Complex sentence: It took Lima five years to come out with a Shay model that incorporated some of the demands of West Coast loggers, the Pacific Coast Shay, which had piston valves, better boilers, better truck springing, increased efficiency and other features.
Split into simpler sentences: It took Lima five years to come introduce a Shay model that incorporated some of the features demanded by West Coast loggers. It was called the Pacific Coast Shay, and had piston valves, better boilers, better truck springing, increased efficiency and other features.