At 10:34 PM 2/9/2005, you wrote: >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.
That is incorrect. The letter that prompted my response had the statement that a spar made out of stacks of 5 ply would be bulletproof. That was a comment by someone who does not have all of the information necessary to make a sound judgement concerning airplane design. Don Reid - donreid "at" peoplepc.com Bumpass, Va Visit my web sites at: AeroFoil, a 2-D Airfoil Design And Analysis Computer Program: http://aerofoilengineering.com KR2XL construction: http://aerofoilengineering.com/KR/KR2XL.htm Aviation Surplus: http://aerofoilengineering.com/PartsListing/Airparts.htm EAA Chapter 231: http://eaa231.org Ultralights: http://usua250.org VA EAA State Fly-in: http://vaeaa.org
