PIPER J-4 “CUB COUPE”€

1939’€“42

Gemini Sparkle

Key Takeaways:

  • The Piper J-4 Coupe, produced from 1939 to 1942, was the first Piper monoplane to feature side-by-side seating and was frequently utilized in flight training schools.
  • Powered by a 75-hp Continental engine, it included an enclosed cabin, hydraulic brakes, a more complete instrument panel, navigation lights, and increased fuel capacity compared to its predecessor, the J-3 Cub.
  • Constructed with a welded steel-tube fuselage and spruce/aluminum alloy wings, this aircraft had a top speed of 100 mph and a range of 455 miles, with almost 200 units still active today.
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STANDARD DATA: Seats 2. Gross wt. 1,400. Empty wt. 865. Fuel capacity 16. Engine 75-hp Continental.
PERFORMANCE: Top mph 100. Cruise mph 96. Landing mph 40. Initial climb rate 450. Range 455. Ceiling 12,000.

The J-4 Coupe was the first Piper monoplane to have side-by-side seating. First flown in 1938 and produced from 1939 to 1942, the light high-wing monoplane with enclosed cabin was often used in flight training schools and in the Civilian War Training Program. Very similar in structure to the J-3 Cub, the J-4 was powered by a 75-hp four-cylinder Continental engine. Cub Coupe features included hydraulic brakes, a more complete instrument panel, and navigation lights. Fuel capacity and overall size of the J-4 was also increased over its predecessor, the J-3. Construction is a welded steel-tube fuselage, and wings are made from spruce spars and aluminum alloy. Almost 200 Coupes are still active.

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