© trainspo.comRailcar
MFO RBS Gem 4/4 121
Built by MFO, SIG
Top speed
45 km/h
28 mph
Weight
24.1 t
53,131 lb
Length
11.53 m
37 ft 10 in
Track gauge
1,000 mm
Metre gauge
Years built
1912
2 units
Axle arrangement
Bo'Bo'
Overview of the MFO RBS Gem 4/4 121
Explore the historic RBS Gem 4/4 121, a significant Swiss railcar.
Built in 1912 by MFO and SIG, this Bo'Bo' classification locomotive served the Solothurn Zollikofen Bern Bahn (SZB).
Its 1000 mm gauge and a top speed of 45 km/h made it a reliable choice for shunting operations.
Weighing 24.1 tonnes and measuring 11.53 meters, it operated on 1.25 kV DC electric systems.
A true piece of early 20th-century Swiss railway engineering, ideal for historical locomotive enthusiasts.
MFO RBS Gem 4/4 121 technical specifications
| Value | Imperial / US | |
|---|---|---|
| Built by | MFO, SIG · 19122 units | |
| Top speed | 45 km/h28 mph | |
| Electric systems |
| |
| Track gauge | 1,000 mmMetre gauge3 ft 3⅜ in | |
| UIC axle arrangement | Bo'Bo' | |
| Length | 11.53 m37 ft 10 in | |
| Weight | 24.1 t53,131 lb |
Operators of the MFO RBS Gem 4/4 121
Railway companies that have operated the RBS Gem 4/4 121, with the class designation used by each of them.
| Operator | Class | Country |
|---|---|---|
| Solothurn Zollikofen Bern Bahn | SZB Gem 4/4 | Switzerland |
