The locomotive had a total of eight
uniflow cylinders arranged in two groups of four placed between the 1st and 2nd and 2nd and 3rd driving axles, with rotary steam distribution valves placed over each; a bronze sleeve in the valve body was rotated to control cutoff. Two were connected to the forward pair of the six driving wheels. Four were connected, two each side to the centre pair, with the final two behind the last pair. These drove a jackshaft which operated and reversed the valves, and cut off was controlled by rotary sleeves. The boiler was large and had an unusual integral firebox, lined with
firebricks. Two-wheel pony trucks were fitted front and rear. It was the first
2-6-2 tender locomotive in Great Britain and would be the only one until the
LNER Class V2 of 1936. ==Finance==