sundown57
Legendary member
You can make a biplane wing span as big as you like (almost) if you use functional bracing.
Like this.
View attachment 148658
All foam hollow wing built from 2 mm Depron. There no spars of any sort. It has a 52" span.
The rigging is scale and provides at least 75% of the wings rigidity.
I agree. If strung properly it's very solid.