1927: Prototypes
The first 56 ft carriages were built in 1927, being a development of the then-standard steel-panel Aa class NZR 50-foot carriages. These first six carriages were 50 ft cars with lengthened underframes at the ends, and the cars retained the same bogie spacing as the 50 ft carriages. Designed for sleeper use, these cars were clad in wood initially. All were given the AA classification due to their limited running rights, and were numbered consecutively from AA 1616 to AA 1622. Later they were clad in steel and given new underframes to match the later 56 ft cars.
Read more about this topic: NZR 56-foot Carriage
Famous quotes containing the word prototypes:
“As our domestic fowls are said to have their original in the wild pheasant of India, so our domestic thoughts have their prototypes in the thoughts of her philosophers.”
—Henry David Thoreau (1817–1862)