Technical data for 37240, kindly provided by Martin Corbett
| TOPS Number: | 37240 | Former Number: | D6940 |
| Builder: | English Electric Vulcan Foundry | Wheel Arrangement: | Co-Co |
| Weight: | 105 ton in running order | Tractive Effort: | 55,500lb |
| Wheelbase: | 50ft 8in | Bogie Wheelbase: | 13ft 6in |
| Bogie Pivot Centres: | 37ft 2in | Wheel Diameter: | 3ft 9in |
| Height (max): | 12ft 91/16 in | Width: | 8ft 103/8 in |
| Length: | 61ft 6in | Min Negotiable Curve: | 4 chains |
| Max Speed: | 80mph | Fuel Tank Capacity: | 1690 gal |
| Cooling Water Capacity: | 160 gal | Lub. Oil Capacity: | 120 gal |
| Brakes: | Air/Vacuum | Sanding Eqpt: | Pneumatic |
| Engine: | EE12CSVT | Horsepower: | 1750 |
| Cylinders: | 10in bore x 12in stroke | Main Generator: | EE822/10G |
| Auxiliary Generator: | EE911/5C | Traction Motors: | EE538/A |
| Gear Ratio: | 53:18 | Route Availability: | 5 |
| Coupling Restriction: | Blue Star | Brake Force: | 50 ton |