MK4000AC - FresnoSubber/Fresno-and-Co.-Trainbuild-Tomfuckery GitHub Wiki
Have you always wanted an ALCo powered locomotive but with AC traction motors? Need a direct replacement for your clapped out ALCo/MLW based power but also want something that will futureproof your railroad for years to come? The MK4000AC is the answer!
A late production MK4000AC, riding on a pair of MPI Passive Steering C trucks, sits next to a much earlier production MK4000C built with an MLW style comfort cab, no doubt inspired by GE's C44-9WL.
The Morrison-Knudsen 4,000hp Alternating Current is a fictional/"what if" offering in MK Rail's MKx000 series of diesel locomotives. Production would've started in August 1994 and ended in December 2004 in the US market (thanks to the EPA's Tier 2 emissions standards taking effect on January 1st, 2005) and some time later in the 2000s for other markets such as Australia, South America and isolated railways in Canada (December 1999 for the standard cab units, one month after the merger between MK Rail successor MotivePower Industries and the Westinghouse Air Brake Company, creating Wabtec). Those built after Morrison-Knudsen's bankruptcy declaration in May 1996 would've likely have been renamed to "MP4000AC" to reflect the spun off firm's new name and their desire to distance themselves from the sinking ship that was their parent company, and the ones built from January 2003 onwards would have their existing name shortened to "MP40AC" to line up with MPI's newer offerings going into the 2000s (MP36PH-3S, MP14B, MP21B.etc).
RLC PT2 Specific Information
| General Info | - |
|---|---|
| Engine | BBD 16-251+ |
| Power Output | 4,000hp |
| Truck Type | Dofasco ZWT-3 Hi-Ad (1) |
| Axles | 6 |
| Traction Motors | 6 |
| Minimum Weight | 397,000lbs |
| Maximum Weight | 420,000lbs ⚠ |
| Model Base Speed | 75mph ⚠ |
| Top Speed | 75mph ⚠ |
| Electrical System | - |
|---|---|
| Alternator Max Current | 3,600A (2) (3) |
| Max Traction Motor (TM) Current | 600A (2) (3) |
| Max Continuous TM Current | 600A (2) (3) |
| Traction Motor Type | AC (ABB 6-FRA 7072 D) |
| Factor Of Adhesion | 35% |
| Transition Mode | Automatic, No Selector |
| Transition Groups | 1 |
| Transition Shunts | 1 |
| Alternator Transition | No |
| Traction Control | ETC |
| Dynamic Braking (DB) Mode (if used) | Electrically Driven TM Blowers |
| DB Max Current | 600A ⚠ |
| DB Max Continuous Current | 600A ⚠ |
| Blended Braking | No |
| Miscellaneous | - |
|---|---|
| Head End Power (HEP) | No |
| HEP Consumption | N/A |
| HEP Stand By/Run Mode | N/A |
| Load Ramp Speed | 2A/Tick |
| TM Overload Protection | N/A |
| Starter Mode | Latched Prime, Manual Start ⚠ (4) |
| Air Brake Schedule | 26L |
| Compressor CFM | 202.9 (Gardner Denver WLN @ 1,000rpm) ⚠ |
| Main Reservoir Volume | 35cu-ft ⚠ |
Notes
(1) 42" wheels were optional for those fitted with the Dofasco trucks. Could also be ordered with the "what if" M-K/MPI Passive Steering C type trucks for those who want something akin to GE's Steerable trucks or EMD's HTCRs.
(2) Values shown here are taken from the ABB 6-FXA 7059, which is similar.
(3) 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. This is done by typing "*3" (without quotes) after the number value when editing the locomotive config in the E2 editor.
(4) Later locomotives would presumably have fully automatic start.