GP39 2 - MagnumMacKivler/RLCPT2 GitHub Wiki
An ATSF GP39-2. Santa Fe was a major purchaser of the type. Photo credit Golden State Railfan
The GP39-2 is the improved brother to the turbocharged V12 645 series GP39, and featured all new improvements much like the other "Dash 2" lineups. With a new traction motor blower duct, modular electronics, and a now standard AR10 AC alternator (compared to the former D32 DC generator), the GP39-2 was released to the market in 1974, before being pulled in 1984.
Also like the GP39, the GP39-2 did not necessarily sell majorly. Despite ten years of production, only 239 units were made, with 106 belonging to ATSF alone. In comparison, the GP38-2 was able to sell nearly 10 times as many units (2,222). These numbers made it the third-lowest produced 645 line model, only beating the SW1000 and SD38, being the lowest with 119 and 108 respectively.
A high cab example of a GP39-2, uniquely made for Kennecott Copper Co. Photo credits www.antiquesnavigator.com
PT-Specific Information
| General Info | - |
|---|---|
| Prime Mover | 12-645E3B |
| Horsepower | 2300 HP |
| Truck Type | EMD "Blomberg" M (1) |
| Axles | 4 |
| Traction Motors | 4 |
| Minimum Weight | 250,000 lbs |
| Maximum Weight | 280,000 lbs ⚠ |
| Model Base Speed | 65 MPH |
| Top Speed | 65, 70, 76, 82 MPH |
| Electrical System | - |
|---|---|
| Generator Max Current | 6000 |
| Max Traction Motor (TM) Current | 1500 |
| Max Continuous TM Current | 1050 |
| Traction Motor Type | DC |
| Factor of Adhesion | 25% |
| Transition Mode | Automatic |
| Transition Groups | 1 |
| Transition Shunts | 1 |
| Generator Transition | No |
| Traction Control | APR with sanding |
| Dynamic Braking (DB) Mode (if used) | Mechanical Blowers |
| DB Max Current | 700 |
| DB Max Continuous Current | 700 |
| 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 | 26L |
| Compressor CFM | 254 (WBO @ 900 RPM) |
| Main Reservoir Volume | 33.8 Cubic Feet |
###Notes:
(1) Blomberg B trucks were optionally offered; they also featured a 25% factor of adhesion
⚠: Not verified or educated guess