Miss Shilling's Orifice

the 12 boost is afaik already available (spit2a) even if the dial does not read it. I have some doubts that a 15 lbs boost spit ever made it to front line during BoB.

[TomcatViP]

Why do they keep bulling any forum with the same arguments ?

[Robo.]

Originally Posted by 41Sqn_Stormcrow

the 12 boost is afaik already available (spit2a) even if the dial does not read it. I have some doubts that a 15 lbs boost spit ever made it to front line during BoB.

12lbs. is only available on Mk.IIa as you say, but as for the 'dial not reading it' - it's not supposed to as +12PSI is well outside it's range. It just moved beyond +8PSI and pilot felt the extra power although the Boost gauge didn't display it. (in so caleld RL)

What is weird thouugh is the Mixture lever as it needs to be on Auto lean in order to get that kind of boost. Unless they have it other way round at the moment (1.05) this is weird / wrong.

15lbs. Perhaps you mean 16lbs Mk.II Sea Hurricanes with Merlin XXs.

What we've got in game are Merlin III (All Mk.I Spits and Hurris) and Merlin XII (Spiftire Mk.IIa). +12PSI should be available via pulling the plug on all Mk.Is in the given era. Quite OT though, as far I know, tilly orifice has never been fitted in any Merlin III airframe therefore is (imho) out of focus for CoD. We're talking early Mk.Vbs here...

[Robo.]

Originally Posted by cheesehawk

From what I've read, by November 41 all Merlin engines had been fitted with the orifice, interesting about no Merlin IIIs having it, as I would have assumed there were still planes with the earlier engines flying about.

How many Merlin III aircraft were in the fronline service in November 1941? I will check the 'Merlin in perspective' for more information, but as it has been said, this is quite irrelevant for BoB era anyway.

As for British effort - they actually obtained the German FI before BoB (apparently from Spain) but didn't consider it important at all:

"In May, 1940, for example, a mysterious stranger approached Michael Golovine of Rolls-Royce an a Budapest cafe, and handed him a parcel containing the fuel pump from a DB601 engine, the device which allowed the Bf 109 to bunt without its engine cutting out. When Golovine tried to give the injection unit to the British Air Attache, he said he did not want it, and it never got to England."