A steam locomotive is a locomotive whose primary power source is a steam engine. The most common form of steam locomotive also contains a boiler to generate the steam used by the engine. The water in the boiler is heated by burning combustible material – usually coal, wood, or oil – to produce steam. The steam moves reciprocating pistons which are connected to the locomotive's main wheels, known as the "driving wheels". Both fuel and water supplies are carried with the locomotive, either on the locomotive itself, in bunkers and tanks, (this arrangement is known as a "tank locomotive") or pulled behind the locomotive, in tenders, (this arrangement is known as a "tender locomotive").
Arnold German Imperial Railway Class95 Steam Tank Locomotive TT scale
Bachmann Spectrum American Railways 80 Ton Three Truck Shay H0 scale
Hornby Tri-Ang British Railway Class 9F EVENING STAR - Centenary Year Limited Edition 00 scale
Marklin Class 89 German Railway AC Steam Locomotive HO scale
Marklin German Federal Railroad Class 50 Freight Train Steam Locomotive with a Tender H0
Marklin PRE-OWNED Class BR 80 Steam Tank Locomotive H0 scale
Marklin PRE-OWNED German Railway BR81 Steam Locomotive HO scale
Roco German Democratic Republic Class 95 Steam Tank Locomotive with Sound H0 scale
Roco Private Narrow Gauge German Army Steam Locomotive HOe scale
Trix Baltimore and Ohio Railroad Mikado Steam Locomotive with a Tender H0 scale