Posted by Klaus on March 21, 2002 at 22:22:06:
In Reply to: Re: Ascending valve posted by Ray Noguera on March 21, 2002 at 22:03:29:
Which valve figuration had that De Prins tuba out of the factory?
Where did you place the ascending valve? Was it a piston or a rotary?
Your posting was very interesting reading!
Klaus