The Victorian Railways X Class Diesel Electric Locomotive's 1st Series and 2nd Series were rebuilt by Freight Australia from 2001 by fitting them with older G Class Engines, replacement of the DC Generator to a Alternator, motors changed to the Type D77-B, re-gearing from 59-18 to 61-16 for higher continuous tractive effort, the frames where ballasted for higher axle loads, a newer computerised traction control system which increased adhesion to 40% and the cab was heavily modified to allow for one man operation, these locomotives are restricted to 50kph when running long end first.
after the take over of Pacific National the Rebuilt X Class where re-classified as XR and numbered 550 to 555, another 4 where built from Scratch by Pacific National.
Model: G16C-2R & G26C-2R
Engine: EMD 16-645E3B Turbo 2 Stroke
RPM: 258 Low idle, 315 idle - 908 full
Generator: EMD Type AR10-A4
Current: 7020 AMPS Continuous '600 Volts'
Traction Motors: (6) EMD Type D-77B
Gear Ratio: 61 - 16
Compressor: 3 Cylinder Type WBO, rated 2510 liters/min 315RPM
Main Reservoir: 27 Cu Ft
Axle Load: 20.6 tonnes
Tractive Effort: 365kn @ 40% Adhesion
Tractive Effort Rated: 344kn @ 17.0kph
Rated Speed: 112 kph
Main Res: 800 Kpa
Brake Pipe: 500 Kpa Max
Service Brake Equalizer: 350 Kpa, 325 Kpa Handle Off
Brake Cylinder: 315 Kpa 'Service' 375 Kpa 'Emergency'
Brake Ratio: Air 73%, Handbrake 17%
Тип: Параметры двигателя