GP49 - MagnumMacKivler/RLCPT2 GitHub Wiki
An Alaska Railroad GP49 has its builder's photo taken; Photo hosting credit to alaskarails.com
The GP49 is a variant of GP50 locomotive, equipped with a V12 version of the GP50's V16 645F3B engine. The GP49, otherwise identical to the GP50, was an improvement of the GP39-2 locomotive. Much like the GP39-2 compared to the GP40-2, the GP49 can visually be spotted on its radiator section; it has two fans instead of the standard 3 for normal V16 carbodies.
The GP49 was produced for its sole purchaser, the Alaska Railroad, in two batches: one in September 1983, and the other in May 1985, giving the unit a mere 1 & 3/4 year production life. The GP49 line only had 9 locomotives ever made, compared to 239 GP39-2s.
Two GP49s were converted over to 6 A-1-A axle locomotives for a Ferronor S.A, a Chilean railway, that purchased them from the Alaska RR. These locomotives still only retain 4 powered axles, as the one in the middle is not powered to make the locomotive's weight more widely distributed.
PT-Specific Information
| General Info | - |
|---|---|
| Prime Mover | 12-645F3B |
| Horsepower | 2800 HP |
| Truck Type | EMD "Blomberg" M |
| Axles | 4 |
| Traction Motors | 4 |
| Minimum Weight | 250,000 lbs |
| Maximum Weight | 280,000 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 | 1170 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 |
| Air Brake Schedule | 26L |
| Compressor CFM | 269.2 (WBO @ 954 RPM) |
| Main Reservoir Volume | 35 Cubic Feet |
###Notes:
⚠: Not verified or educated guess