BNR class NM: Difference between revisions

Class NM
Class NM
Power type
Type and origin
Power type	Steam
Builder	Beyer, Peacock and Company
Serial number	6705–6714
Build date	1931
Total produced	10
Configuration:;
Specifications
Configuration:;
• Whyte	4-8-0+0-8-4
Gauge	5 ft 6 in (1,676 mm)
Driver dia.	4 ft 8 in (1.422 m)
Axle load	17.5 long tons (17.8 t)
Adhesive weight	138.55 long tons (140.77 t)
Loco weight	204.15 long tons (207.43 t)
Fuel type	Coal
Fuel capacity	8 long tons (8.1 t)
Water cap.	6,000 imp gal (27,000 L; 7,200 US gal)
Firebox:
• Grate area	67.6 sq ft (6.28 m2)
Boiler pressure	210 psi (1.45 MPa)
Heating surface	2,961 sq ft (275.1 m2)
Superheater:;
• Heating area	642 sq ft (59.6 m2)
Cylinders	Four, outside
Cylinder size	20 in × 26 in (508 mm × 660 mm)
Valve gear	Lentz or Caprotti
Valve type	Poppet
Tractive effort
Performance figures
Tractive effort	69,660 lbf (309.86 kN)
Operators
Career
Operators	Bengal Nagpur Railway; →Indian Railways;
Numbers	BNR: 826–835; →IR: 38826–38835;
Locale	East Central Railway zone
First run	1931
Last run	1960
Withdrawn	1960
Preserved	0
Scrapped	1960
Disposition	Scrapped

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Revision as of 11:47, 23 October 2016

The Bengal Nagpur Railway class NM was a class of ten 4-8-0+0-8-4 Garratt locootives. This was modified N class Garratt. It had Thermic siphon and arch tubes for better performance. It worked on the Bilaspur-Katni line and Anuppur-Chirmiri branch line for hauling coal. Probably because of Poppet valves, they retired early.^[1]

^ "5brinkster". Archived from the original on 2013-10-23. {{cite web}}: Unknown parameter |deadurl= ignored (|url-status= suggested) (help)

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-The '''Bengal Nagpur Railway class NM''' was a class of ten [[4-8-0+0-8-4]] [[Garratt locootive]]s. This was modified [[BNR class N|N class]] [[Garratt]]. It had [[Thermic siphon]] and arch tubes for better performance. It worked on the [[Bilaspur, Chhattisgarh|Bilaspur]]-[[Katni]] line and [[Anuppur]]-[[Chirmiri]] branch line for hauling coal. Probably because of Poppet valves, they retired early.<ref name=5brinkster>{{cite web|title=5brinkster|url=http://sundar.brinkster.net/Garratt.htm}}</ref>
+The '''Bengal Nagpur Railway class NM''' was a class of ten [[4-8-0+0-8-4]] [[Garratt locootive]]s. This was modified [[BNR class N|N class]] [[Garratt]]. It had [[Thermic siphon]] and arch tubes for better performance. It worked on the [[Bilaspur, Chhattisgarh|Bilaspur]]-[[Katni]] line and [[Anuppur]]-[[Chirmiri]] branch line for hauling coal. Probably because of Poppet valves, they retired early.<ref name=5brinkster>{{cite web|title=5brinkster |url=http://sundar.brinkster.net/Garratt.htm |deadurl=yes |archiveurl=https://web.archive.org/web/20131023060832/http://sundar.brinkster.net/Garratt.htm |archivedate=2013-10-23 |df= }}</ref>
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