The initial production model of the Clipper was the B-314. Two key variants of the Clipper were produced by Boeing: the initial B-314 model and the subsequent B-314A.

With a maximum range of about 3,500 miles, the 314 Clipper was one of the pioneering commercial aircraft capable of crossing vast bodies of water such as the Atlantic or Pacific Oceans. The real highlight, however, was the Clipper’s range. This incredible engine significantly contributed to the success the Clipper enjoyed. Some versions also introduced enhancements to the supercharger for improved high-altitude performance. Over time, several variants of the R-2600 were produced, each introducing improvements in power output, engine management, and reliability. Photo crerdit – Airwolfhound CC BY-SA 2.0. The engine also powered some famous warbirds such as the B-25. This made it one of the most powerful aircraft engines available during the early to mid-1940s. The Twin Cyclone boasted a displacement of approximately 2,600 cubic inches (around 42.7 liters) and, depending upon the specific model and configuration, could produce power outputs ranging from 1,600 to 1,900 horsepower. Read More: Boeing YB-9 – A Precursor to Modern Bombers The engine featured a two-valve per-cylinder design and utilised a single-speed, single-stage supercharger to increase performance at altitude. The R-2600 Twin Cyclone was essentially a larger version of Wright’s earlier R-1820 Cyclone, adding a second row of seven cylinders to increase displacement and power output. This powerful and reliable engine played a crucial role in aviation during the World War II era, powering many notable aircraft including the North American B-25 Mitchell, Grumman TBF Avenger, and the Boeing 314 Clipper, among others. The Wright R-2600 Twin Cyclone is a 14-cylinder, twin-row, air-cooled radial engine that was developed in the 30s. The R-2600 was a huge, powerful engine and the Clipper had 4.

Boeing 314 clipper interior