Shortround6
Major General
Make sure (if possible) to list the fuel some of the engines used.
Listing the rpm of the engines is a very good clue.
The "G" engines were rated a 2200rpm for take-off and 2100rpm for max continuous.
Take-off power, even at the same RPM varied from 700hp to 1000hp. The lower power figures may have been from rarely used versions using high supercharger gears or engines that were tested and cataloged but never sold.
The Military "G" engines varied from 875hp (3 engines?) to 1000hp for take-off and none of them used the high supercharger gears that the low powered "civilian" models did.
The G100s ran at 2350rpm for take off (with very few exceptions) and 2200-2300rpm for max continuous. The were rated on 90 octane (rarely) 91 octane, 95 octane and 100 octane fuel.
Just about all were rated as 1100hp for take-off.
The G-200s ran at 2500rpm for take-off at 1200hp with a single exception. they built 462 (?) down rated G-200 engines to use in the last version of the Grumman J2F-6 Duck.
The older engines (the G and G 100 ) may have been out of production at the time.
A lot of times the engines can be identified as to series just by the RPM and/or the power or at least come close unless you are dealing with the odd-balls.
The CW-21 engines were "rated" at 1000hp for take-off and 850hp max continuous in just about all articles about it. Many articles only list one power or the other but it was the same engine. Again, there was no "Military" rating for the version of the engine they used.
Basically it was the same engine that the early Buffaloes/239 used. The Difference between 950 and 1000hp may due to different fuel and/or different carb or????
Listing the rpm of the engines is a very good clue.
The "G" engines were rated a 2200rpm for take-off and 2100rpm for max continuous.
Take-off power, even at the same RPM varied from 700hp to 1000hp. The lower power figures may have been from rarely used versions using high supercharger gears or engines that were tested and cataloged but never sold.
The Military "G" engines varied from 875hp (3 engines?) to 1000hp for take-off and none of them used the high supercharger gears that the low powered "civilian" models did.
The G100s ran at 2350rpm for take off (with very few exceptions) and 2200-2300rpm for max continuous. The were rated on 90 octane (rarely) 91 octane, 95 octane and 100 octane fuel.
Just about all were rated as 1100hp for take-off.
The G-200s ran at 2500rpm for take-off at 1200hp with a single exception. they built 462 (?) down rated G-200 engines to use in the last version of the Grumman J2F-6 Duck.
The older engines (the G and G 100 ) may have been out of production at the time.
A lot of times the engines can be identified as to series just by the RPM and/or the power or at least come close unless you are dealing with the odd-balls.
The CW-21 engines were "rated" at 1000hp for take-off and 850hp max continuous in just about all articles about it. Many articles only list one power or the other but it was the same engine. Again, there was no "Military" rating for the version of the engine they used.
Basically it was the same engine that the early Buffaloes/239 used. The Difference between 950 and 1000hp may due to different fuel and/or different carb or????