These experiments moved the GWR towards using four cylinders .
Experiments even tried a 4 - 6 - 2 , 111 The Great Bear which was the first locomotive of this type in the United Kingdom .
These experiments moved the GWR towards using four cylinders and they even tried a 4 - 6 - 2 , 111 The Great Bear which was the first locomotive of this type in the United Kingdom .