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I just finished a band tour where we played Vesuvius. The rip wasn't really all to difficult to get down. I thought of it as an octave slur with some valve wiggling. Once you have an idea for what it should sound like, it gets easier. Vesuvius is a fun piece, enjoy playing it!

To me, a rip glissando is just a super fast lip slur making certain you hit all the notes in between. The more notes you hit, the more rip in the sound. On your setup, try it 24 or 123.

Agreed Tuben +1. I play a 25J (and other oddities). Alternate fingerings can add alot of desirable color to the omnipresent bass tone of the 25J. Playing lower octave fingerings delights my ears from C in the staff on up to C above or higher. 1&3 should be closer to pitch. If too high drop into 2 after you land on the top note. One of my favorite tunes for the 25J is the fanfare-ish opening of Gillespie's "Night in Tunisia", Bbm9, landing on 13 C above the staff makes me love the 25J
Joe
PS Just seal the top lip to the MP with no pressure
Edit: what key are we in? BBb duh 1&3 makes the A alternate

Based on the subject, I was sure this thread would either be about pants or passing gas.

Thai spicy chicken gizzards with noodles
Your results may vari
HEY lost,
Alter the title to"The Delightful 'Rip'"

After further consideration the dreaded rip might occur lifting the 25J from the floor

Well i was just messing with this A octave rip
1&3 produces an A C Eb F G A ,,,,Diminished to wholetone
I think the composer Knows the tuba better than i do
Joe

Two-octave rips at 1:02 -
https://bluedevils.org/mediabox/index.p ... etID=75501" target="_blank

All air, no flicking buttons.

This was part of the Bill Bell scale routine (as published in his book), two octaves or more on every key change. It is effective to blow harder than normal and try partially depressing a few or all of your valves.