U23B - MagnumMacKivler/RLCPT2 GitHub Wiki
Fred Quaas photo, Craig Garver collection
The U23B was GE's first V12-equipped production locomotive, and introduced a new piece of their catalog in a middle range lower horsepower road switcher; GE would carry a 2250 horsepower 4 axle road locomotive in their catalog until 1986.
To comply with FRA clean cab regulations, and to introduce a new line of upgrades and improvements to their catalog, GE replaced the U23B with the B23-7 in 1976.
PT-Specific Information
| General Info | - |
|---|---|
| Prime Mover | GE 7FDL12F |
| Horsepower | 2250 |
| Truck Type | AAR Type B (1) |
| Axles | 4 |
| Traction Motors | 4 |
| Minimum Weight | 242,000 lbs |
| Maximum Weight | 288,000 lbs |
| Model Base Speed | 65 MPH |
| Top Speed | 65, 75, or 80 MPH ⚠ |
| Electrical System | - |
|---|---|
| Generator Max Current | 3600 Amps (2) |
| Max Traction Motor (TM) Current | 1800 Amps |
| Max Continuous TM Current | 1195 Amps |
| Traction Motor Type | DC |
| Factor of Adhesion | 25% (2) |
| Transition Mode | Automatic, no selector |
| Transition Groups | 2, 2, 1, 1 (2) |
| Transition Shunts | 1, 0.55, 1, 0.55 (2) |
| Generator Transition | No |
| Traction Control | APR + Sand |
| Dynamic Braking (DB) Mode (if used) | Mechanical Blowers (0), automatic |
| DB Max Current | 740 Amps |
| DB Max Continuous Current | 740 Amps |
| Blended Braking | No |
| Miscellaneous | - |
|---|---|
| Head-End Power (HEP) | No |
| HEP Power Consumption | N/A |
| HEP Standby/Run Mode | N/A |
| Load Ramp Speed | 3 Amps/Tick |
| TM Overload Protection | No |
| Starter Mode | Latched Primer, Manual Start |
| Air Brake Schedule | 26-L |
| Compressor CFM | 236.25 (Wabco 3CDCBL @ 1050 RPM) |
| Main Reservoir Volume | 32.4 Cubic Feet |
Notes
⚠: Not Verified or Educated Guess
(1): The FB-2 became available after 1971; the FB-2 provides better adhesion at 29%.
(2): The GTA-11 was offered later upon introduction in 1970, replacing the GT-581; it was made standard in 1973. Generator amps increases to 5400 and transition changes to 2,1 and 1,1.