[TPIN] pivot system

[Michael Anderson]

In what way do you adjust the backbore?

MA


> From: George Rawlin <gwrawlin at earthlink.net>
> Date: Sun, 27 Apr 2008 22:54:14 -0400
> To: <tpin at tpin.okcu.edu>
> Subject: [TPIN] pivot system
> 
> I wanted to report an interesting finding regarding one of the
> reasons we all apply some amount of pivot. If your pitch drops as you
> ascend due to a backbore that is too small, pivoting will assist
> raising to the proper pitch. However the added pressure on the top
> lip acquired by decreasing the angle of mouthpiece to top teeth when
> you pivot downwards can tire, weaken, or thin your sound.
> 
> If a proper adjustment is made to the backbore or throat length, -
> but predominantly the backbore -  The need for pivoting is reduced
> significantly, and a clear open relaxed tone is maintained as you
> ascend.
> 
> Has anyone else experienced this?
>