So what RAF FC squadrons were using 87 octane fuel.

Well of course 87 octane fuel was used in considerable amounts as the a/c in other RAF Commands require the fuel. :rolleyes:

Ignoring the evidence re 12 lb boost being linked to 100 octane

After it had been released to All operational Commands so not unexpected.

Correct, by Bomber Command, Training Command, Coastal Command, Manufaturing plants of engines and aircraft, BOAC and of course other Non operational units but not operational Fighter Command units.

You are the one that seems to stick to the 16 + 2 pre war proposal, but have no papers to support it. All we ( you can include me in that we) are waiting for is anything that supports your contention.
Anything at all, a reference to which squadrons, or which stations, or any decision as to timing or reporting path, a book that complains about being moved to an 87 otane unit/station or indeed one that rejoices as the move to a 100 octane unit/station. Absolutely anything at all, note not everything that supports your view, just anything that supports your view

Source please for 87 octane not being issued operational Fighter Command units.

I say you just made that up.

I will rephrase it, 87 octane was used in fighter command for operational missions until the switchover to 100 Octane. However there is no evidence that 87 octane was used for combat missions after the switchover during the BOB from July onwards.

Now if you or Crumpp can supply any evidence that says 87 octane was used in operational missions in or after July 1940 a lot of people would be very interested.

You show us your evidence for 87 octane use, for even one combat sortie by an operational Hurricane/Spitfire squadron during the BofB.

We're getting a bit tired of your reliance on 1938 documents.

You won't because they used 100 octane, exclusively, throughout the battle.

I think this is my new sig.

You'll find it in the same place as the source for tomato ketchup not being issued as ammunition.

Thank you. When did this alleged switch over to 100 octane happened, dear David? With documentary evidence if possible.

Of course, since it was standard fuel in the RAF. Similarly, there's no evidence that 100 octane fuel was used in more than a a couple of dozen cases out of thousands of fighter sorties, right David?


Let's get back to that allaged switchover, now you have seem to have changed your position and now state that this was supposed to have happened in July 1940. What documentary evidence can you offer to this so-called switchover, David?

Again, we need to specify the type of evidence required. Should combat reports that do not mention the use of emergency boost or +12 lbs/sq.inch constitute such an evidence, David?

Notice that Kurfurst has deliberately avoided the fact that guns in the BoB were armed with common sauces.

The Luftwaffe had access to British HP brown sauce after over-running British bases in France 1940 and decided that it was suitably spicy to load their MG's with it before moving to their own brand. The RAF tried it but stocks were low so switched to tomato ketchup just before the BOB. This was issued to all airfield NAAFI wagons and armourers would just take all the sachets direct from there. If you correlate the growth of Heinz and HP companies from pre to post war, looking at use of sauces, and the fact that there is no mention of this in any flight report anywhere ever, then we can conclude that it was in full use by both sides. I think the British experimented with Indian curry sauce on the Spitfire Ib model but it was a bit lumpy and the guns would jam. That squadron asked for their ketchup back immediately.

Since there is no evidence of this it can't be ruled out.

Still both sides have evidence but no proof.

The issue seems very similar to the "schroeders cat" problem.

Everybody and his uncle "knows" the cat is dead, but it can't be proven until the box is opened.

So, everybody, and his uncle, "knows" there was only 100 oct. used by the active part of the FC, but as in "Schroeders cat" all possibilities are equal true until there is proof (box opened).