The R985 Wasp Junior has certainly earned its place in aviation history, and continue to be used today. Whether you need repairs, maintenance, or an overhaul, it’s important to know more about your engine options. Many of the modern designs being released today are built on the foundation of the R985, and in many instances an engine with a different name will still be very close in design to this classic. While it was used throughout World War II, today the R985 has been used in agricultural aircraft, bush planes, and small personal aircraft.
That means that if desired, aircraft owners could swap from one to the other. One of the more desirable things about the engine was that it and the larger R-1340 actually have the same mounting dimension. The power is derived from a centrifugal supercharger, and the first design delivered about 300 horsepower although later models increased that level and by the time the C-series was released horsepower was increased to 600hp for takeoff and 525 for sustained flight. The design uses a nine cylinder radial that is air cooled. More than 39,000 of the engines were built, and decades later many are still in use. The R985 Wasp Junior is probably one the most popular engines Pratt and Whitney released, and has found its way into civilian as well as military aircraft. Over the years it has found its way into numerous aircraft including: The Wasp Junior was designed as a smaller version of the R-1340, and was designed for mid to small sized aircraft. It’s also considered to be a classic, and the first run of the R985 started back in 1929. This radial engine is versatile, delivers good power, and is very reliable.
There are numerous engines in the industry, but one of the most popular is the R985 from Pratt and Whitney. Your aircraft’s engine is the most important part of its construction, and at Covington Aircraft we feel that taking the time to understand just a little more about it is a good idea whether you’re a pilot, a fleet manager, a mechanic, or just an owner of a single plane.
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