GP35 - MagnumMacKivler/RLCPT2 GitHub Wiki
An EMD demonstrator GP35 (appropriately numbered 1964) sits alone at the 1964 New York World's Fair. This unit would go on to be owned by New York Central. Photo courtesy Chuck Zeiler
The GP35 debuted from EMD in July of 1963, and was built by EMD and Canadian subsidiary GMDD until January of 1966. The GP35 series featured a new carbody (without the hump in the cab the GP30 was famous for) which became the the basis for all future GP hood units, and all SD units up to the SD70.
The GP35 and SD35 represented EMD's 567 and its associated equipment at its absolute limit; 2500 HP was the most power EMD could squeeze out of the 567 block and the DC generators used in both units needed a large amount of transition steps to handle the power output of the motor. Within the course of two-and-a-half years of production, 1251 units were built. The GP35 was replaced by the GP40 in December of 1965.
Due to EMD trade-in programs, some GP35s rode on older style Blomberg trucks from retired EMD F units and some rode on AAR Type B trucks from ALCO RS units (see note 1).
PT-Specific Information
| General Info | - |
|---|---|
| Prime Mover | EMD 16-567D3A |
| Horsepower | 2500 |
| Truck Type | EMD "Blomberg" B (1) |
| Axles | 4 |
| Traction Motors | 4 |
| Minimum Weight | 244,800 lbs. |
| Maximum Weight | 270,000 lbs. ⚠ |
| Model Base Speed | 71 MPH |
| Top Speed | 71, 77, or 83 MPH |
| Electrical System | - |
|---|---|
| Generator Max Current | 3000 Amps |
| Max Traction Motor (TM) Current | 1500 Amps (1) |
| Max Continuous TM Current | 1000 Amps (1) |
| Traction Motor Type | DC |
| Factor of Adhesion | 25% |
| Transition Mode | Automatic with Selector |
| Transition Groups | 2, 2, 2, 2, 2, 2, 2, 1, 1, 1 |
| Transition Shunts | 1, 0.93, 0.86, 0.79, 0.72, 0.65, 0.58, 1, 0.86, 0.72 |
| Generator Transition | No |
| Traction Control | APR with sanding |
| Dynamic Braking (DB) Mode (if used) | Electrical Blowers (2) |
| DB Max Current | 700 Amps |
| DB Max Continuous Current | 700 Amps |
| 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 (3) |
| Compressor CFM | 254 (WBO @ 900 RPM) |
| Main Reservoir Volume | 28.4 Cubic Feet |
Notes:
(1): Some GP35s rode on traded in AAR Type B trucks; the following numbers would reflect the donor locomotive: Max TM Current, Max Continuous TM Current.
(2): Although listed as Electrical Blowers, they behave like Mechanical Blowers in PT2. All dynamic brake fans use a DC motor powered by tapping the grids, and engine RPM increases when the traction motors need cooling.
(3) Number 6 or 24RL were optional.
⚠: Not Verified or Educated Guess