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Union Pacific Big Boy

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The start of the eastbound trip to Omaha for the 2023 College Baseball Championship, which will see the 4014 cover new territory over the Yoder and South Morrill Subdivisions. Enjoy and stay tuned for the full compilation =)

FAQ (Read before commenting):
The diesel locomotive accompanies UP Steam power to provide a measure of security and flexibility in operations. The diesel can hold or slow the train speed down using dynamic braking, thus saving the cost of new brake shoes and the time needed to install them. Additionally, the diesel can be used to assist when necessary, and to extend the fuel and water supply, allowing for longer operating distances and days. Finally, as of 2021, the diesel is an integral part of the PTC system required for FRA compliance.

The water overflow from just in front of the rear cylinder on the fireman's side is the exhaust steam injector overflow port. Discharge from this port is normal when starting and stopping the injector, and when the injector switches between live steam and exhaust steam.

Yoder & South Morrill Sub Chase:    • Chasing Union Pacific Big Boy #4014 S...  
Pacing South Morrill Sub:    • Pacing Union Pacific Big Boy #4014 St...  

posted by twinkles676jl