FB,

Had a quick search but can't find any ads for the 5 Star company you mention.

Foam wings have been around since the early 1960s and although Ed Izzo is usually credited with their invention I have my doubts. His famous article appeared in the June 1964 issue of MAN. Expanded polystyrene foam was first produced in the USA in 1959.

Fritz Bosch used foam wings on his FB37 design at the 1963 F3A World Champs so I suspect some early development took place in Germany which Ed may or may not have been aware off.

Ray