SNCF Class Y51100
The Y 51100 is a prototype shunting locomotive developed by the French SNCF based on the Y 9100.
They were nicknamed “yoyos” because they were constantly moving around the marshalling yard. These locomotives entered service between 1953 and 1956 and were withdrawn from service in 1985.
Manufacturer: ANF (Alstom) / SACM / Ateliers de Sotteville QM.
Assembly: Sotteville/Crespin (France)
Years of production: 1953—1956
Production: 50 units
Length: 9360 mm
Width: 2960 mm
Height: 3900 mm
Track gauge: 1435 mm
Powerplant: Renault type 565 (V12)
Continuous power: 308 kW
Max speed: 23 km/h
Weight: 34 t
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