Crumpp
I think I can truly say that I have never seen such rubbish posted from someone who pretends and likes to believe that they know about aircraft.
The first document supports the contention that operational units had 100 octrane and non operational units had 87 octane. Something that has been said from the start.
The Alterations and Precautions Paper
This has three main sections:-
a) Modified Boost Control
The modifications as outlined in the paper are very straightforward and can easily be undertaken. Basically you drill two holes and reassemble the cut out valve, to pretend this is a major task shows a massive disrespect to the ground crew and support teams.
b) Modified Cylinder Top Joint
This change is already incorporated in new engines and is already being addressed in normal mainantence, so nothing to be done there
c) You need 100 Octane fuel
Which is what we have been saying from the start.
Your Pilots Notes dated June 1940
I do not believe for a moment that these are from June 1940. Reason is simple, it doesn't mention any fuel type. In June 1940 we know for certain from combat reports and station/squadrons records that 100 Octane was in use in a number of squadrons. If the type of fuel isn't mentioned then it can only be because only one type of fuel exists and that puts the pilots notes in 1938/9. Crumpp has been asked many times to supply other parts of the Pilots Notes to help us tie this issue down. His refusal to do so I believe speaks volumes.
Consumption Chart
The figures up to May are combined 87/100 octane figures which is why they are in the centre, a junior school student could work that one out.
These figures are for the RAF not Fighter command and I draw your attention to the figure for August 1940 36,000 tons of fuel were used by the RAF. In September 37,000 tons almost the same but the proportion of 100 Octane had gone up, In October 35,000 tons again a figure in the same ball park and 100 octane proportion again went up.
The question is, What changed between August and October? The reply is again very simple All operational Commands were Authorised to use 100 Octane in August. As the units in Bomber Command and Coastal Command switched over, so the proportion of 100 Octane increased.
Its also worth noting that in April 1941 when we all (I think) agree that 100 Octane was in use in Operational Commands the split between 87 Octane and 100 Octane was still 50/50. Training, Transport, BOAC, manufacturers and other non operational flights, use a lot of fuel.
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