PORTERFIELD MODEL 35-70/35-90

1935

Plane & Pilot

Tuesday, November 30, 1999 at 12:00 AM ET

Verified

Edited By: Omar Filipović

Key Takeaways:

The Porterfield 35-70 and 35-90 models, developed by E.E. Porterfield, entered production in 1935 by the Kansas City-based Porterfield Aircraft Corp.
These two-seater aircraft were primarily powered by 70-hp LeBlond or 90-hp Warner Scarab Junior radial engines, with other variants using 50-75 hp Continental or Lycoming engines.
They featured an enclosed cabin with dual removable controls, a fabric-covered steel-tube fuselage, and spruce/plywood wings.
Key performance included a top speed of 135 mph, a cruise of 120 mph, an initial climb rate of 1,050 fpm, a ceiling of 20,000 ft, and a range of 336 miles.

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STANDARD DATA: Seats 2. Gross wt. 1,326. Empty wt. 823. Fuel capacity 18. Engine 90-hp Warner Scarab Junior.
PERFORMANCE: Top mph 135. Cruise mph 120. Stall mph 40. Initial climb rate 1,050. Ceiling 20,000. Range 336.

Both Porterfield models entered production in 1935 and were powered by either the 70-hp LeBlond fivecylinder or the 90-hp Warner Scarab Junior five-cylinder radial engines; thus, the numerical designations 35-70 and 35-90 apply. The Porterfield Aircraft Corp. of Kansas City, Missouri, had been founded one year, and the development work was done by E.E. Porterfield, who was formerly president of the American Eagle Aircraft Corp. Other versions of the first Porterfields were built with 50, 65, and 75-hp Continental or Lycoming engines. The enclosed cabin for two persons had dual controls, but they were quickly removable from either seat. Wing construction was two spruce spars, spruce and plywood ribs, and fabric covering. The fuselage was a fabric-covered steel-tube structure.