Bogies and the.......Walshearts Valve Gear

Posted by Robert McFarland on
URL: http://c-sng-discussion-forum.254.s1.nabble.com/Bogies-and-the-Walshearts-Valve-Gear-tp2024.html

Could somebody familiar with the mechanics of operating a steam locomotive please take a photo showing a Mason Bogie's valve gear and label the various moving parts- then explain how an engineer adjusts the Johnson Bar and throttle as he's  running the loco.In looking at various Mason Bogie pictures there seem to be differences in the positioning of parts in the valve gear.