Inaccurate performance data for BOB fighters in COD comparing to RL data

[41Sqn_Banks]

Originally Posted by TomcatViP

For what I said reading the Australian archive is that there was 100oct but the use was not in line with what is put frwd by you and your afficionados. It simple as tht.

In 1941 RAAF didn't intend to use 100 octane fuel at that time because they didn't have a engine that required the use of 100 octane. They only had one engine type that required 90 octane fuel. The RAF instead had already engines that required the use of 100 octane fuel (e.g. Merlin XX) and engines that allowed higher operation limits when 100 octane fuel was used (e.g. Merlin III).

I did say tht there is the logical hypothesis that 100 octane was used as a meaning to make available the stock of old fuel (74?) due to the probably huge quantity stocked and the very high price of tht fuel.

It's seems very easy to check to see if I am right or wrong as I said : as we hve the qty of old fuel and 100oct per month and the formula for the blending, just making the math shld give an accurate awnser.

You obviously have missed some statements in the documents. The standard aviation fuel used by the RAAF at this time was 87 octane fuel. This 87 octane fuel aviation fuel was blended by adding additives to 73 octane base fuel. This was the standard process.

As they required 90 octane fuel the they could either blend the 87 octane fuel even more to get 90 octane fuel or they could mix 97 octane fuel with 100 octane fuel. They've chosen to use the later method. Reason: Blending 87 to 90 octane would violate the specification for 90 octane because to much additives have to be added. Therefore this was only a emergency solution.
There was no need for this as they didn't have problems to obtain 100 octane fuel.