Invention and Engineering

BNR class N

The Bengal Nagpur Railway class N was a class of 4-8-0+0-8-4 Garratt steam locomotives built by Beyer, Peacock & Company in England in 1929. At the time of their construction, they had the largest water capacity of any Garratt, in addition to being the largest locomotives in India. The class N Garratts were introduced following successful performance results from the earlier HSG Garratts. Due to their heavy weight, they were restricted to 90 lb/yd (45 kg/m) rails. They had straight-ported cylinders; it is not known if this was suitable for slow, heavy coal traffic. Like the earlier HSG Garratts, they worked on the Chakradharpur-Jharsuguda and the Anara-Tatanagar sections. After electrification, they were used at Rourkela. They could haul 2,400 t (2,362 long tons; 2,646 short tons) on a 1 in 100 gradient.

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See also

• ▸0-2-2
• ▸List of Italian inventions and discoveries
• ▸Economy of Scotland

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