150 avgas

[RTHolmes]

I may be wrong here but, over 70" MP at WEP on the P-47M and N suggests to me that they use 150 avgas, are any other aircraft in AH modelled with 150 avgas? later spits and ponies plainly arent, not sure about the tempest or F4U-4 though.

[save]

They did, after ww2 though.

[RTHolmes]

well plenty of aircraft used it late in ww2 too, iirc most frontline RAF spit and tempest squadrons used it from late '44, pretty sure jug, pony and 38s did too, although i'm not clear on how many of them and in which theatres.

[Angus]

Absolutely.
What's out boost on the Spixteen BTW? They were doing +25 in 1944 for certain.
There is someone on the forum who has this all. Dan, or possibly Milo.

[RTHolmes]

our late spits show +18, although +21 was used for some XIVs and +25 for some IX/XVI.

our tempest shows +10.5, +11/12/13 was used with 150.

how about axis aircraft? I realise the luftwaffe had problems with getting higher rated fuel late in the war but did any units get the good stuff? how about the japanese?

[Karnak]

RTHolmes,

Japanese aircraft seem to be modeled with 87 octane.  They did not have any high quality fuel that I have ever heard of, though they did try to find ways of getting it.  Ki-84 on US 100 octane fuel in post war tests did 420mph at best altitude.

[MiloMorai]

Angus, I would have thought you would have this site bookmarked.
http://www.spitfireperformance.com/

http://www.wwiiaircraftperformance.org/150grade/150-grade-fuel.html

One thing to remember when comparing Allied and German fuels is that the German fuel was rated using the lean mixture and Allied fuel was rated using the rich mixture.

[morfiend]

Angus, I would have thought you would have this site bookmarked.
http://www.spitfireperformance.com/

http://www.wwiiaircraftperformance.org/150grade/150-grade-fuel.html

One thing to remember when comparing Allied and German fuels is that the German fuel was rated using the lean mixture and Allied fuel was rated using the rich mixture.

 Hmmm,interesting Milo,is there a reason for the difference,rich vs lean in the ratings?

 I never heard this b4 so now I'll have to look into it,man thats the best thing about the forums,you learn something everyday,in my books thats a good thing.

   

[jdbecks]

RTHolmes,

Japanese aircraft seem to be modeled with 87 octane.  They did not have any high quality fuel that I have ever heard of, though they did try to find ways of getting it.  Ki-84 on US 100 octane fuel in post war tests did 420mph at best altitude.

Im not sure back then, but in the US you measure your octane rating slightly different, I think our 100 Ron fuel is equilent to US 93? or around that..

[SgtPappy]

The F4U-4 is modeled with the standard 100/130 grade.

If it was using what the RAF rated 150, I have some graphs that say it would have a near 5000 fpm climbrate.

[Saxman]

The F4U-4 is modeled with the standard 100/130 grade.

If it was using what the RAF rated 150, I have some graphs that say it would have a near 5000 fpm climbrate.

Man, imagine the whines that would ensue if the F4U-4 got 150.

I want it now just to HEAR them.

[MiloMorai]

Some 145 fuel was shipped to the Pacific late war. Not sure if it was used operationally. Widewing would probably know.

[Widewing]

They did, after ww2 though.

Not correct... All 8th AF fighters were using 150 octane fuel after July of 1944. Thus, the P-47Ms were using it.

I have a document somewhere referencing the need for 115/145 avgas for the F4U-4. I'll see if I can dig it up on my external storage drives.



My regards,

Widewing

[Masherbrum]

They did, after ww2 though.

You'd be incorrect.

[mensa180]

Wonder if one day the AvA could have better fuel as a perkable ord option.