CLASS 46 'Peak'

TOPS number range:

46001-46056

1957 BR number range:

D135-D193

Former class code:

25/1A

Built by:

BR Derby

Year introduced:

1961-1963

Wheel arrangement:

1Co-Co1

Weight:

138 tonnes

Height:

12ft 101/8in (3.91m)

Length:

67ft 11in (20.70m)

Width:

8ft 101/8in (2.70m)

Wheelbase:

59ft 8in (18.18m)

Bogie wheelbase:

21ft 6in (6.55m)

Bogie pivot centres:

32ft 8in (9.95m)

Wheel diameter:

Min curve negotiable:

5 chains (100.58m)

Engine type:

Sulzer 12LDA28B

Engine output:

2,500hp (1,862.5 kW)

Power at rail:

1,960hp (1,460kW)

Tractive effort:

55,000lb (245kN)

Cylinder bore:

11in (0.27m)

Cylinder stroke:

14in (0.35m)

Maximum speed:

90mph (145km/h)

Brake type:

Vacuum, later Dual

Brake force:

63 tonnes

Route availability:

7

Heating type:

Steam - Spanner Mk111 or Stones OK4625

Multiple coupling type:

Not fitted

Main generator type:

Brush TG160-60

Aux generator type:

Brush TG69-28

Traction motor type:

Brush TM73-68

No of traction motors:

6

Gear ratio:

62:19

Fuel tank capacity:

790gal (3,591lit)

Cooling water capacity:

346gal (1,572lit)

Lub oil capacity:

190gal (864lit)

Boiler water capacity:

1,040gal (4,727lit)

  Present operator

  Private sector