ORIGINAL: build light
George, typically a great deal of C/L planes are designed to have an inboard wing panel with an extra rib bay'a worth of extra span to help with the weight of the lines.
True, but for those planes either both wings are shown on the plans or one wing is shown with an additional outline for the other wing. The Fierce Arrow has neither of these. Additionally, the plans show only one set of wing ribs and there is also no optional spacing shown that would account for differential taper.
The plan I am referencing is a reduced size version in Tom Morris's "Classic Era Construction Drawings". Perhaps the full-size plan is different. It was published in MAN in August 1957. You can always contact Bill Netzeband through PAMPA and ask him.
Somewhere I have the Fierce Arrow 400 plan in full size, but not the original.
George