4.11 and Engine Overheat

[Crumpp]

Does the manual state what the prop setting should be during manoeuvering?

The maximum propeller setting is 3000 rpm with a "momentary" allowance of 3600 rpm in a dive. The lower the rpm, the higher the manifold pressure will be to produce the same power. That means it is easier to reach the limits of the green arc on the manifold pressure gauge.

Most of the WWII vets I have talked too rarely used any boost system. They just did not have time for most combats as it was over too quickly and they were too busy during it to worry about a boost system. The most common engine setting these aircraft used in combat is the maximum continuous rating. For the Spitfire I, that is listed as 4 1/2lbs manifold pressure at 2600 rpm. That is the maximum power the engine is designed to produce without damage. That is one very unrealistic aspect of games. It is like turning. In a game, players go around and round making small circles. In real life, the accelerations after a few turns will leave a pilot exhausted and vulnerable.

It is not that hard to adjust your rpm to full fine (maximum rpm). Just remember to correct sequence:

Reducing power - Manifold pressure first then reduce propeller rpm

Increasing power - Propeller rpm first then increase manifold pressure.

Maneuvering - adjust manifold pressure to keep it within acceptable limits.