#2264
Pennsylvania Railroad class K5
🇺🇸 United States ·built by Pennsylvania Railroad· from 1929· class of 2 American 4-6-2 locomotives
what is it?
The Pennsylvania Railroad's class K5 were experimental 4-6-2 "Pacific" locomotive types, built in 1929 to see if a larger Pacific than the standard K4s was worthwhile. Two prototypes were built, #5698 at the PRR's own Altoona Works, and #5699 by the Baldwin Locomotive Works. Although classified identically, the two locomotives differed in many aspects, as detailed below.
who runs it
base stats
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 97 years ago, in 1929.
- Top speed is 1.2× a car on the Dutch motorway (130 km/h).
- Weighs about as much as 25 African elephants (~6 t each).
- Served for 24 years (1929–1953).
steam locomotive: Burns coal, wood or oil to boil water; the steam drives pistons that turn the wheels.
spec sheet
- built
- 1929
- in service from
- 1929
- retired
- 1953
- status
- retired
- number built
- 2
- kind
- Steam
- traction
- steam
- origin
- 🇺🇸 United States
- builders
- Pennsylvania Railroad, Baldwin Locomotive Works, Altoona Works
- operators
- Pennsylvania Railroad
- top speed
- 154 km/h
- power
- —
- gauge
- 1,435 mm standard gauge
- wheel arrangement
- 4-6-2
- weight
- 149 t
- nicknames
- Mussolini #5699
From the Wikipedia infobox and Wikidata. Blank means the sources don't say.
Sources: Wikidata Q7120494, Wikipedia: Pennsylvania Railroad class K5 (CC BY-SA 4.0).Updated 2026-10-25.