Hi there guys,

I am building a model designed by Alex Weiss which uses a flat plate airfoil wing. Now in his book, he says that a model can be scaled either up or down and if you keep to the original planform and proportions of the designer it will not seriously affect the flight characteristics of the model. Im planning to scale his design up about 25 % and would like help on the following.

1/ The original main wing is made from 1/4 in sheet balsa.

2/ I wanted to make a slightly thicker wing say using foam core with balsa sheeting each side, but the thickness would end up about 1/2 in.

As long as I keep it flat in section, would the extra thickness of the wing make a big difference?

Thanks for any help,

John