C425 - MagnumMacKivler/RLCPT2 GitHub Wiki
Image Copyright flickr user Mike Robbins
The C425 was first introduced in late 1964 when Erie Lackawanna allegedly asked Alco if they could produce a 2500 horsepower version of the C424, finding a reasonable amount of orders the model became standard in the Century series line up. Due to it's solid and reliable design, C425s are plentiful on Alco short lines, making up the majority of GVT's four-axle power.
PT-Specific Information
| General Info | - |
|---|---|
| Prime Mover | ALCO 16-251C |
| Horsepower | 2500 |
| Truck Type | AAR Type B (1) |
| Axles | 4 |
| Traction Motors | 4 |
| Minimum Weight | 256,000 lbs |
| Maximum Weight | 274,000 lbs |
| Model Base Speed | 70 MPH (2) |
| Top Speed | 70, 80, or 86 MPH (2) |
| Electrical System | - |
|---|---|
| Generator Max Current | 3600 Amps |
| Max Traction Motor (TM) Current | 1800 Amps |
| Max Continuous TM Current | 1085 Amps (3) |
| Traction Motor Type | DC |
| Factor of Adhesion | 25% (1) |
| Transition Mode | Automatic with Selector |
| Transition Groups | 2, 2, 1, 1 |
| Transition Shunts | 1, 0.75, 1, 0.75 |
| Generator Transition | No |
| Traction Control | APR |
| Dynamic Braking (DB) Mode (if used) | Mechanical Blowers @ 50% |
| DB Max Current | 830 Amps |
| DB Max Continuous Current | 830 Amps |
| Blended Braking | No |
| Miscellaneous | - |
|---|---|
| Head-End Power (HEP) | No |
| HEP Power Consumption | N/A |
| HEP Standby/Run Mode | N/A |
| Load Ramp Speed | 10 Amps/Tick |
| TM Overload Protection | No |
| Starter Mode | Latched Primer, Manual Start |
| Air Brake Schedule | 26-L |
| Compressor CFM | 236.25 (Wabco 3CDC @ 1050 RPM) |
| Main Reservoir Volume | 35.2 Cubic Feet |
Notes
⚠: Not Verified or Educated Guess
(1): Late production C425s could be bought with Alco's two-axle Hi-Ad trucks, boosting the adhesion to 29%.
(2): Later in production the gearing options changed, making the base speed 67 MPH and the max speeds 67, 75, 79, or 84 MPH
(3): Later Alcos had newer GE 752 traction motors, changing this rating to 1195 Amps.