USRA Heavy Mikado

what is it?

The USRA Heavy Mikado was a USRA standard class of steam locomotive designed under the control of the United States Railroad Administration (USRA), the nationalized railroad system in the United States during World War I. These locomotives were of 2-8-2 wheel arrangement in the Whyte notation, or 1′D1′ in UIC classification. A total of 233 locomotives were built to this plan for the USRA; postwar, it became a de facto standard design, which was built to the total of 957 locomotives including the USRA originals and all subsequent copies. Heavy Mikado used the same running gear as the USRA Light Mikado but were built to a higher axle load, larger cylinders and a much larger boiler for more power and steam-generating ability.

base stats

• power 2.4 MWpower output
• built 233made in total

Bars compare against all trains: 600 km/h (maglev), 1,700 seats; power, weight and number built on a log scale up to 20 MW, 1,000 t and 20,000 built.

fun facts

• 🎂First built 108 years ago, in 1918.
• 🚗2.4 MW is about 28 family cars (~85 kW each) flat out.

steam locomotive: Burns coal, wood or oil to boil water; the steam drives pistons that turn the wheels.

spec sheet

built

1918–1944

retired

1961

status

retired

number built

233

kind

Steam

traction

steam

origin

🇺🇸 United States

builders

American Locomotive Company, Baldwin Locomotive Works, Lima Locomotive Works

top speed

—

power

2.4 MW

wheel arrangement

2-8-2

From the Wikipedia infobox and Wikidata. Blank means the sources don't say.