That was a cute little plane, Bob. The easiest way to make the ribs is:

1) Make templates from plywood or aluminum, and sand them smooth
2) Cut out the appropriate number of blanks (rectangles slightly larger than the root template), and enough for the entire wing
3) carve and sand the blanks to conform to the templates - Remember the spar notches!

When building the wing, take alternate blanks from the stack. Thus, the first rib goes on the inboard side; the 2nd on the outboard wing; the third on the inboard; etc.  When completed, final sand with a T-Bar or something.

If I've omitted anything important, someone will chime in, I'm sure . . .

Ralph

Bob,

Theoretically, it shouldn't matter, but in practice, some balance between LE and TE usually "feels" better.

If the wing has a spar a bit forward of half the chord (LE to TE) length, you could line up on that. If not, you can stack them with about the same sweep as on the finished wing, more or less.

Doing this keeps the automatic taper (cut in by sanding thick root rib to thinner tip rib) a bit more uniform. Alternate the ribs as suggested, and sand the ribs as suggested, to put their edges smooth to the covering instead of a single sharp edge from the stack-sanded taper.

Line up the blanks and templates according to the spar.  Use large sanding bar after wing is assembled.  When assembling follow the previous advice.  DOC Holliday

Thanks for the pictures,  That is a great help---1 picture is worth ***** words, in more than one way.
There are inly 14 ribs with a straight t/e. 
Thank you all for your input.