Merlin negative G cutout too quick?

[winny]

Originally Posted by Crumpp

I did watch the video. It is a cut scene from a movie that has nothing to do with reality.

It's Alex Henshaw, one of the chief Spitfire test pilots, flying a MkV in early 1941, at the Spitfire factory in Castle Bromwich. It's real.
It was filmed for the Americans to show how 'well' the British were getting on with the war. That's why the American guy is in it.

The flying is real, the Mk V has the 'orifice' fitted. If you listen carefully you'll notice that the engine does over-rev when the power comes back on.