The 197 coordinates are incomplete, as you noted. I just took a partial clip to show what I have and it is typical of the 100 or so SOF airfoils files.

It would be nice to know what the SOF means. Maybe it belongs to a particular airfoil plot program. Might even be an old DOS program.

The Eppler system is now the most common format, so the smart thing to do would be convert the SOF to a DAT format. I see several programs out there that claim to do that.

The Selig and UUIC database is absolutely awesome and certainly the ultimate airfoil data source for the serious modeler. Gee, why would anyone want to create a 'new' model airfoil considering what we have in our hands?

My goal is to organize all of this data I have downloaded over the years and eliminate the duplicates.

Thanks for the input!

- Erik