Quote:
Originally Posted by Kurfürst
The Spit IIA ratings are somewhat unclear. The orginal July 1940 (unamended) engine ratings state that +12 lbs was only cleared for take off purposes, for all other combat purposes +9 was the maximum, even with 100 octane.
I guess +12 was cleared for the Merlin XII at a later stage.
See attachment.
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I see what you mean, but this is certainly not as it seems to be - you're correct with the operational limits, but they don't account for the use of BCC-O.
