SW900 - MagnumMacKivler/RLCPT2 GitHub Wiki
SP SW900 #4631 rests on an unknown part of the system. Note that this unit, only one of a handful, is wearing SP's halloween paint scheme! Photo credit Craig Garver
The SW900 was an upgraded SW8. Released as part of the revised 567 line in late 1953, the SW900 (like the SW8 before it) filled a "middle ground" role in EMD's end-cab switcher roster, offering an engine that was lighter than the SW1200, but beefier than the SW600. 357 locomotives were built by EMD and GMD over a 16 lifespan; like most other EMD end cab switchers of the era, many saw long service lives and prosperous secondary careers. The SW900 was finally replaced in 1966 by the 645 line equivalent SW1000.
PT-Specific Information
| General Info | - |
|---|---|
| Prime Mover | V8-567C |
| Horsepower | 900 |
| Truck Type | AAR Type A (1) |
| Axles | 4 |
| Traction Motors | 4 |
| Minimum Weight | 220,000 lbs ⚠ |
| Maximum Weight | 230,000 lbs |
| Model Base Speed | 45 MPH (1) |
| Top Speed | 45 MPH (1) |
| Electrical System | - |
|---|---|
| Generator Max Current | 3000 Amps |
| Max Traction Motor (TM) Current | 1500 Amps |
| Max Continuous TM Current | 900 Amps ⚠ |
| Traction Motor Type | DC |
| Factor of Adhesion | 25% |
| Transition Mode | Service Selector |
| Transition Groups | 2, 2, 1, 1 |
| Transition Shunts | 1, 0.53, 1, 0.53 ⚠ |
| Generator Transition | No |
| Traction Control | APR |
| Dynamic Braking (DB) Mode (if used) | N/A |
| DB Max Current | N/A |
| DB Max Continuous Current | N/A |
| Blended Braking | No |
| Miscellaneous | - |
|---|---|
| Head-End Power (HEP) | No |
| HEP Power Consumption | N/A |
| HEP Standby/Run Mode | N/A |
| Load Ramp Speed | 2 Amps/Tick ⚠ |
| TM Overload Protection | No |
| Starter Mode | Manual Primer, Manual Start |
| Air Brake Schedule | 6BL (USA) or 6SL (CAN) (2) |
| Compressor CFM | 230 (Gardner Denver WBO @ 835 RPM ) |
| Main Reservoir Volume | 28 Cu.Ft ⚠ |
Notes
⚠: Not Verified or Educated Guess
(1): The Flexicoil B was optional; if a unit was equipped with it, its base speed would be 65 and top speed 65.
(2): 26L was optional after its introduction in 1956.