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Thread: Pratt & Whitney R-1830 Twin Wasp radial piston firing order
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Old 18th Dec 2010, 07:21
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RecipMech
 
Join Date: Dec 2010
Location: Pennsylvania USA
Age: 81
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Wright Aeronautical Engines:
R-570 5cyl. (J5 Spirit Of St. Louis) Whirlwind
R-790 7cyl. Whirlwind
R-975 9cyl Whirlwind
R-1820 9cyl. Cyclone
R-2600 14cyl. Double Cyclone
R-3350 18cyl Duplex Cyclone


Pratt & Whitney Engines:
R-985 9cyl. (L20 Beaver) Wasp Jr.
R-1690 14cyl. Hornet
R-1830 14cyl. Twin Wasp
R-2000 14cyl. Twin Wasp
R-2800 18cyl. Double Wasp
R-4360 28cyl. Wasp Major

This is pretty much how I got to understand some of the garble with engines.
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