Pennsylvania Railroad class M1

what is it?

The M1 was a class of steam locomotive of the Pennsylvania Railroad (PRR). It was a class of heavy mixed-traffic locomotives of the 4-8-2 "Mountain" arrangement, which uses four pairs of driving wheels with a four-wheel guiding truck in front for stability at speed and a two-wheel trailing truck to support the large firebox needed for sustained power. Although built for both passenger and freight work, they spent most of their service lives hauling heavy high-speed freight trains.

who runs it

Pennsylvania Railroad

base stats

• built 301made 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 103 years ago, in 1923.
• 📏16.5 m long: about 4 cars parked nose to tail.
• ⌛Served for 34 years (1923–1957).

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

spec sheet

built

1923–1930

in service from

1923

retired

1957

status

retired

number built

301

kind

Steam

traction

steam

origin

🇺🇸 United States

builders

Pennsylvania Railroad, Baldwin Locomotive Works, Lima Locomotive Works, Altoona Works

operators

Pennsylvania Railroad

top speed

—

power

—

gauge

1,435 mm standard gauge

wheel arrangement

4-8-2

length

16.5 m

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