3-Valve Compensating Modification Theory

[Finetales]

It might be interesting to collect all of the different ways you could make a parts horn fully chromatic and how much work each method would be based on the different valve sets you have at your disposal. 3-valve piston sets, 4-valve piston sets, 3v compensating sets, 2 piston valves (from a G bugle), a lone piston and rotor (again from a G bugle), 3-valve rotor sets, 4-valve rotor sets, a single trombone/bass trombone rotor or fancier valve, and any combination of the above.

I can do that right here, having played in concert or at least experimented with almost all of these systems. Pitch names are based (pun intended) on a BBb instrument playing American conventional concert pitch bass clef notation.

I didn't mean each of those examples on its own, I meant in combination with each other. So like, if you had a 3-valve tuba and you added a 2-piston set from a G bugle, or if you had a 3-valve compensating set and added a 4th valve (which was the original premise of this thread).