Posted by Martin Matthies on March 27, 2001 at 04:06:53:
In Reply to: Re: ALSO! Meinl-Weston CC for sale posted by ?? for Dave Fedderly or other MW expert on March 26, 2001 at 16:46:28:
We decided to “upgrade” the CC-Tuba 2145 by using only the new “Big Valves” (like on the other CC’s 2155 and 2165) already in 1996/1997.
On these “Big Valves” the bore size is the same, but the piston diameter is bigger, which results in less disturbance in the air flow as it moves through the valve group. If you are looking for comments on this change from players, the reaction we’ve gotten has been that this change has “opened up the 2145 tremendously”.
Today, it will be difficult to find a 2145 that does not have the “Big Valves” when you purchase a new instrument. The easiest thing to do is measure the outside of the valve case to be sure they are the new "Big Valves." The measurement on the outside of the valve case should be no less than 32,5 mm or approximately 1.279 inches on every piston.
The full history of piston valve making at Meinl-Weston and more details can be found on the Meinl-Weston website in the FAQ section; just follow the link below.
Hope this helps.
Wenzel Meinl GmbH