The first goal after receiving plans for the homebuilt airplane was to draw the wing ribs in AutoCad. The drawings for Mr. Pietenpol’s The Improved Air-Camper date back to 1934. His grandson Andrew Pietenpol still sells them on the family-operated website: www.pietenpolaircraftcompany.com.   While full-sized wing rib printings are available, I chose to conserve the $15, […]