How a Steam Locomotive Works (Union Pacific “Big Boy“)

A thorough examination of a steam locomotive, using the mighty Union Pacific Big Boy as our example. Special thanks to Mark “Hyce“ Huber for in-depth expert review! See more excellent railroading content at Mark’s channel: @Hyce777 CREDITS Jacob O’Neal - Research, script, narration, 3D modeling / animation, music PATREON SOFTWARE USED I use Blender 3D to create these models. It’s free and open source, and the community is amazing: 0:00 Intro 00:58 The Basics 02:09 Firebox 04:58 Boiler 07:47 Feed Water / Injectors 10:06 Steam Dryer / Dry Pipe 10:24 Superheater 11:25 Multi-valve Throttle 12:12 Smokebox 14:17 Cylinders 16:36 Valve Gear 19:28 Lubrication 19:58 Chassis / Frame 21:28 Suspension 23:29 Brakes 25:16 Sand 26:11 Cab 29:49 Sight Glasses 31:28 Cab (Cont’d) 33:35 Tender 34:20 Stoker 35:54 Outtro