a spin, the snappiness of rolls and tip stall tendencies in landing. The airfoil selection depends somewhat on aspect ratio, taper ratio and the aspect of performance you want to emphasize.