Spit IIA Speed in game test

[41Sqn_Banks]

Originally Posted by Kurfürst

Banks, what is the date of this manual? I see it has been amended so its contents are at a later date than the original. When did this amendment came into force?

It's from the same manual where the unamended engine limitations page from you is taken, i.e. the "unamended" version (though as can be seen there is an amendment included). If you have a really unamended version maybe you can show the corresponding pages.

Secondly, then how did the boost override work on the Mk II in 1940?

Did it overode automatic boost control and the pilot had to adjust boos manually, according to altitude?

Of course, the cut-out did disable the boost control, thus the pilot had to adjust boost with altitude. The only question that remains is if it maximum boost was limited (like modified Merlin III) or not (like unmodified Merlin III).

Also note this post: http://forum.1cpublishing.eu/showpos...&postcount=365

It shows that there were two different "All out" boost limits for Merlin 45, one regular rating (+9) and one for emergency (+12, later +16).

I just want to remind you that I was on your side in this case until there the combat reports were discovered that show the use of emergency boost/cut-out. I don't see a definite proof so far that the emergency boost was +12, however it's the only plausible value, everything below or above would be very very unlikely.