"Pobjoy I" is 7-cylinder, radial air-cooled engine, with double-helical reduction gear to airscrew shaft, ratio being 0.255: 1; engine is of exceptionally small size for its power, overall diameter being but 25 in.
Pobjoy
Flight
Flight ; 22 , n 14
1930
2 Figs.
Article (Journal)
English
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