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Sub Class: 37/0 37/3 37/4 37/5 37/6 37/7 37/9 97/3
TOPS Numbers: 37001 - 37308 37330 - 37383 37401 - 37431 37501 - 37521
37667 - 37699
37601 - 37612 37701 - 37719
37796 - 37803
37883 - 37899
37901 - 37906 97301 - 97304
BR Number: D6700 - D6999
D6600 - D6608
From main fleet From main fleet From main fleet From main fleet From main fleet From main fleet From main fleet
Built By: English Electric, Vulcan Foundry
Rober Stephenson & Hawthorn
- - - - - - -
Introduced: 1960 - 1965 1988 - 1995 1985 - 1986 1986 - 1988 1986 - 1988 1986 - 1987 1986 - 1987 2008
Wheel Arrangement: Co-Co Co-Co Co-Co Co-Co Co-Co Co-Co Co-Co Co-Co
Weight: 102-108 tonnes 102-108 tonnes 107 tonnes 107 tonnes 107 tonnes 120 tonnes 120 tonnes 105 tonnes
Height (see note 1): 12ft 9 1/16in
or 13ft 3/4in
12ft 9 1/16in
or 13ft 3/4in
13ft 3/4in 12ft 9 1/16in
or 13ft 3/4in
12ft 9 1/16in
or 13ft 3/4in
12ft 9 1/16in
or 13ft 3/4in
13ft 3/4in 12ft 9 1/16in
or 13ft 3/4in
Length: 61ft 6in 61ft 6in 61ft 6in 61ft 6in 61ft 6in 61ft 6in 61ft 6in 61ft 6in
Width: 8ft 11 5/8in 8ft 11 5/8in 8ft 11 5/8in 8ft 11 5/8in 8ft 11 5/8in 8ft 11 5/8in 8ft 11 5/8in 8ft 11 5/8in
Wheelbase: 50ft 8in 50ft 8in 50ft 8in 50ft 8in 50ft 8in 50ft 8in 50ft 8in 50ft 8in
Bogie wheelbase: 13ft 6in 13ft 6in 13ft 6in 13ft 6in 13ft 6in 13ft 6in 13ft 6in 13ft 6in
Bogie Pivot Centre: 37ft 2in 37ft 2in 37ft 2in 37ft 2in 37ft 2in 37ft 2in 37ft 2in 37ft 2in
Wheel Diameter: 3ft 7in 3ft 7in 3ft 7in 3ft 7in 3ft 7in 3ft 7in 3ft 7in 3ft 7in
Brake Type: Built with Vacuum only,
later dual braked
Dual Dual Dual Dual Dual Dual Dual
Sanding Equipment: Pneumatic Pneumatic Pneumatic Pneumatic Pneumatic Pneumatic Pneumatic Pneumatic
Heating Type: Steam (removed) Not Fitted Electric - Index 30 Not Fitted Not Fitted Not Fitted Not Fitted Not Fitted
Train Heat Alternator: Not Fitted Not Fitted Brush BAH 701 Not Fitted Not Fitted Not Fitted Not Fitted Not Fitted
Route Availability: 5 5 5 5 5 7 7 5
Multiple working: Blue Star Blue Star Blue Star Blue Star Blue Star & DRS Blue Star Blue Star Blue Star
Brake Force: 50 tonnes 50 tonnes 50 tonnes 50 tonnes 50 tonnes 50 tonnes 50 tonnes 50 tonnes
Engine Type: EE 12CSVT EE 12CSVT EE 12CSVT EE 12CSVT EE 12CSVT EE 12CSVT Mirrlees MB 275T (37901-4)
Ruston RX 270T (37905/6)
EE 12CSVT
Engine Horsepower: 1,750hp 1,750hp 1,750hp 1,750hp 1,750hp 1,750hp 1,800hp 1,750hp
Power at Rail: 1,250hp 1,250hp 1,250hp 1,250hp 1,250hp 1,250hp 1,300hp 1,250hp
Tractive Effort: 55,500lb 56,180lb 57,440lb 55,590lb 55,500lb 61,910lb 62,000lb (37901-4)
62,680lb (37905/6)
55,500lb
Cylinder Bore: 10in 10in 10in 10in 10in 10in 10¼in 10in
Cylinder Stroke: 12in 12in 12in 12in 12in 12in 12¼in 12in
Main Generator Type: EE 822/10G, EE822-13G or EE822-16J EE 822/10G, EE822-13G or EE822-16J N/A N/A N/A N/A N/A EE 822/10G, EE822-13G or EE822-16J
Main Alternator Type: N/A N/A Brush BA1005A Brush BA1005A Brush BA1005A Brush BA1005A
GEC G564AZ (37796-37803)
Brush BA1005A
GEC G564AZ (37905/6)
N/A
Auxiliary Generator Type: EE911/5C EE911/5C N/A N/A N/A N/A N/A EE911/5C
Auxiliary Alternator Type: N/A N/A Brush BAA606A Brush BAA606A Brush BAA606A Brush BAA606A
G658A, 659AZ or 658BY (37796-37803)
Brush BA606A (37901-4)
GEC 564 (37905/6)
N/A
Number of Traction Motors: 6 6 6 6 6 6 6 6
Gear Ratio: 53:18 59:16 59:16 59:16 59:16 59:16 59:16 53:18
Fuel Tank Capacity (See note 2): 890gal or 1690gal 1690gal 1690gal 1690gal 1690gal 1690gal 1690gal 1690gal
Cooling Water Capacity: 160gal 160gal 160gal 160gal 160gal 160gal 160gal 160gal
Boiler Water Capacity (See note 2): 800gal N/A N/A N/A N/A N/A N/A N/A
Boiler Fuel Capacity From Main Supply N/A N/A N/A N/A N/A N/A N/A
Lubrication Oil Capacity: 120gal 120gal 120gal 120gal 120gal 120gal 120gal 120gal

Notes:

1: Locomotives fitted with body mounted horns are 12ft 9 1/16in in height, those with roof mounted horns are 13ft 3/4in in height.

2: Following the removal of the steam heating system, the steam boiler water tank was converted to an additional fuel tank, to provided an extra 800 gallons capacity.

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