.Extensions
Comparison of OO 4-6-0 Class 4073 Castle GWR models
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| Manufacturer | Hornby Dublo | Airfix GMR (Great Model Railways) | Airfix GMR (Great Model Railways) | Hornby | Hornby |
| Year model introduced | 1957 | 1979 | 2005 | 2010 | 2023 |
| DCC Capability | DCC incompatible | Motor fitted but no DCC socket. Ringfield motor | DCC Ready. 8-pin socket | DCC Ready. 8-pin socket | DCC Ready. 21-pin socket |
| Detailing | |||||
| Bodyshell - factory-fitted separate details | |||||
| Chimney | No | No |
Yes |
Yes |
Yes |
| Coal load(s) | No | No | No |
Yes |
Yes |
| Drain cocks | No | No | No |
Yes |
Yes |
| Handrails |
Yes |
No |
Yes |
Yes |
Yes |
| Injector | No | No | No |
Yes |
Yes |
| Injector pipework | No | No | No |
Yes |
Yes |
| Lamp irons | No | No | No |
Yes |
Yes |
| Nameplates - etched - pre-fitted | No | No | No |
Yes |
Yes |
| Numberplates - plastic - require fitting | No | No | No |
Yes |
Yes |
| Pipe work | No | No | No |
Yes |
Yes |
| Regulator linkage | No | No | No |
Yes |
Yes |
| Release valve | No | No | No |
Yes |
Yes |
| Reverser |
Yes |
No |
Yes |
No | No |
| Safety valve |
Yes |
No |
Yes |
Yes |
Yes |
| Smokebox door dart | No | No | No |
Yes |
Yes |
| Smokebox door numberplate | No | No | No |
Yes |
Yes |
| Tender handbrakes | No | No |
Yes |
No | No |
| Tender water tank | No | No | No |
Yes |
Yes |
| Whistle | No | No |
Yes |
Yes |
Yes |
| Whistle - turned brass |
Yes |
No | No | No | No |
| Chassis/underframe detail | |||||
| Brake rigging chassis | No | No |
Yes |
No | No |
| Correct-thickness "stamped" rods | No | No | No |
Yes |
Yes |
| Fluted connecting rods with oily finish | No | No | No |
Yes |
Yes |
| Footsteps | No | No | No |
Yes |
Yes |
| Inside valve gear | No | No | No |
Yes |
Yes |
| Lubricator mechanism | No | No | No |
Yes |
Yes |
| Pipework | No | No | No |
Yes |
Yes |
| Sanding gear | No | No | No |
Yes |
Yes |
| Sprung front bogie | No | No | No |
Yes |
Yes |
| Cab, footplate & interior detail | |||||
| Detailed & painted | No | No | No |
Yes |
Yes |
| Fallplate | No | No | No |
Yes |
Yes |
| Glazing | No | No |
Yes |
Yes |
Yes |
| Tender | |||||
| Has easy-to-use coupling to loco | No | No |
Yes |
No | No |
| Has enclosure for speaker | No | No | No |
Yes |
Yes |
| Houses digital decoder | No | No | No |
Yes |
Yes |
| Houses PCB | No | No | No |
Yes |
Yes |
| Permanently coupled to locomotive |
Yes |
No | No | No | No |
| Wheel "aesthetics" | |||||
| Chemically-blackened | No | No | No |
Yes |
Yes |
| Coloured-plastic | No | No |
Yes |
No | No |
| Nickel-plated | No | No |
Yes |
No | No |
| Painted |
Yes |
No | No |
Yes |
Yes |
| Bufferbeam detail (pre-fitted) | |||||
| Pipework - pre-fitted to front | No | No |
Yes |
Yes |
Yes |
| Pipework - pre-fitted to rear | No | No |
Yes |
Yes |
Yes |
| Sprung buffers | No | No | No |
Yes |
Yes |
| Bufferbeam detail (in detailing pack) | |||||
| Cosmetic coupling | No | No | No |
Yes |
Yes |
| NEM Couplings | No | No | No |
Yes |
Yes |
| Mechanical | |||||
| Body Construction | No | No | No |
Plastic with metal parts |
Plastic with metal parts |
| Chassis construction |
Diecast |
No |
Diecast |
Diecast |
Diecast |
| Loco-driven wheels (number of) |
2 wheels |
No |
2 wheels |
2 wheels |
2 wheels |
| Minimum radius |
Radius 1 |
No |
Radius 2 |
Radius 2 |
Radius 2 |
| Coupling socket/mounting | |||||
| Fixed |
Yes |
No | No | No | No |
| NEM pockets | No | No | No |
Yes |
Yes |
| Non-NEM socket | No | No |
Yes |
No | No |
| Coupling type |
Peco style |
No |
Tension lock |
Tension lock |
Tension lock |
| Weighting (to assist adhesion) | |||||
| Within boiler | No | No | No |
Yes |
Yes |
| Within chassis |
Yes |
No | No |
Yes |
Yes |
| Within tender | No | No |
Yes |
Yes |
Yes |
| Separating the body from the chassis |
Secured with one or more screws |
No |
Secured with one or more screws |
Secured with one or more screws |
Secured with one or more screws |
| Electrical | |||||
| Motor type |
3-pole |
No |
Ringfield |
5-pole with flywheel |
5-pole with flywheel |
| Motor location |
Locomotive |
No |
Locomotive |
Locomotive |
Locomotive |
| Power collection |
2 rail DC |
No |
2 rail DC |
2 rail DC |
2 rail DC |
| Pickups |
Driving and trailing wheels only |
No |
Locomotive only |
Driving wheels and tender wheels |
Driving wheels and tender wheels |
| DCC speaker |
No provision for speaker |
No |
No provision for speaker |
Provision for 28mm round speaker |
Provision for 28mm round speaker |
| Items in Stock | View | View | View | View | View |