Posted by Steve Inman on December 22, 2000 at 18:21:01:
In Reply to: Re: Head Scratcher & a Pal posted by Bill on December 22, 2000 at 07:20:29:
This is true, but if a rotary valve bore increases, both the height and diamater of the cylinder of the valve "innards" must also increase. Even though the rotation is 90 degrees, with a larger bore, you've got both more mass, and a longer "lever arm" causing more rotational inertia making the rotary valve harder to get moving (from a physics point of view).
Practically speaking, you may not notice this until the bore grows too large for practical use anyway -- BUT, does anyone have personal experience or the ease/difficulty of moving rotary valves for small vs. large bore horns? I assume there is a noticeable difference if you compare a rotary trumpet vs. a Piggy CC?