Knew that was coming. It's an UTTER CROCK and categorically WRONG !!! You can't find one single source that says that. Where do people find that nonsense, anyway? It's a typical "repeat whatever's on poedopedia " thing. Tests were in 1943-45 time frame. EVERY SINGLE ONE OF THEM were predicated on 92 fuel. It said so right in the test reports. FM 42-1, Hello? Knock knock? Anybody home? Oh, God, how I hate the internet.ORIGINAL: vettim89
I am concerned about using post-war test data on IJNAF/IJAAF aircraft using superior USA produced 100 Octane AvGas vs the fuel those forces actually had available to them during the war. I understand the desire to try to distill the data into a only comparing apples to apples algorhythm but completely discarding historical realities of fuel quality seems to exclude a very important variable
And if you read the post war analyses, it is clearly OBVIOUS that Japan was producing 92 CFR-M as their standard combat aviation spirit. The reports even have the cracking and additive specifications which, if one understands hydrocarbon processing, clearly show an identical product to 42-1. This was up untill 1944 when the Japanese got concerned with the amount of product, so went for a higher temp 50% point which increased the output but reduced the base octane rating, so they went with a skoosh more TEL and an additive they called Ethly Fluid, which was a mixture of TEL and a Bromine. The result was 91 CFR-M and was called Type 12, Mod-1. This worked till 1945, when output became severely problematic. So they upped the 50% and 80% temps, got more spirit, but it had such a low base octane rating that even with the addition of TEL and EF, they could only get it to 87 CFR-M. This was called Type 12, Mod-2. It's all in the source material.
CFR-M is the motor rating. The research rating is higher. It is very important to understand just what's being put in the tank. It is ludicrous to suppose that just putting 100 octane gas in a 90 octane tank will make things better. Just saying that shows that one has absolutely no idea about how engines work. Earnestly suggest you avoid poedopedia when you are looking to post "facts".
[ed] Sorry Vettim that you were the one to get whacked. You were just the first one to stick your head up. Wish it was one of the usual little weasels, but no joy. Nothing personal, pal. Live and learn, I'm thinking. But as Jerry Garcia says:
I see you've got your list out, so say your peace and get out.
Yes I get the gist of it, but it's all right
Sorry that you feel that way, the only thing there is to say is...
Every silver lining's got a touch of grey.
I will get by, I will get by, I will get by, I will survive.
J