CLASS 30 & 31

Sub Class:

30

31/0

31/1

31/4

31/5

31/6

TOPS Number range:

-

31001-31019

31101-31327

31400-31469

31507-31569

31601-31602

1957 BR number range:

D5500-D5862

D5500-D5519

D5518-D5862

From Class 31/1 fleet

From Class 31/4 fleet

From Class 31/1 fleet

Former class codes:

D12/2, later 12/2

12/2

D14/2, then 14/2

-

-

-

Built by:

Brush Ltd, Loughborough

Brush Ltd, Loughborough

Brush Ltd, Loughborough

Modified by BR

Modified by BR

Modified by Fragonset

Years introduced:

1957-1962

1957-1958

1958-1962

1970-1985

1990-1994

1999

Wheel arrangement:

A1A-A1A

A1A-A1A

A1A-A1A

A1A-A1A

A1A-A1A

A1A-A1A

Weight:

107-111 tonnes

107 tonnes

107-111 tonnes

107-111 tonnes

107-111 tonnes

107-111 tonnes

Height:

12ft 7in (3.83m)

12ft 7in (3.83m)

12ft 7in (3.83m)

12ft 7in (3.83m)

12ft 7in (3.83m)

12ft 7in (3.83m)

Length:

56ft 9in (17.29m)

56ft 9in (17.29m)

56ft 9in (17.29m)

56ft 9in (17.29m)

56ft 9in (17.29m)

56ft 9in (17.29m)

Width:

8ft 9in (2.66m)

8ft 9in (2.66m)

8ft 9in (2.66m)

8ft 9in (2.66m)

8ft 9in (2.66m)

8ft 9in (2.66m)

Wheelbase:

42ft 10in (13.05m)

42ft 10in (13.05m)

42ft 10in (13.05m)

42ft 10in (13.05m)

42ft 10in (13.05m)

42ft 10in (13.05m)

Bogie wheelbase:

14ft 0in (4.26m)

14ft 0in (4.26m)

14ft 0in (4.26m)

14ft 0in (4.26m)

14ft 0in (4.26m)

14ft 0in (4.26m)

Bogie pivot centres:

28ft 10in (8.78m)

28ft 10in (8.78m)

28ft 10in (8.78m)

28ft 10in (8.78m)

28ft 10in (8.78m)

28ft 10in (8.78m)

Wheel diameter:

Min curve negotiable:

4.5 chains (90.52m)

4.5 chains (90.52m)

4.5 chains (90.52m)

4.5 chains (90.52m)

4.5 chains (90.52m)

4.5 chains (90.52m)

Engine type:

Mirrlees JVS12T

English Electric 12SVT

English Electric 12SVT

English Electric 12SVT

English Electric 12SVT

English Electric 12SVT

Engine output:

1,250hp (1,097kW)

1,470hp (1,097kW)

1,470hp (1,097kW)

1,470hp (1,097kW)

1,470hp (1,097kW)

1,470hp (1,097kW)

Power at rail:

1,050hp (872kW)

1,170hp (872kW)

1,170hp (872kW)

1,170hp (872kW)

1,170hp (872kW)

1,170hp (872kW)

Tractive effort:

42,000lb (190kN)

42,000lb (190kN)

35,900lb (160kN)

35,900lb (160kN)

35,900lb (160kN)

Cylinder bore:

9 3/4in (0.24m)

10in (0.25m)

10in (0.25m)

10in (0.25m)

10in (0.25m)

10in (0.25m)

Cylinder stroke:

10 1/2in (0.27m)

12in (0.30m)

12in (0.30m)

12in (0.30m)

12in (0.30m)

12in (0.30m)

Maximum speed:

75mph (120km/h)

75mph (120km/h)

60mph (97km/h)

Brake type:

Vacuum

Vacuum

Vacuum, modified to Dual

Dual

Dual

Dual

Brake force:

49 tonnes

49 tonnes

49 tonnes

49 tonnes

49 tonnes

49 tonnes

Route availability:

5

5

5

6

6

5

Heating type:

Steam - Spanner Mk 1

Steam - Spanner Mk 1

Steam - Spanner Mk 1

Electric - isolated

Through wired

Multiple coupling type:

Red Circle

Red Circle

Blue star

Blue star

Blue star

Blue star

Main generator type:

Brush TG160-48

Brush TG160-48

Brush TG160-48

Brush TG160-48

Brush TG160-48

Brush TG160-48

Aux generator type:

Brush TG69-42

Brush TG69-42

Brush TG69-42

-

-

Brush TG69-42

Aux ETS alternator type:

-

-

-

Brush BL100-30

Brush BL100-30

-

Traction motor type:

Brush TM73-68

Brush TM73-68

Brush TM73-68

Brush TM73-68

Brush TM73-68

Brush TM73-68

No of traction motors:

4

4

4

4

4

4

Gear ratio:

64:17

64:17

60:19

60:19

60:19

Fuel tank capacity:

650gal (2,954lit)

650gal (2,954lit)

530gal (2,409lit)

530gal (2,409lit)

530gal (2,409lit)

530gal (2,409lit)

Cooling water capacity:

156gal (709lit)

156gal (709lit)

156gal (709lit)

156gal (709lit)

156gal (709lit)

156gal (709lit)

Lub oil capacity:

110gal (500lit)

110gal (500lit)

110gal (500lit)

110gal (500lit)

110gal (500lit)

110gal (500lit)

Boiler water capacity:

600gal (2,727lit)

600gal (2,727lit)

600gal (2,727lit)

600gal (2,727lit) (if dual heat fitted

-

600gal (2,727lit)

Boiler furl capacity:

100gal (454lit)

100gal (454lit)

100gal (454lit)

100gal (454lit) (if dual heat fitted

-

-

Sanding equipment:

Pneumatic

Pneumatic

Pneumatic

Pneumatic

Pneumatic

Pneumatic

Sub class variations:

Original as built locos under modernisation plan, fitted with Mirrlees power unit and electro magnetic control. Locos re-engined see 31/0 and 31/1s

Re-engined original electro-magnetic Modernisation Plan locos

Basic locomotives

Locos fitted with electric train supply.

31/4s with ETS isolated.

Class 31/1 fitted with through ETS control and cabling to enable operation at remote end of trains.