SD40 2 - MagnumMacKivler/RLCPT2 GitHub Wiki
Image Copyright 2009 Michael Eby
The SD40-2 was introduced by EMD in 1972 as part of the "dash 2" line, and was the replacement for the SD40. Featuring a modular electrical system and the new adhesion-boosting HTC truck, the SD40-2 built off of the SD40's strong points while improving upon it's shortcomings, such as it's average electrical reliability. 3,982 SD40-2s were built, making it one of most successful locomotives of all time.
PT-Specific Information
| General Info | - |
|---|---|
| Prime Mover | EMD 16-645E3C |
| Horsepower | 3000 |
| Truck Type | EMD HTC (1) |
| Axles | 6 |
| Traction Motors | 6 |
| Minimum Weight | 368000 lbs |
| Maximum Weight | 420000 lbs |
| Model Base Speed | 65 MPH |
| Top Speed | 65,70,76,82 MPH |
| Electrical System | - |
|---|---|
| Generator Max Current | 6000 Amps |
| Max Traction Motor (TM) Current | 1500 Amps |
| Max Continuous TM Current | 1050 Amps |
| Traction Motor Type | DC |
| Factor of Adhesion | 27% (1) |
| Transition Mode | Automatic, no selector (2) |
| Transition Groups | 2, 1, 1 ⚠ |
| Transition Shunts | 1, 1, 0.5 ⚠ |
| Generator Transition | No |
| Traction Control | APR + Sand |
| Dynamic Braking (DB) Mode (if used) | Mechanical Blowers |
| 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 | 26-L |
| Compressor CFM | 255.1 (WBO @ 904 RPM) |
| Main Reservoir Volume | 35 Cubic Feet |
Notes
(1): Conrail SD40-2s rode on Flexicoil C trucks. The Flexicoil C has 25% Adhesion.
(2): SD40-2s could optionally be equipped with the older "composite" EMD control stands that gave Automatic Transition with Selector.
⚠: Not Verified or Educated Guess