Bug 174 on 12lbs boost. Review please.

[Crumpp]

I guess if you look a little bit more, you can find a dozen others, at least half of which could be used with the Merlin.

If you look JtD, it is in every airplane's published material.

Just like the Spitfire Mk I Operating Notes clearly states DtD 230 is the specified fuel.

It is not always in the same location or format, though. Unfortunately they did not think to standardize Operating Instruction formats by convention until much later.

The convention's in place during WWII only agreed the information must be published and followed.

[Crumpp]

The evidence for 100% 100 octane use by RAF FC during the BofB is extensive and overwhelming.

Keep repeating it and might come true!!

It worked for Dorathy.

[Al Schlageter]

Originally Posted by Crumpp

Keep repeating it and might come true!!

It worked for Dorathy.

You have documentation showing how much 87 octane was consumed by RAF Fighter Command.

[NZtyphoon]

Originally Posted by Crumpp

Other than it is the specified fuel and listed in all the Operating Notes besides the Spitfire Mk II as the required fuel for the type?

Or the fact it is the largest portion of aviation fuel in the Air Ministry and 100 Octane does not make a significant portion of fuel at the airfields until after October 1940?

Seems a pretty lock tight case that 87 Octane fuel was used in considerable amounts....at least according to the Air Ministry.

Actually the proportion of 100 Octane use cf "Other Grades"* rises well before October and stocks of 100 Octane were far healthier than "Other Grades" well before October.





Once again, the only engines cleared to use 100 Octane at the time were Merlin IIs (in reality no Merlin IIs were in frontline use by June 1940) IIIs, XIIs and XXs and Bristol Mercury XV. 52,000 tons of 100 Octane was used July-end October and only a few aircraft types were able to use the stuff.

Originally Posted by Crumpp

Just the fact it is the specified fuel and the FC consumed millions of gallons of it.

Not that Crumpp has actually proven this by providing one single piece of documentation specifying that only a few frontline FC units were allowed to use 100 octane while the rest had to make do with 87. Payton-Smith specifies that 87 octane was required for non-operational purposes.

Originally Posted by Crumpp

Keep repeating it and might come true!!

It worked for Dorathy.

*Crumpp and Kurfurst continually refer only to 87 Octane when other grades of fuel, such as D.T.D 224 (78 Octane, used for de H Gypsy engines etc) were also lumped in with 87 Octane, so the actual amounts of 87 Octane in stock and consumed are lower than the charts would suggest.

[Seadog]

Originally Posted by Crumpp

If you look JtD, it is in every airplane's published material.

Just like the Spitfire Mk I Operating Notes clearly states DtD 230 is the specified fuel.

http://www.spitfireperformance.com/no611-100oct.jpg
and
http://www.spitfireperformance.com/no74-100oct.jpg
and:



Apparently not.

You are quoting from a pre 1940 manual.

[NZtyphoon]

As it stands neither Crumpp nor Kurfurst have added anything useful to this thread, including any documentation showing that FC required the majority of its squadrons to continue to use 87 Octane while only a small proportion are to use 100; all they are doing is regurgitating everything they've previously pushed in the 170 plus page thread on 100 Octane, ignoring everything that's been posted there. I cannot see any future in responding to either of them as long as they have nothing new to present which comprehensively refutes everything that has been posted here and elsewhere.