While the animated demo shows a five-cylinder layout for clarity, the operating principles are identical for seven and nine-cylinder rows, too.Īlso covered are the important historical advantages and drawbacks of the radial, and there’s a brief but informative segment on the queen of American radials, the mighty Pratt & Whitney Wasp Major, a 71.5-liter, 28-cylinder (four rows of seven) masterpiece that developed up to 4,300 hp in turbocompound form. (The same questions seem to always come up.) For instance, why the classic radial engine always has an odd number of cylinders per row, how the cylinders are numbered, and the universal firing sequence that is common to all engines of its type. While the clip is a quick three minutes, you’ll learn some key facts car guys often don’t know. The differences are the interesting and often mysterious part, and since radials are most commonly used in aircraft, we went to an aviation authority: the Boldmethod online aviation school and its Youtube channel, where we found the best and briefest explanation we’ve found to date.
But while there are some significant differences in its construction, at its heart it’s the same Otto four-stroke engine we’ve all come to know.
To car-oriented enthusiasts, the radial engine might be a stange-looking beast. Got three minutes? Here’s a clear and simple explanation of the radial engine that anyone can understand, including the important points you want to know.
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