To Kallikrates,

The shear webs in the 4*60 and the LT-25 are in fact designed with the grain running spanwise. While it is true that most models have shear webs that have verticle grain, this is more for the builders convenience in slicing webs from the end of a long balsa plank.

The four star 60's wing is about as stiff as a 2X12 plank of the same length. Between the one peice shear webs and the geodetic cross-ribs, it is one solid wing.