Posted by scott on August 28, 2003 at 20:03:55:
In Reply to: BB TUBA ROTARY VALVE OIL posted by Steve in Dallas on August 28, 2003 at 09:04:10:
There was a discussion of this earlier and the following PDF was linked. It is very useful stuff, highly recommended.
http://www.lyricbrass.com/spang/oilrotor.pdf