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FM/DM threads Everything about FM/DM in CoD

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Old 04-03-2011, 01:17 AM
madrebel madrebel is offline
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i'm saying 1/4 use doesn't justify making all spits and hurris run at 9lbs of boost especially with no specifics. how much of that high grade fuel was used by PR spitfires? how much if any was used by bomber command? how much was used in hurricanes? how much in spits?

i dont have a number for 601N equipped 109s. i know is they first started showing up in late september in Es iirc with a handful of F1s showing up in october/november. all the Fs had 601ns.

the argument is just as valid as the raf argument. the significant majority of raf flights used 87 octane same as the germans. if you're going to give a minority fit for the raf give it to the germans too.
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Old 04-03-2011, 01:36 AM
IvanK IvanK is offline
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"all i'm saying is if there is 100 octane gifted to the brits i want C3 fuel in my E3(4/7)/N as i can dig up as much evidence that it was in fact used by some JGs as anyone has shown me for the RaF. "

Ok start digging and put it up here so we can all learn and benefit.
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Old 04-03-2011, 02:11 AM
winny winny is offline
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It's my understanding that a conversion was needed to the engine to enable it to run on 100 octane. They even painted little '100' s on the engine cowling so that 87 wasn't put in by mistake. By May 1940 all Hurricane, Spitfire and Defiant Sqaudrons had been converted.

Here's what Jeffrey Quill said about 100 octane.

"It was only shortly before the Battle of Britain that we changed over to 100 octane. It had the effect of increasing the combat rating of the Merlin from 3000 rpm at 6 1/2 lb boost (Merlin III) or 9 lb boost (Merlin XII) to 3,000 rpm at 12 lb boost. This, of course, had a significant effect upon the rate of climb, particularly as the constant speed propellers (also introduced just before the battle) ensured that 3,000 rpm was obtainable from the ground upwards whereas previously it was restricted by the two-pitch propellers. It also had an effect upon the maximum speed but this was not so significant as the effect upon rate of climb."

Have no idea what this means for CoD though..
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