[1] The Sky Scout was a lower-cost follow-on to the Pietenpol's first homebuilt design, the Pietenpol Air Camper, using a lower-cost Ford Model T engine, rather than the more current Ford Model A engine.
The new pilot location required a section called a "flop" to be installed, essentially a section of the wing that was hinged up to allow the pilot to stand up when getting into and out of the aircraft.
[2] The aircraft was designed to be built of spruce and plywood.
Claude Sessions developed a finned head modification on his Sky Scout for lighter-weight air-cooling.
[5] Data from Sport Aviation & PlansGeneral characteristics Performance