J.N.R. Steam Locomotives (post-1919)

All dimensions metric: lengths in mm, areas in m², weights in metric tons, pressures in atmospheres.

Class Axle
Arr. Dr.
Dia. Cylinders
Dia. x Str. B.P. Ad
Wt EW
WO Grate
Area Evap
Surf Sup.
Surf Remarks

B10 2'B1't 1400 406x559 12 26 48 1.3 73 none Ex 5500

B20 Bt 860 300x400 13 20 20 0.8 36 none

B50 2'B 1600 430x610 12 28 44 1.6 78 32

C10 1'C1't 1520 450x610 14 38 70 1.6 74 30 Later 15atm

C11 1'C2't 1520 450x610 14 39 68 1.6 74 30 Later 15atm

C12 1'C1't 1400 400x610 14 32 50 1.3 54 20 C56 tank

C50 1'C 1600 470x610 14 43 53 1.6 82 29

C51 2'C1' 1750 530x660 13 45 70 2.5 126 41 Was 18900

C52 2'C1' 1600 450x660(3) 12.7 47 82 3.8 174 53 Was 8200

C53 2'C1' 1750 450x660(3) 14 46 81 3.3 156 64

C54 2'C1' 1750 510x660 14 42 69 2.5 126 41

C55 2'C1' 1750 510x660 14 41 66 2.5 126 41

C55 2'C1' 1750 510x660 14 42 68 2.5 126 41 Streamlined

C56 1'C 1400 400x610 14 32 38 1.3 54 20

C57 2'C1' 1750 500x660 16 41 68 2.5 126 41

C58 1'C1' 1520 480x610 16 40 57 2.1 137 42

C59.0 2'C1' 1750 520x660 16 49 80 3.3 170 71

C59.1 2'C1' 1750 520x660 16 48 80 3.3 137 81

C60.0 2'C'2 1750 520x660 16 45 83 3.3 170 71 Ex C59.0

C60.1 2'C'2 1750 520x660 16 44 81 3.3 137 81 Ex C59.1

C61 2'C2' 1750 500x660 15 41 79 3.3 158 64

C62 2'C2' 1750 520x660 16 49 89 3.9 167 78 D52 boiler

C63 1'C1' 1520 450x610 18 42 64 2.4 152 41 Project

D50 1'D1' 1400 570x660 13 59 78 3.3 158 64 Was 9900

D51 1'D1' 1400 550x660 14 58 77 3.3 158 64 Original

D51 1'D1' 1400 550x660 15 60 78 3.3 158 64 Post-war

D52 1'D1' 1400 550x660 16 65 84 3.9 167 78

D60 1'D2' 1400 550x660 13 55 82 3.3 158 64 Ex D50

D61 1'D2' 1400 550x660 14 55 79 3.3 158 64 Ex D51

D62 1'D2' 1400 550x660 16 64 88 3.9 167 78 Ex D52

E10 1'E2't 1250 550x660 16 70 100 3.3 158 64 D51 boiler

E50 1'E1' 1250 550x660 16 70 88 3.9 182 80 Project

Class	Axle Arr.	Dr. Dia.	Cylinders Dia. x Str.	B.P.	Ad Wt	EW WO	Grate Area	Evap Surf	Sup. Surf	Remarks
B10	2'B1't	1400	406x559	12	26	48	1.3	73	none	Ex 5500
B20	Bt	860	300x400	13	20	20	0.8	36	none
B50	2'B	1600	430x610	12	28	44	1.6	78	32
C10	1'C1't	1520	450x610	14	38	70	1.6	74	30	Later 15atm
C11	1'C2't	1520	450x610	14	39	68	1.6	74	30	Later 15atm
C12	1'C1't	1400	400x610	14	32	50	1.3	54	20	C56 tank
C50	1'C	1600	470x610	14	43	53	1.6	82	29
C51	2'C1'	1750	530x660	13	45	70	2.5	126	41	Was 18900
C52	2'C1'	1600	450x660(3)	12.7	47	82	3.8	174	53	Was 8200
C53	2'C1'	1750	450x660(3)	14	46	81	3.3	156	64
C54	2'C1'	1750	510x660	14	42	69	2.5	126	41
C55	2'C1'	1750	510x660	14	41	66	2.5	126	41
C55	2'C1'	1750	510x660	14	42	68	2.5	126	41	Streamlined
C56	1'C	1400	400x610	14	32	38	1.3	54	20
C57	2'C1'	1750	500x660	16	41	68	2.5	126	41
C58	1'C1'	1520	480x610	16	40	57	2.1	137	42
C59.0	2'C1'	1750	520x660	16	49	80	3.3	170	71
C59.1	2'C1'	1750	520x660	16	48	80	3.3	137	81
C60.0	2'C'2	1750	520x660	16	45	83	3.3	170	71	Ex C59.0
C60.1	2'C'2	1750	520x660	16	44	81	3.3	137	81	Ex C59.1
C61	2'C2'	1750	500x660	15	41	79	3.3	158	64
C62	2'C2'	1750	520x660	16	49	89	3.9	167	78	D52 boiler
C63	1'C1'	1520	450x610	18	42	64	2.4	152	41	Project
D50	1'D1'	1400	570x660	13	59	78	3.3	158	64	Was 9900
D51	1'D1'	1400	550x660	14	58	77	3.3	158	64	Original
D51	1'D1'	1400	550x660	15	60	78	3.3	158	64	Post-war
D52	1'D1'	1400	550x660	16	65	84	3.9	167	78
D60	1'D2'	1400	550x660	13	55	82	3.3	158	64	Ex D50
D61	1'D2'	1400	550x660	14	55	79	3.3	158	64	Ex D51
D62	1'D2'	1400	550x660	16	64	88	3.9	167	78	Ex D52
E10	1'E2't	1250	550x660	16	70	100	3.3	158	64	D51 boiler
E50	1'E1'	1250	550x660	16	70	88	3.9	182	80	Project