No speed for roll rate is given.
In "Flight Seven" there is an alphabetical listing of the tests performed.
a. -
b. Maximum achieved speed at 3.0km, 1.15 ata / 2500 rpm = 440kmh IAS.
c. -
d. Roll rate
e. -
He could have even been well slower then 440kmh so we don’t know. Do you know the roll rate of a spit 5? If not how do you know if a 50% increase in roll claim is a "glowing endorsement" or not?
That’s not "my argument" anyway.
From 3.0km during the VNE dive he reached 660kmh. He described it as "smooth and stable" and stated he was "only limited by his altitude". He makes no mention of stick forces and certainly if the controls felt like they were "locked" in concrete he would have commented on it.
You claim you never saw anything to indicate that a 109 of any sort is any less then locked in cement at 400MPH. Well there you go.
Control forces were so great that I could not center the stick, so I cletched both hands together and strcuk the side of the stick as hard as I could. The unblievable happened- the brave old 109 flipped over into a normal steep descent attitude.
Without the correct context (speed alt etc) the above quote means very little.