Technical information for D1566
| TOPS Number: | 47449 | Former Number: | D1566 |
| Builder: | BR Crewe | Wheel Arrangement: | Co-Co |
| Weight: | 117 tons in running order | Tractive Effort: | 62,000lb |
| Wheelbase: | 51ft 6in | Bogie Wheelbase: | 14ft 6in |
| Bogie Pivot Centres: | 37ft 0in | Wheel Diameter: | 3ft 9in |
| Height (max): | 12ft 93/8 in | Width: | 9ft 2in |
| Length: | 63ft 7in | Min Negotiable Curve: | 4 chains |
| Max Speed: | 95mph | Fuel Tank Capacity: | 765 gal |
| Cooling Water Capacity: | Lub. Oil Capacity: | 190 gal | |
| Brakes: | Air/Vacuum | Sanding Eqpt: | None fitted |
| Engine: | Sulzer 12LDA28C | Horsepower: | 2580 |
| Cylinders: | 11.02in bore x 14.17in stroke | Main Generator: | Brush TG160-60 |
| Auxiliary Generator: | Brush TG69-28 | Traction Motors: | Brush TM64-68 |
| Gear Ratio: | 66:17 | Route Availability: | 6 |
| Coupling Restriction: | Brake Force: | 60 ton |