GENERAL DESCRIPTION
The Wheel arrangement is 'BB' (i. e. the locomotive has two bogies, each of which has two individuallydriven axles).
The locomotive may be operated singly, or may be coupled, to form a twounit or a threeunit locomotive, with other locomotives which carry the 'blue star' coupling symbol.
Earlier Locos were fitted with nose end corridor doors, so that traincrews could change over on the move. This was not a succesful practice, consequently later ones were built without. Earlier locos had other differences including electromechanical power contol whereas the later ones were electronic. Ours is a later one.
GENERAL DATA
Weight in running order: 70  73 tons
Number of traction motors:4
Continuous tractive effort:20,500lb at 18mph
Maximum Tractive Effort: 46,500lb
Length over buffers: 50ft 6in
Height:12ft 8in, Width:8ft 9in.
Wheelbase:36ft 6in, Wheelbase of one bogie: 8ft 6in
Distance between bogie centres:28ft Oin
Minimum curve negotiable: 4. 5 chains radius
Total fuel capacity: 510 gal
Total coolant capacity:186 gal
Maximum permitted speed: 90 mile/h
ELECTRICAL MACHINES
MAIN GENERATOR Type A.E.I. RTB15656;
Rating (continuous) 780volts at 1050amps
AUXILIARY GENERATOR Type A.E.I. RTB7440;
Rating (continuous) 54 k.w.
TRACTION MOTORS Type A.E.I. 253AY
Rating (continuous) 650 amps at 315 volts, Gear Ratio 67:18
