Posted by Roger Lewis on September 10, 1999 at 22:18:37:
In Reply to: Strange phenomenon posted by Ian Easton on September 10, 1999 at 04:28:04:
I think I have a theory as to what you are experiencing. When you cross the
harmonic "break" moving the valve quickly you are doing something unconscious
with your air flow. Usially I see this with students and when they keep a steady
air stream there is less of a problem. The difference you note about moving
the vlave more slowly probably allows you to keep a continouos air flow happening.
For what it's worth.