The first 171 of the 221 produced used a streamlined nose radiator, the remainder used the unfaired installation.
2.
The Sprat was powered by a water-cooled 275 hp ( 210 kW ) Rolls-Royce Falcon III engine with a nose radiator, driving a four-bladed wooden propeller.
3.
For the competition, it was powered by a water-cooled upright inline 240 hp ( 180 kW ) Siddeley Puma with a large nose radiator behind the wooden two-blade propeller.
4.
The Hispano-Suiza installations differed in their nose and radiator arrangements : the first used a rectangular nose radiator like that of the S . E . 5, whereas the third had a neatly rounded nose with a small chin radiator.
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