"Max Richter" wrote in message
...
Hallo,

i am wondering why American aircraftradialengines have no aerodynamical
spinners.Airplanes with inlineengines like P51;P40;P38 and so on have
aerodynamical optimized spinners.
And German radialengines had spinners like the FW190.Zero´s and other
Japanese aircraft had them.
What is the reason why the wellbuild American aircraft had just a little
hup on their propellers.
Thank You and greetings
Max


Probably because with all the rest of the engine exposed little was to be
gained but just looking at photographs try these (all verified by photos).
Some of these were built in quantity.

Boeing B-15/C-105
Boeing Model 337
Cessna 195
Convair B-36
Lockheed L-1049
Martin AM-1
Martin P4M
North American AJ-2
Ryan Spirit of St Louis
Vought F4U

Regards,

Tex Houston