Thanks for the info on spar wood guys.   For those interested, I  do need a 
center spar length that is 2 feet longer than normal.  The 18%  chord AS 
airfoil will improve the strength and load bearing necessary for my  project.  
The 
Taller spar is about 20% stronger than the stock spar which  will be necessary 
because the airplane I am designing is about 250 lbs heavier  than my 2S.  
Instead of foam/glass on the center stub wings I am probably  going to be using 
wood ribs and ply on the surfaces.  It will be comperable  in weight but 
stronger.  The ribs may also be made out of Nomex - a carbon  honeycomb 
material 
that is extremely strong and light.  Many ideas but they  are still on the 
drawing board.  This will be custom built and a true  experiment.  More info to 
be 
coming......


Bill and 41768

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