GNRI Class BT

Great Northern Railway of Ireland 4-4-0T steam locomotive class

Great Northern Railway
Class BT

BT No. 1 at Irish Street Halt, Armagh, 1909

Type and origin
Power type	Steam
Designer	J.C. Park
Build date	1885
Total produced	13

Specifications
Configuration:
• Whyte	4-4-0T
Gauge	5 ft 3 in (1,600 mm)
Driver dia.	4 ft 7 in (1,397 mm)
Boiler pressure	160 lbf/in² (1,103.16 kPa)
Cylinders	Two, inside
Cylinder size	15 in × 20 in (380 mm × 510 mm)
Train heating	steam

Career
Operators	GNR(I)
Number in class	13

Great Northern Railway Class BT were a class of 13 4-4-0T tank locomotives introduced by the GNR(I) from 1885.^[1]

While fit for purpose when built, increasing train weights particularly with bogie carriages a factor meant by the 1920s they were underpowered for all available work and were withdrawn by 1921.^[2]

References

^ Rowledge (1993), p. 28.
^ Johnston (1999), p. 65–66.

Johnston, Norman (1999). Locomotives of the GNRI. Newtownards: Colourprint Books. ISBN 1-898392-48-X. OCLC 43340833.
Rowledge, Peter (1993). Irish Steam Loco Register. Stockport, England: Irish Traction Group. ISBN 9780947773335. OCLC 30815253.

v t e Steam locomotives of Ireland
Belfast and County Down Railway (1846–1948)	1 4 5 6 8 9 14 22 26 29
Belfast and Northern Counties Railway (1860–1903)	A B C D E F G H I J K L M N O P Q R S
Northern Counties Committee (1903–1949)	A1 B1 B2 B3 D1 E1 F1 K1 L1 S1 S2 U U1 U2 V W WT Y
Great Northern Railway (1876–1958)	A AL B BP BT C D E G H J JT NQG NLQG P PG PP Q QG QGTs QGT2 QL QLG QNG RT S & S2 SG & SG2 SG3 T T2 U V UG VS 203 204
Sligo, Leitrim and Northern Counties Railway (1875–1957)	Erne Faugh-a-Ballagh Glencar Leitrim Lough Pioneer Sir Henry Waterford
Cork, Bandon and South Coast Railway (1849–1924)	1, 2 1, 2, 4A, 8 2 (II) 3, 4 3, 9, 10, 18 5, 6 7 (I) 7 (II) 9, 10 11 5, 6, 12, 16, 17 14, 15 19, 20 4, 8, 11, 13, 14, 15, 19, 20 Argadeen St Molaga Slaney
Dublin and Kingstown Railway (1834–1856)	Vauxhall Hibernia Star Victoria Princess Burgoyne
Dublin and South Eastern Railway (1854–1925)	1, 2, 6–7, 9–10, 28, 44–47, 49 3, 8, 10–12, 27–30, 40, 45–46 4–5 13–14, 18, 65–66 15–16 15–23, 37–39, 48 17, 36 20, 34–35 24–26, 32–33 42–44 50–51 52–54 55–58 59–64 67–68 69–70
Great Southern and Western Railway (1845–1924)	1 2 21 23 27 33 37 41 43 44 45 28 & 47 52 56 60 62 64 90 91 92 99 100 101 102 104 110 & 112 116 117 119 122 124 133 139 144 201 203 204 207 & 217 211 213 249 & 351 257 301 305 309 321 333 341 355 362 368 400 500 900 Fairy Jumbo Sambo Sprite
Midland Great Western Railway (1847–1924)	1 2 3 4 5 6 7 7–12 8 9 10 11 12 13 14 15 16 17 18 19 A B C D D-bogie D2 E F H K L P W
Great Southern Railways (1925–1944)	280 342 372 393 495 670 700 710 800 850
Córas Iompair Éireann (1945–1962)	Turf Burner No. CC1
Tralee and Dingle Light Railway (1891–1953)	1, 2, 3, 6, 8 4 5 7, 8 (4T)
Industrial engines	CSÉT Shunting Locomotives R. H. Smyth