Why still no dive acceleration difference?

[Crumpp]

if you fly your P47 with a 3.3m diameter prop instead of a standard 4m, you'll definitely lose more efficiency, perhaps 10%, at 0.7Mach(above Vmax).

Not at top speed or dive performance.

In general....Smaller disc = higher top speed because a large disc means more tip lose.

Larger disc means better low speed performance, ie take off, climb, cruise, and turn.

Examine the diameter of supersonic propellers.....