>I am figuring that when I do the layup I will jig up the leading edges to stay
straight during cure
I had the same problem with the last wing I helped on. Charlie Laverty on the
Isle of Mull, north west Scotland.
We attacked it one stage earlier than you, by finding a length of steel angle,
eyeball straight, 2 by 2 by 1/4", and laying it along the LE when the cores were
bonded to the spar. We also restrained the ends to keep the marked waterlines
vertical by bondoing a triangle of wood strips to the floor and pushing a long
sharp nail into the foam through the wooden "jig". Of course the cores sprung
back part way to their original bow so after skinning we laid the steel back on
and allowed the skin to cure. It worked fine and hardly marked the glass layup.
After cure we had nice straight leading edges.
You might need to do something about the trailing edge cores too. It's certainly
worth spending some time making sure your wings are accurate and identical. A
twisted airplane may fly acceptably but will probably lose 10 kts in the cruise
and need all sorts of trim tabs.
Peter Kember's airplane is dead straight and flies hands off without tabs. I
have the feeling that the factory were impressed; in spite of the extra weight
it is still fast and can legally fly two up with full fuel and baggage provided
the two up aren't giants.
Graham
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