Thanks Romeo.
G,
I have a book called "Stress Without Tears", which is "A primer on aircraft-stress analysis requiring no advanced mathematics".
He has some nice detailed examples of the moments / bending forces on a wing spar.
He shows how to calculate the forces along an arbitrary seqment of the spar. That is somewhat related to what I'm trying to calculate.
I might have to consult an aerodynamics book for info on how the air "bounces" off the wing though
Mike