I thought I outlined this somewhere, but maybe not. Lets say every note is labeled with 1-15.. Basically you are going to define a "group" as two or more notes starting with two notes moving through the whole passage.. then 3, then 4 etc.. so the whole "set" would look like this:
1 2
2 3
3 4
4 5
5 6
6 7
7 8
8 9
9 10
10 11
11 12
12 13
13 14
14 15
1 2 3
2 3 4
3 4 5
4 5 6
5 6 7
...
13 14 15
1 2 3 4
2 3 4 5
3 4 5 6
...
12 13 14 15
1 2 3 4 5
2 3 4 5 6
3 4 5 6 7
...
11 13 13 14 15
1 2 3 4 5 6
2 3 4 5 6 7
3 4 5 6 7 8
...
10 11 12 13 14 15
etc.. all the way up to:
1 2 3 4 5 6 7 8 9 10 11 12 13 14 15
You can see how it's basically mastering every possible transition of one note to the other? I didn't feel like typing that all out, so let me know if you don't see the pattern.
So, for each of those groups (I dunno, what is it like 1^15 or something?) I mastered each one.. Now, something like 1 2 can be mastered very quickly.. same with 2 3 and 3 4 etc.. You can start with a "chord attack" and play both notes simultaneously, and then use what Chang describes as "phase angle" and Bernhard describes as "wiggle your wrist" to slow down from "infinite speed" by not playing the notes simultaneously..
and also how many repetition you did for each note groups
Play each group as many times as necessary to master it.. You can get through the smaller groups pretty quickly.. In this case, it's only when you get to the 5 note groups, where you have to shift your hand laterally that you will encounter more difficulty because your speed is limited by the speed at which you can successfully shift your hand sideways.
So - that is alot of groups in that complete set! Depending on your skills and current technique, you may be able to omit many of them (ie. if you can easilly play the quintuplet already, you may opt to do only the groups that contain the hand shift, that is a totally personal decision.. but what I've outlined is the "complete set")
You're essentially training your hand in a very methodical way to master every movement required to play the passage, and it is for this reason that the entire set has to be completed in one sitting.
You should also find another similar passage and work your left hand as well, alternating frequently to avoid injury.
I know there are several posts on the forums describing exactly this procedure. But do you understand now the following:
1. how the groups and set of groups are determined?
2. why it would take a considerable amount of time to complete an entire set?
3. The number of required repetitions will vary based on group size and your skills.
Did this help?
-Paul