Ad: This forum contains affiliate links to products on Amazon and eBay. More information in Terms and rules
Not negligible - 13 km/h, circa 8 mp/h.
... it showed how much slower it was than Bf 109 F-4.
...
I'd be willing to bet Messerschmitt AG. Augsburg didn't use "British Performance Reduction Methods for Modern Aircraft (A.&A.E.E./Res/170)".
And that could just be the start of the differences.
...
The author of Beim-Zeugmeister, while very informative, seems to be
very opinionated.
... I did post the P-63C maximum speed figure at 450 mph. but only because there is
no official performance test stating otherwise. And I am pretty sure I
labeled it CALCULATED PERFORMANCE....
Hi Corsning,
Your collection of performance information is amazing, and I agree that calculated performance, while interesting in its own right, should be separated from actual flight test performance.
Thank you for the recognition Greg. It took me many years and thousands of hours of research
to put that together. It is far from complete but with each new find it becomes better.
One is achieved, and one is a good estimate.
It is very important to note this when posting information.
Also, we need to know the test conditions. If you fly with no ammunition. a waxed finish, a freshly-tuned engine, 40% fuel, and no shackles or extra tanks, you SHOULD get sparkling performance. But it isn't really representative of a combat-configured aircraft.