T 6 - MagnumMacKivler/RLCPT2 GitHub Wiki
Image Copyright flickr user lmyers83
The T-6 was introduced to eventually replace the S-6 as Alco's 251 powered switcher. Reverting to side-mounted radiators and adding Alco's now-signature chops to the long hood, the T-6 had a very unique appearance among switchers of all builders. With the introduction of the T-6, Alco discontinued the long-running S-3 and S-4, becoming Alco's only offering for a switcher at the time; however, due to its late introduction and the market already being saturated, few units were sold. Built as more of a road unit than a switcher, many of its buyers used it in transfer service. Due to its versatility as a switcher and road unit, many units were bought by second owners and survive into the modern-day.
PT-Specific Information
| General Info | - |
|---|---|
| Prime Mover | ALCO 6-251B |
| Horsepower | 1000 |
| Truck Type | AAR Type A (1) |
| 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 (2) |
| Traction Motor Type | DC |
| Factor of Adhesion | 25% (1) |
| Transition Mode | Automatic, no Selector |
| Transition Groups | 4, 4, 2, 2 |
| Transition Shunts | 1, 0.75, 1, 0.75 |
| 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 | 26-L |
| Compressor CFM | 225 (Wabco 3CDC @ 1000 RPM) |
| Main Reservoir Volume | 35 Cubic Feet |
Notes
⚠: Not Verified or Educated Guess
(1): Later units could be ordered on Alco Hi-Ads, raising the adhesion to 29%.
(2): Later units would have a higher Max Continuous TM Current of 1195 Amps.