Black 6 Thu 19th Apr update re Spit II

[41Sqn_Banks]

Originally Posted by Kwiatek

Not true see my post above with engine settings from Spit Mk II manual from July 1940 not November or later time.

The July 1940 page only allows +12 boost for "take-off". As said, "take-off" boost is not the same as "emergency boost". "Take-off" boost was only allowed below 1,000 feet or for 1 minute whichever applies first. It was activated by a gate at the throttle. Pilot's Notes General actually says it is not effective up to any considerable height.

"Emergency boost" was allowed for 5 minutes and was effective up to FTH and was activated by the boost control cut-out, but this is nowhere mentioned in the Spitfire II manual, except for the posted page which is dated after December 1943. Of course it doesn't mean it was introduced after December 1943, it only shows that it wasn't cleared in June 1940.

Please see the relevant pages from the Spitfire II manual.