Technical info Locomotive frames and buffer beams are made od mild steel, with axle bushes of bronze. Steel axles are used and all driving wheels are force fit and pinned. Driving wheels are either spoked cast iron or disc pattern. Coupling rods, connecting rods and crank pins are made of steel and bronze.
Cylinders are double acting slide-valve type direct drive.
They give ample power in relation to the adhesive weight of the locomotive. The bronze pistons are fitted with 'O' rings. The slide valves are made of bronze. Bronze stuffing glands are fitted to the stainless steel piston and valve rods. All cylinder covers and valve chests are fitted with gaskets and are screwed together.