I'll try ripping up and down the scales using 1-3-2-4 over and over. This is a sort of application of the broken alternating chords (Liszt uses these SO MUCH!)Also try broken thirds using just two fingers (this is a kind of cross training for trills, because you can get these really fast by kind of wiggling or oscillating your hand rather than hammering the fingers down).But ya, the Winterwind is kind of what I'm talking about for 1-3-2-4 (or any variant: 1-3-2-5, 1-4-2-5, etc.)
To nyiregyhazi: Thank's for your practical suggestion--I'll try it later today. I had also thought about using 1-2-1-3 (right hand) for runs of white keys, trying to keep my thumb on white key-black key pairs and reserving 2-4 and 3-5 for situations where the first of two notes was a black key. For example, using the Eb major scale starting on Eb:2-4 1-2 1-3 2-4 3-5 1-2 1-3 and 2 again on Eb.I'm an amateur jazz pianist and have never studied Liszt or the suggested Chopin piece. I'm interested in doing scales in broken thirds to speed up my improvizatory runs.I appreciate everyone's advice.