Bulleid Chain-driven Valve Gear

The Bulleid chain-driven valve gear is a type of steam locomotive valve gear designed by Oliver Bulleid during the Second World War for use on his Pacific (4-6-2) designs. It was peculiar to the Southern Railway in Britain, and borrowed from motor-vehicle practice in an attempt to create a compact and efficient design with a minimum of service requirements.

Read more about Bulleid Chain-driven Valve Gear:  Design Principles, Problems

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