Comparison of OO 20 ton steel mineral GWR/ Private Owner models
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| Manufacturer | Airfix GMR (Great Model Railways) | Dapol |
| Year model introduced | 1979 | 2006 |
| DCC Capability | Unpowered | Unpowered |
| Detailing | ||
| Chassis/underframe detail | ||
| Brake rigging chassis |
Yes |
Yes |
| Wheel "aesthetics" | ||
| Nickel-plated | No |
Yes |
| Bufferbeam detail (pre-fitted) | ||
| Cosmetic coupling - hook only | No |
Yes |
| Mechanical | ||
| Chassis construction |
Lightweight |
Lightweight |
| Minimum radius |
Radius 1 |
Radius 1 |
| Coupling socket/mounting | ||
| NEM pockets | No |
Yes |
| Non-NEM socket |
Yes |
No |
| Coupling type |
Tension lock |
Tension lock |
| Items in Stock | View | View |