Victorian Railways NA class

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Victorian Railways NA class
NA locomotive No. 12 at Belgrave on the Puffing Billy Railway.
Type and origin
Power type Steam
  • BLW simple: 10-20 ¼ D
  • BLW compound: 10-13/26 ¼ D
Build date 1898–1915
Total produced 17
Configuration 2-6-2T
UIC class 1′C1′ t
Gauge 2 ft 6 in (762 mm)
Loco weight 36 long tons (37 t; 40 short tons)
Cylinder size
  • simple bore: 13 in (330 mm)
  • compound hp bore: 9 12 in (241 mm)
  • compound lp bore: 16 in (406 mm)
Performance figures
Tractive effort 12,170 lbf (54.1 kN)
Preserved 3, 6, 7, 8, 12, 14
Disposition 6 preserved, 11 scrapped

The Victorian Railways NA class was a 2-6-2 tank locomotive built for their 2 ft 6 in (762 mm) gauge branch lines.

Baldwin Locomotive Works in the United States supplied the first two 2-6-2 tank locomotives, as well as parts for a further two locos. One each of the supplied locos and the parts kits was a simple loco, and the other a compound. These Locos were never officially classed other than Narrow Gauge Loco, the A was there to indicate they were the second Loco to use the Number, the NA reference came about though workshop staff becoming Lazy when referring to Narrow Gauge Loco #A. The Victorian Railways Newport workshops assembled the parts to give an additional two locos, and subsequently built a further 13 of the simple cylinder version. The last one, number 17, was built in 1915.

By the mid-1920s these small locomotives were not able to handle the increasing traffic, and two G class Garratt locomotives were purchased to supplement the fleet.

The locomotives weigh 36.58 long tons (37.17 t; 40.97 short tons) and produce a tractive effort of 12,170 lbf (54.1 kN), allowing them to haul loads of 90 long tons (91 t; 100 short tons) up grades of 1 in 30 (3.33%). Numbers 6, 7, 8, 12, and 14 have been restored and operate on the Puffing Billy Railway, and No. 3 is also on the Puffing Billy Railway, awaiting eventual restoration. The remaining locomotives have all been scrapped.