Donald Reid wrote: > > You do NOT want to make spar caps out of plywood. In the FAA > reference, they are talking about laminating using with the wood > fibers oriented along the length of the spar. The grain may be > oriented in a variety of different ways in spar lamination, but the > wood fibers must run the length of the spar.
Again, there was never any discussion of using plywood for spar caps. We were talking about laminating wood with the grain in all the layers running spanwise. The only use for chordwise grain in spar caps is to keep them from splitting, and I can't think of any reason for that except in an I-beam spar, and the chances of the shear web wedging into the caps is still nearly comical. (Note: the above opinion was checked out with both a mechanical engineer and an aerospace engineer. Both agreed 100%) -- Steve N205FT [email protected] He who seeks will find, and he who knocks will be let in.
