Yes, that chromatic scale in the Chopin etude goes fast! I think that a desirable fingering must be based on an attempt to minimize movement of the thumb, and to think of the chromatic scale as being a sequence of several sets of notes each of which is arranged in chromatic order. I recommend the fingering (starting at the F-double-sharp below low C) as 3215432154321543213154321432154321. The third finger provides a strong start at the F-double-sharp, the next three sets of 54321 bring us to that B-sharp so all-important for the harmony; then we analyze where we want to end up -- B-sharp, C-sharp, D, D-sharp, E -- which we can finger as 5,4,3,2,1. Before that we have a G-sharp, A, A-sharp, B cluster to be fingered 4,3,2,1, and before that, a D-sharp,E,E-sharp,F-sharp,F-double-sharp cluster to be fingered 5,4,3,2,1, which leaves a C-sharp, C-double-sharp set to be fingered 3,1.