F7 - MagnumMacKivler/RLCPT2 GitHub Wiki
An A-B-A set of F7 locomotives used by EMD as demonstrators for railroad customers. Photo credit Electro-Motive Division
The EMD F7 locomotive was a 1,600 upgrade to the EMD F3 in the F-unit series (A series of 4 axle, streamlined freight locomotives). The F7 was the best selling type in the F-unit class, with 3856 (2,393 cab-equipped A units and 1,463 cabless B units) locomotives being made between February 1949 and December 1953. While most of these locomotives were in freight service, the Atchison, Topeka, and Santa Fe railroad used A-B-B-A sets on passenger trains.
The F7 was later surpassed by the F9 series in 1953
PT-Specific Information
| General Info | - |
|---|---|
| Prime Mover | EMD 16-567B |
| Horsepower | 1500 |
| Truck Type | EMD "Blomberg" B |
| Axles | 4 |
| Traction Motors | 4 |
| Minimum Weight | 240,000 lbs |
| Maximum Weight | 260,000 lbs ⚠ |
| Model Base Speed | 65 MPH |
| Top Speed | 55, 65, 71, 77, 83, or 89 |
| Electrical System | - |
|---|---|
| Generator Max Current | 3000 Amps |
| Max Traction Motor (TM) Current | 1500 Amps |
| Max Continuous TM Current | 825 Amps |
| Traction Motor Type | DC |
| Factor of Adhesion | 25% |
| Transition Mode | Automatic with Selector |
| Transition Groups | 2, 1 |
| Transition Shunts | 1, 1 |
| Generator Transition | No |
| Traction Control | APR |
| Dynamic Braking (DB) Mode (if used) | Mechanical Blowers @ 37.5% |
| DB Max Current | 1500 Amps |
| DB Max Continuous Current | 600 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 | 24-RL (1) |
| Compressor CFM | 178 (Gardner Denver WXE @ 800 RPM) |
| Main Reservoir Volume | 42.9 Cubic Feet |
Notes:
⚠: Not Verified or Educated Guess
(1): Units could also come with 6-BL (US) or 6SL (CAN) brake schedules.