During 1926 to 1927 nine cars of the 50 feet type were converted from narrow gauge gauge to broad gauge gauge. They were 181, 182, 186, 187, 189, 196, 197, 217 and 222.
The main change during conversion was to the end platform steps. The new platforms were 10 feet wide and the body was only 8 feet wide giving an odd appearance. Screw couplings were fitted, but these were replaced between 1941 and 1946 with automatic couplers.
