SNCF 040.DF facts for kids

Quick facts for kids SNCF 040.DF.1 SNCF BB 60041
SNCF 040.DF.1, later BB 60041
Type and origin Power type Diesel-hydraulic Builder Renault Build date 1952 Total produced 1
Specifications Configuration: ​  • UIC Bo′Bo′ Gauge 1,435 mm (4 ft 8 1⁄2 in) standard gauge Wheelbase 2.600 metres (8 ft 6+3⁄8 in), truck Pivot centres 9.000 m (29 ft 6+3⁄8 in) Length 15.000 m (49 ft 2+1⁄2 in) over Headstocks 15.960 m (52 ft 4+3⁄8 in) over Buffers Width 2.700 m (8 ft 10+1⁄4 in) Height 3.600 m (11 ft 9+3⁄4 in) Axle load 13.375 t (13.164 long tons; 14.743 short tons) Loco weight 53.500 t (52.655 long tons; 58.974 short tons) Fuel type Diesel Prime mover Renault 565, 2 off Engine type V12 Diesel Cylinders 12 Couplers Buffers and chain
Performance figures Maximum speed 110 km/h (68 mph) Power output: ​  • Starting 2 x 425 CV (313 kW; 419 hp) = 850 CV (625 kW; 838 hp)  • Continuous 495 kW (673 CV; 664 hp)
Career Operators SNCF Class 1952–62: 040.DF 1962–70: BB 60040 Numbers 1952–62: 040.DF.1 1962–70: BB 60041 Nicknames Birgitte Withdrawn 1970 Disposition Scrapped

The SNCF 040.DF was a special kind of train engine, called a diesel-hydraulic locomotive. Only one of these was ever built! It was made in 1952 by a company called Renault for the SNCF, which is France's national railway company.

This locomotive was a "prototype," meaning it was a test model. Engineers wanted to see how well this new design would work.

What is a Diesel-Hydraulic Locomotive?

A diesel-hydraulic locomotive is a type of train engine that uses a diesel engine to create power. Instead of using electric motors to turn the wheels, it uses a special hydraulic system, similar to how some car transmissions work. This system helps transfer the engine's power to the wheels, making the train move.

The Life of 040.DF.1

When this unique locomotive was first built in 1952, it was given the number 040.DF.1. It was a single, experimental engine.

A New Name for the Train

In 1962, the SNCF decided to change how they named their trains. So, the 040.DF.1 got a new name: BB 60041. It was the same train, just with an updated number.

Its Special Look

The 040.DF.1, like another train called the 060.DA, had a very specific paint job. It was painted a dark green color with a bright yellow stripe running along its side. This paint scheme is called a "livery."

A diagram drawing of the 040.DF.1, showing its design.

Why Was It Important?

Even though only one of these locomotives was made, it was important for testing new ideas in train technology. It helped engineers learn more about how diesel-hydraulic systems could work in real trains. This kind of testing helps make future trains better and more efficient.

The 040.DF.1 was used by the SNCF until 1970, when it was taken out of service and eventually scrapped.