© trainspo.comSIG RBS Gem 4/4 121
Built by MFO, SIG
Overview of the SIG RBS Gem 4/4 121
Explore the RBS Gem 4/4 121, a historic railcar that once traversed the Swiss railways.
Built in 1912 by MFO and SIG, this Bo'Bo' configured railcar stands as a testament to robust design and historical significance.
Measuring 11.53 meters in length and weighing 24.1 tons, the Gem 4/4 121 embodies early 20th-century railway engineering.
Operating with a 1.25 kV DC electric system, it reaches a top speed of 45 km/h, perfectly suited for its operations on the Solothurn Zollikofen Bern Bahn (SZB) line.
A true classic in rail transport, the RBS Gem 4/4 121 retains its charm and functionality, offering a tangible link to the railway's past.
SIG 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 SIG 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 |
