Quote Originally Posted by nieuwguyski View Post
Here's a nice page about valve designs and stroke:

Wedgwood Brass - Is it all Ovoids ?
I play one of his cornets. The stroke is only a bout a millimeter less than a Bach type valve but the way the air goes through the valves is less convoluted which makes it easier to blow than most cornets which in turn extends my endurance. You could play on it all day and not get tired.