SD9043MAC - MagnumMacKivler/RLCPT2 GitHub Wiki
A Union Pacific SD9043MAC taking a break. This locomotive is now NS SD70ACU 7274. Photo credit Mike Snow
The SD9043MAC is an SD90MAC which has the standard 4,300 horsepower EMD 710 engine (very similar to SD70MAC engines). They are very similar to their 6000 HP cousins, and are sometimes called "convertibles" for their planned (but never implemented) conversion to the 265H engine once teething problems were solved.
Most "SD90MAC" line locomotives were the SD9043MAC variant, and outlasted their true 90MAC cousins. Union Pacific and Canadian Pacific were buyers for eventual 265H conversion, along with a small batch from the CIT Financing group that would lease theirs to UP.
PT-Specific Information
| General Info | - |
|---|---|
| Prime Mover | EMD 16-710G3-ES |
| Horsepower | 4300 |
| Truck Type | EMD HTC-R II |
| Axles | 6 |
| Traction Motors | 6 |
| Minimum Weight | 415,000 lbs ⚠ |
| Maximum Weight | 435,000 lbs ⚠ |
| Model Base Speed | 75 MPH |
| Top Speed | 75 or 80 MPH |
| Electrical System | - |
|---|---|
| Generator Max Current | 4530 Amps (1) |
| Max Traction Motor (TM) Current | 755 Amps (1) |
| Max Continuous TM Current | 755 Amps (1) |
| Traction Motor Type | AC |
| Factor of Adhesion | 35% |
| Transition Mode | Automatic, no Selector |
| Transition Groups | 1 |
| Transition Shunts | 1 |
| Generator Transition | No |
| Traction Control | ETC |
| Dynamic Braking (DB) Mode (if used) | Electrical Blowers |
| DB Max Current | 755 Amps ⚠ |
| DB Max Continuous Current | 755 Amps ⚠ |
| Blended Braking | No |
| Miscellaneous | - |
|---|---|
| Head-End Power (HEP) | No |
| HEP Power Consumption | N/A |
| HEP Standby/Run Mode | N/A |
| Load Ramp Speed | 1 Amps/Tick |
| TM Overload Protection | N/A |
| Starter Mode | Fully Automatic Start |
| Air Brake Schedule | 26L |
| Compressor CFM | 254 (Gardner Denver WBO @ 900 RPM) |
| Main Reservoir Volume | 33.8 Cubic Feet ⚠ |
###Notes:
⚠: Not verified or educated guess
(1) AC electrical gear is three-phase. Value shown here is for a single phase; the value used by RLC PT2 should be 3 times the value shown.