The South African Railways Class 18 2-10-2 of 1927 was a steam locomotive.
Builder's picture of the Class 18, c. 1927
Col F.R. Collins DSO
Transition era knuckle coupler
Class 18 with the third cylinder visible, as delivered, c. 1930
The Gresley conjugated valve gear is a valve gear for steam locomotives designed by Sir Nigel Gresley, chief mechanical engineer of the LNER, assisted by Harold Holcroft. It enables a three-cylinder l
South African Class 18 2-10-2
…Heating area 850 sq ft (79 m2) Cylinders Three Cylinder size 21+1⁄4 in (540 mm) bore 28 in (711 mm) stroke Valve gear Outer Walschaerts – Inner Gresley Valve type Piston Couplers AAR knuckle Performance figures Tractive effort 53,650 lbf (239 kN) @ 75% Career Operators South African Railways Class Class…
LNER Class V2 4771 Green Arrow. Note Gresley conjugated valve gear located ahead of the piston valves, driven from the valve spindles
New South Wales Government Railways D57 class 4-8-2, with Gresley conjugated gear visible at front below the smokebox. The longer 2 to 1 Lever is located on the right side of the locomotive, and the shorter Equal Lever on the left side.
The third cylinder and Gresley gear are visible below the smokebox of this 4-12-2.
C53 10, January 1935