Compare OO 4-6-2 Class 7MT Britannia BR
|   |   |  |   | |
| Manufacturer | Tri-ang | Hornby | Hornby | Hornby | 
| Year model introduced | 1960 | 1981 | 2000 | 2006 | 
| DCC Capability | DCC compatible but no socket. Complete rewire required - OO | Motor fitted but no DCC socket. Ringfield motor | DCC Ready. 8-pin socket | DCC Ready. 8-pin socket | 
| Detailing | ||||
| Bodyshell - factory-fitted separate details | ||||
| Handrails | No | Yes | Yes | No | 
| Pipe work | No | No | Yes | No | 
| Regulator linkage | No | Yes | Yes | No | 
| Safety valves - turned brass | Yes | Yes | Yes | No | 
| Smoke deflectors | Yes | No | No | No | 
| Tender ladder | No | No | Yes | No | 
| Whistle | Yes | Yes | Yes | No | 
| Chassis/underframe detail | ||||
| Brake rigging chassis | No | No | Yes | No | 
| Cab, footplate & interior detail | ||||
| Glazing | No | No | Yes | No | 
| Tender | ||||
| Has easy-to-use coupling to loco | Yes | Yes | Yes | No | 
| Wheel "aesthetics" | ||||
| Chemically-blackened | Yes | Yes | Yes | No | 
| Nickel-plated | No | Yes | Yes | No | 
| Bufferbeam detail (pre-fitted) | ||||
| Sprung buffers | No | No | Yes | No | 
| Bufferbeam detail (in detailing pack) | ||||
| Pipework (for rear) | No | No | Yes | No | 
| Mechanical | ||||
| Chassis construction | Diecast | Diecast | Plastic & metal | No | 
| Loco-driven wheels (number of) | 2 wheels | None | None | No | 
| Minimum radius | Radius 1 | Radius 2 | Radius 2 | No | 
| Coupling socket/mounting | ||||
| Fixed | Yes | Yes | Yes | No | 
| Coupling type | Tension lock | Tension lock | Tension lock | No | 
| Weighting (to assist adhesion) | ||||
| Within tender | No | Yes | Yes | No | 
| Separating the body from the chassis | Secured with one or more screws | Secured with one or more screws | Secured with one or more screws | No | 
| Electrical | ||||
| Motor type | 3-pole | Ringfield | Ringfield | No | 
| Motor location | Locomotive | Tender | Tender | No | 
| Power collection | 2 rail DC | 2 rail DC | 2 rail DC | No | 
| Pickups | 2 out of 3 axles | No | No | No | 
| DCC speaker | No provision for speaker | No provision for speaker | No provision for speaker | No | 
| Items in Stock | View | View | View | View |