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Well remember they were working with lower octane fuels. In US testing re-tuned for high octane US fuel I believe the N1K2-J did better than 400 mph, and the Ki-84 moreso. (420-440 mph range iirc) Not to mention imptovements in climb. And I think the Ki 84 was the fastest Japanese fighter to see production/service.
And also rember that one of the principal opponents, the Hellcat, was a bit slow compared to most contemporary allied a/c, and slower tham the Ki-84 as well.
On the high octane tests, I'm not sure on solid doccumentation, but there's a lot of hits for it on google: Ki-84 mph octane - Google Search (figure for the Ki 84 seems to be ~430 mph)
There is no comparison in my opinion. The Nakajima Ki.84 is without a doubt, the most beautiful radial engine propeller aircraft ever built. The P-47M/N was
the absolute best performing during the war period though.
Which is a personal opinion not widely shared.In the real world there is no beauty in any object made for killing. All military vehicle's, aircraft, rifles, knives, uniforms, munitions etc. are designed for one purpose only, and that is not to be the best looking. I can see it now, I was killed by the most beautiful aircraft with the nicest bomb, its parabolic fall was so graceful.
rather a senseless comparison, next you will want to say stop cooking shows. The fact is no matter how beautiful an aircraft is, if it is made for the military, its a machine of war. Don't get me wrong, I have my pet aircraft and was in active service for a few decades. Furthermore the biggest thing that most people miss when talking about ww2 aircraft is that the design criteria was completely new and changing, i.e.:retractable undercarriage, constant speed props, aluminium skinning etc. etc. the list goes on. I doubt very much Schmued, Tank, Heinkel, Messerschmitt were siting at there design teams pushing for the most pretty.How about we cancel the classic car shows, because thousands of people have been killed over the years by '59 Cadillacs, '57 Chevys, '33 Fords and so on
Not a senseless statement at all.rather a senseless comparison, next you will want to say stop cooking shows. The fact is no matter how beautiful an aircraft is, if it is made for the military, its a machine of war. Don't get me wrong, I have my pet aircraft and was in active service for a few decades. Furthermore the biggest thing that most people miss when talking about ww2 aircraft is that the design criteria was completely new and changing, i.e.:retractable undercarriage, constant speed props, aluminium skinning etc. etc. the list goes on. I doubt very much Schmued, Tank, Heinkel, Messerschmitt were siting at there design teams pushing for the most pretty.