The World's Largest Steam Engine! UP Big Boy No. 4014 Climbing The Canyon Subdivision (4/12/26)

READ: Shot at the Oxbow curve at James. Due to extreme snowfall on Donner Pass, 4014 ended up being re-routed back over the Canyon Subdivision on its initial eastward leg of the Coast-to-Coast Tour. Stay tuned for the full chase video from Roseville to Virgilia! Enjoy =) FAQ (Read before commenting): 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. The diesel locomotive, while no longer necessary for PTC compliance, will continue to periodically be used where it is expedient for steam locomotive fuel conservation and assistance on long, sustained grades for power & dynamic braking. Full FRC chase:    • Chasing Union Pacific Big Boy No. 4014 Ste...