SB 8 - MagnumMacKivler/RLCPT2 GitHub Wiki
Image Copyright flickr user Robert Thomson
The SB-8 was the calf unit offering for the S-6, the cow-calf pair being referred to as an SSB-9. Mechanically the same as the S-6, the only major difference was the lack of a control cab. Unfortunately, only two sets were built, and none of the calves from either set are known to exist.
PT-Specific Information
| General Info | - |
|---|---|
| Prime Mover | ALCO 6-251B |
| Horsepower | 900 |
| Truck Type | AAR Type A |
| Axles | 4 |
| Traction Motors | 4 |
| Minimum Weight | 196,000 lbs |
| Maximum Weight | 248,000 lbs |
| Model Base Speed | 60 MPH |
| Top Speed | 60 MPH |
| Electrical System | - |
|---|---|
| Generator Max Current | 1800 Amps |
| Max Traction Motor (TM) Current | 1800 Amps |
| Max Continuous TM Current | 1085 Amps |
| Traction Motor Type | DC |
| Factor of Adhesion | 25% |
| Transition Mode | Automatic, no Selector |
| Transition Groups | 4,2 (1) |
| Transition Shunts | 1, 1 (1) |
| Generator Transition | No |
| Traction Control | APR |
| Dynamic Braking (DB) Mode (if used) | N/A |
| DB Max Current | N/A |
| DB Max Continuous Current | N/A |
| Blended Braking | No |
| Miscellaneous | - |
|---|---|
| Head-End Power (HEP) | No |
| HEP Power Consumption | N/A |
| HEP Standby/Run Mode | N/A |
| Load Ramp Speed | 10 Amps/Tick |
| TM Overload Protection | No |
| Starter Mode | Latched Primer, Manual Start |
| Air Brake Schedule | 6-SL (2) |
| Compressor CFM | 225 (Wabco 3CDC @ 1000 RPM) |
| Main Reservoir Volume | 35 Cubic Feet |
Notes
⚠: Not Verified or Educated Guess
(1): Field shunting was available, making Transition Groups 4, 4, 2, 2 and Transition Shunts 1, 0.75, 1, 0.75.
(2): 26L could be found on later units.