Narushima

Heh, yeah. Hartmann was a badass. Though I'd like to put that encounter into perspective. Did he have altitude advantage? If so, I can see it happening. G-10 was actually slower than the K-4.

Ok, so I've modified the graphs in the OP and changed the spit to +25lb according to this report: http://www.spitfireperformance.com/jl165rr.html Also made a chart for the D-9 with ETC rack and 2.02 ata boost.

I just assumed that they're doing the +18lb one because they already have this engine modelled with the P-51. All they have to do is tweak the supercharger a bit and change the cooling arrangement. Yeah, +25 would make it more competitive, but it will still be the weakest plane of them all, simply because by 1944 spit 9 was obsolete. It was not suited for the high speed combat that has evolved ever since planes like the FW 190 and F6F demonstrated the superiority of BnZ combat. Now if we had the Spit XIV then things would be different, but alas, this is what RRG decided to model.

What do you mean? Acceleration between these planes would be pretty easy to figure out. Just look at the climb graph. The climb graph is basically a graph of acceleration in the vertical plane. That's for low speeds, for higher speeds (400-500 km/h and up), where drag becomes more of a factor, you'd cross reference it with the speed graph.

Depends on what version of Spit 9 and K-4 you're comparing. Could also be that the K-4 is using the thin blade propeller on the climbing chart that I've found, but I haven't found any other chart with of a 1.8 ata MW-50 K-4.

Not enough room on the chart :D It'll suffice to say that it's faster than any other plane on the chart at any altitude.

A couple of graphs I made showing tops speeds and climb rate at altitude for the upcoming DCS prop fighters. The fighters are running at performance levels that I assume is what will be modelled in DCS. I might be wrong, so don't take it as gospel. The only thing certain is the P-51, and even that might change if ED decides to model it with 150 octane fuel. All of the fighters represented here could be upgraded in a similar fashion. I made these graphs through researching historical graphs (with some alterations to compensate for compressibility error or drag increase due to external bomb racks). They're not 100% accurate, and they never will be, because no 2 aircraft were ever the same.

That's what I thought. Thanks.

It was completely obsolete by this time, especially on the Western front. More likely to see a FW 190, Arado 234 or even an Me 262 attacking ground targets than a Ju-87. Stuka production stopped in 1942.

Sorry, I meant standard manifold pressure at WEP. I'm doing 2 charts (max speed and climb) comparing all the prop fighters that are going to be in DCS WW2.

Anyone knows what was the standard manifold pressure used for the P-47 in the DCS WW2 time frame (September/October 1944)?

Awesome read. Found a tiny mistake. "The instrument is graduated from 0 to 4500 and indicates engine speed as Revolutions Per Minute (RPM) in hundreds of RPM. The face is scaled to 100 RPM throughout. The normal operating RPM is 1600 - 2400. The maximum normal RPM is 3000." If you look at the image in the manual next to this text you can clearly see that the gauge only goes up to 3500 RPM.