First he says the jabos needed the extra power but then has 'derated' motors put in them and we all have been told that 'derated' motors run at less boost.
All that is true Milo. You don't seem to understand what derating is used for in regard to aircraft engines.
Please do a search on Google for "derated engines". You will learn a lot.
Derating is a tool used to manage engines and extend life or operation of that motor. The most common reason engines are derated is to use up inferior grade aviation fuel.
Talk to a mechanic. Usually motors get better with rebuilds. Occasionally they do not. The stress put on Military fighter engines meant some motors developed micro-cracks and other flaws which kept them from realizing the benefits of a rebuild.
A motor that did not quite make specs after a rebuild could still be a good motor with lots of service life left in it. Derating it allow a Military to continue it's use without having to scrap the motor or damage it while operating it.
Fighters need performance to tangle with enemy fighters. That is their primary mission.
Jabo's primary mission is to destroy enemy ground targets. Putting ordinance on a target is the order of the day, not raw performance. Jabo's were supposed to have fighters escorting them to keep enemy fighters at bay. Did not always work out that way but it was Luftwaffe doctrine to provide a fighter escort.
So it only makes sense that depot level maintenance would send derated motors to the Ground Attack Units.
AFAIK a "rated" power egg is one that is essentially fresh from the factory and on it's first operational hours after break in. Depending on the time period of the war, this could be as short as 30 hours of operation. Obviously rated power eggs developed more power and better performance.
I now know any motor can be derated. I encourage you to learn.
Crumpp
