#4683· BDŽ 77.000 serie
BDŽ class 77
🇷🇴 Romania ·built by FAUR· from 1988· class of 10 Bulgarian narrow gauge diesel-hydraulic locomotives
2 photos from Wikimedia Commons · credits & licences
- 1. BDZ 77102 Dobinishte: Hattori 15· CC BY-SA 4.0
- 2. Triebfahrzeug BDZh 77005-7: Christian Koehn ( fragwürdig )· CC BY-SA 3.0
what is it?
The locomotives were built and delivered by the Romanian plant "23 August" (now FAUR) - Bucharest under technical conditions of BDZ. Maximum interchangeability of aggregates, assemblies and parts with the class 76 machines, built in the same plant, was pursued. The main differences are: altered gear ratio, reducing the maximum speed in favor of traction; increased number of engine cooling radiators; changed how the engine is coupled with the hydro compound; numerous improvements to the engine (driving mode, increased power output, etc.); more cab controls, control devices, etc. All class 77 locomotives were assigned to the Septemvri depot.
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 38 years ago, in 1988.
- 820 kW is about 10 family cars (~85 kW each) flat out.
- Weighs about as much as 9 African elephants (~6 t each).
- 13.3 m long: about 3 cars parked nose to tail.
diesel locomotive: A diesel engine on board drives the wheels, usually through a generator (diesel-electric).
spec sheet
- built
- 1988
- status
- preserved
- number built
- 10
- kind
- Diesel-hydraulic
- traction
- diesel
- origin
- 🇷🇴 Romania
- builders
- FAUR
- operators
- Bulgarian State Railways
- top speed
- 60 km/h
- power
- 820 kW
- gauge
- 760 mm narrow gauge
- wheel arrangement
- B'B'
- length
- 13.3 m
- weight
- 52 t
- Dutch name
- BDŽ 77.000 serie
From the Wikipedia infobox and Wikidata. Blank means the sources don't say.
Sources: Wikidata Q25483222, Wikipedia: BDŽ class 77 (CC BY-SA 4.0).Updated 2026-10-25.