The Jacobs R-830 or L-5 is a seven-cylinder, air-cooled, radial engine for aircraft manufactured in the United States by the Jacobs Aircraft Engine Company, beginning in 1935. == Design and development == The R-830 was effectively an enlargement of the R-755 with strengthened stressed parts.
The Jacobs R-830 or L-5 is a seven-cylinder, air-cooled, radial engine for aircraft manufactured in the United States by the Jacobs Aircraft Engine Company, beginning in 1935. == Design and development == The R-830 was effectively an enlargement of the R-755 with strengthened stressed parts.
Source: Wikipedia "Jacobs R-830" · CC BY-SA 4.0
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