GP70 - MagnumMacKivler/RLCPT2 GitHub Wiki
The GP70 was a proposed locomotive that was offered by Electro-Motive around the early 1990s. Railroads, soon realizing they no longer needed high horsepower 4 axle locomotives, strayed away from any purchases of GP70s, and opted for higher traction 6 axle locomotives instead.
Because the GP70 was never made, data for this locomotive has been compiled from information from the related SD70 and GP60 types.
PT-Specific Information
| General Info | - |
|---|---|
| Prime Mover | EMD 16-710G3A |
| Horsepower | 4000 HP (1) |
| Truck Type | EMD "Blomberg" M ⚠ |
| Axles | 4 |
| Traction Motors | 4 |
| Minimum Weight | 260,000 lbs ⚠ |
| Maximum Weight | 290,000 lbs ⚠ |
| Model Base Speed | 70 MPH |
| Top Speed | 70, 76, 82 or 88 MPH ⚠ |
| Electrical System | - |
|---|---|
| Generator Max Current | 6600 amps |
| Max Traction Motor (TM) Current | 1650 amps |
| Max Continuous TM Current | 1205 amps |
| Traction Motor Type | DC |
| Factor of Adhesion | 25% |
| Transition Mode | Automatic |
| Transition Groups | 1 |
| Transition Shunts | 1 |
| Generator Transition | Yes |
| 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 (2) |
| Air Brake Schedule | 26L |
| Compressor CFM | 254 (WBO @ 900 RPM) |
| Main Reservoir Volume | 35 Cubic Feet |
###Notes: ⚠: Not verified or educated guess
(1): Late SD70s were rated at 4300 horsepower; it is unsure if the GP70 would have had this change as well
(2): Later units would have likely had automatic starters.