Luftwaffe fighter pilots, like all fighter pilots, wanted aircraft with better performance. This is abundantly clear from the above quotes and they pressed their claims with Goering himself! One way to get better performance was through the introduction of the 100 octane rated DB601N engine and it is clear that Luftwaffe fighter pilots were pressing for its introduction...( I can't wait for the torrent of claims that Luftwaffe pilots "didn't want any stinking 100 octane rated engines...":rolleyes:) RAFFC pilots also wanted better performance, and they got a complete transition to 100 octane fuel, a transition which was completed prior to the start of the battle.

Salomonic hipotetic solution: Luftwaffe must buy some A6M2 Zero(Or buy the licence)and everybody is happy.

His exact words were "Moelders asked for a series of Me109's with more powerful engines."

You can't just make stuff up and attribute it to a historical figure. You don't really know what octane the pilots wished they had, did you?

The Germans generally didn't concern themselves with RO Numbers; their fuel was graded alphanumerically. C-3 fuel was what the Allies would have called 130 Octane fuel (150 after 1942 IIRC).

Fighter pilot don't give a damn about octane ratings except to get more power. One way to get more power (at least on the Merlin) is to run the engine on a higher octane fuel and increase the boost pressure. RAFFC did this to every Merlin powered fighter in its operational inventory, and thus no pilots are recorded as wanting 100 octane fuel, "like my pal has in the squadron done the road".

Luftwaffe pilots also pressed for "more powerful engines" and again high octane fuel made this a much easier proposition. Asking for more power is exactly the same as asking for higher octane fuel. ( I didn't have to wait long for the "we don't need no stinking 100 octane fuel" claims from the Lufters...:-P )

Couldn't agree more.

Please quote where I said that.

Source please. Oh wait, we have your word for it, and everything it worth for. :D

No comment :D

We have a source:

https://lh4.googleusercontent.com/-0...lin_100oct.jpg

and you have not presented a single shred of evidence to contradict it.

Of course you have no comment. The whole point of 100 octane fuel was give engines more power through higher boost pressure, and no RAFFC pilot flying a Merlin engined fighter during the BofB is on record of complaining that he can't use overboost, and so was deprived of 30% more power than his buddy in another squadron.

As I said earlier, absence of evidence does not imply evidence of absence.

Your source, if I remember from way back in the thread, is a 3rd-party book. I asked if they had references since this is not a primary source and you ducked the question.

I didn't duck it. We have a source that states that RAFFC went completely to 100 octane, and there is no source that states that this is incorrect, and there is a large body of evidence that supports the view that RAFFC used 100% 100 octane fuel operationally during the BofB. If you don't accept the above source, than present some evidence that from July 10 to October 30 1940, that even a single RAFFC Merlin powered squadron was using 87 octane during combat operations.

There was about 46 RAFFC Merlins engined fighter squadrons available on July 08 1940. Surely you can find evidence that one of them was using 87 octane operationally during the battle. Just one...;)

Yes there is a primary source that refutes the secondary source you posted, Seadog.

The seventh conference on 18 May 1940 clearly states that certain units in Fighter Command will make the switch.

That document has been posted ad nauseum.

As this on going fuel debate....

The best source on German Aviation Fuels is the Fischer Tropsch Archives.

http://www.fischer-tropsch.org/

They have a good collection of documents online anyone can learn about German fuels. Allied Fuel and German fuels were not directly comparable.

B4 is slightly better than 87 grade Allied fuels and is roughly equal to 91/~115 octane.

C3 began as the equivalent to 100/130 grade allied fuels and was later improved to 100/140 grade which allowed such improvements as a straight manifold pressure increase without additional knock limiting performance enhancement to 1.62ata in the BMW801D2 series and 1.98ata in the DB605 series engines.

C3 was adopted in 1940 and was used during the BoB.

http://img40.imageshack.us/img40/3662/c3inthebob.jpg

The whole debate is silly and pointless. The arguments are put forth by gamers to make their personal game play more enjoyable such that a game shape performance can overcome their own inadequacies. It is an agenda advanced by clowns who focus on whatever specific portion paints the desired picture without regard to the whole.

The facts are the German fuel was roughly equal but on the whole slightly inferior to the natural petroleum. The Allied fuels were better but allied engine technology could not take full advantage of their superior fuels. The German materials technology, chemical engineering, and fuel metering technology was much better and made up for the lower quality fuels.

Just the fact the Germans had direct fuel injection technology and the allies never did balances any fuel differences. One can make considerable power gains without changing fuel type just by changing the fuel metering system from a carburetor or Throttle Body Injection to Direct Injection. In a 1000 hp engine, you can expect to gain 80-150 hp just by changing the fuel metering method.

The whole debate ends up being a wash.