Description

The Mk IV has a tapered wing, but is in all other ways the same as the Mk III.  In addition to the fuselage parts, the Mk IV kit includes a total of 26 ribs, 13 for each side.  Rib spacing is 2.25 inches at root, then 2.5 for 8 spaces, and 2.75 for last 3 spaces.  You’ll have to look at the diagram and draw your own wing plan.