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C428
Rika edited this page May 31, 2019
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The C428 was designed right around the time of the C430, but after the C425. Being basically a C628 sans two axles and electrical madness, the C428 was most likely an offering for higher horsepower in a lighter package; Unfortunately, none were ever produced, so the C428's reasoning may never be fully understood.
| General Info | - |
|---|---|
| Prime Mover | ALCO 16-251C |
| Horsepower | 2750 |
| 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 | 1195 Amps |
| 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 |
⚠: Not Verified or Educated Guess
(1): Late production C428s 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