I am no good at knowing the correct nomenclature for those parts of a mouthpiece and happily stand corrected.
Quickly veering off topic(sorry Elephant!) but seeking to understand this nomenclature thing:
Had assumed that the taper of the bore exiting the shank(backbore right?) was just a straight walled taper... likely created with a morse tapered reamer or similar. If that isn't true WHAT does a larger 'backbore' look like? Does the 'backbore' size move in tandem with the 'throat'? Sometimes? Always? Never?
I had imagined from a mouthpiece design machinist standpoint that the 'backbore' is mostly set in stone and that most of what differentiates mouthpieces would be in the 'throat', shape of the funnel entering the throat, and cup volume/shape, and rim shape.
Maybe identifying what the possible variables are will help me stare at these things on my desk and make some sense of it.
the elephant wrote:
Further, or maybe separately, I like my Kelly 18. This is a big admission for me as I have always disliked the Bach 18 as well as all its various clones.
I know I am repeating myself here, but, I played a Mt. Vernon 18 for 35 years - they are NOT the same as the ones after that time period. I don't know WHAT is different, but something sure is. Perhaps the Kellys were modeled after that version?
Stryk wrote:Sounds like what was being said about the Kelly 18s - so perhaps they WERE a copy of the Mt Vernon vintage after all?
Since the cup is larger, both in diameter and depth, and the rim is a different profile, and without discussing throat and backbore, I would say that the more appropriate phrase is that the Kelly 18 is derived from the Bach, as is set forth on the website in so many words.
