| Manufacturer | Trix | Graham Farish | Trix | Graham Farish | Trix | Graham Farish | Wrenn |
| Year model introduced | 1936 | 1949 | 1953 | 1962 | 1966 | 1973 | 1974 |
| DCC Capability | Unpowered | Unpowered | Unpowered | Unpowered | Unpowered | Unpowered | Unpowered |
| Detailing | |||||||
| Chassis/underframe detail | |||||||
| Brake rigging chassis | No |
Yes |
No |
Yes |
Yes |
Yes |
Yes |
| Wheel "aesthetics" | |||||||
| Chemically-blackened | No | No | No | No |
Yes |
No | No |
| Nickel-plated | No | No | No | No | No | No |
Yes |
| Mechanical | |||||||
| Chassis construction |
Diecast |
Diecast |
Diecast |
Diecast |
Lightweight |
No |
Lightweight |
| Minimum radius |
Radius 1 |
Radius 1 |
Radius 1 |
Radius 1 |
Radius 1 |
Radius 1 |
Radius 1 |
| Coupling socket/mounting | |||||||
| Fixed |
Yes |
Yes |
No |
Yes |
Yes |
Yes |
Yes |
| Coupling type |
Peco style |
Tension lock |
Peco style |
Tension lock |
Peco style |
Tension lock |
Tension lock |
| Weighting (to assist adhesion) | |||||||
| Within chassis | No | No | No | No | No |
Yes |
No |
| Separating the body from the chassis | No | No | No | No |
Secured with one or more screws |
Body clips off from chassis |
Secured with one or more screws |
| Electrical | |||||||
| Power collection | No | No |
2 or 3 rail DC |
No |
2 or 3 rail DC |
No | No |
| Working lights | |||||||
| Interior lighting | No | No |
Yes |
No |
Yes |
No | No |
| Tail lights (independent) | No | No |
Yes |
No |
Yes |
No | No |
| Pickups | No | No | No | No |
All wheels |
No | No |
| Items in Stock | View | View | View | View | View | View | View |
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