Comparison of OO Class 91 models
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| Manufacturer | Hornby | Hornby | Hornby |
| Year model introduced | 1990 | 2013 | 2022 |
| DCC Capability | DCC compatible but no socket | DCC Ready. 8-pin socket | DCC Ready. 21-pin socket |
| Detailing | |||
| Bodyshell - factory-fitted separate details | |||
| Air Conditioning Unit | No | No |
Yes |
| Door handles | No | No |
Yes |
| Handrails | No | No |
Yes |
| Nameplates - etched - require fitting | No | No |
Yes |
| Pantograph - Brecknell Willis high-speed |
Yes |
Yes |
Yes |
| Roof-mounted electrical components |
Yes |
Yes |
Yes |
| Chassis/underframe detail | |||
| Electrical equipment | No | No |
Yes |
| Footsteps | No | No |
Yes |
| Sanding gear | No | No |
Yes |
| Cab, footplate & interior detail | |||
| Detailed & painted | No | No |
Yes |
| Glazing |
Yes |
Yes |
Yes |
| Window wipers | No | No |
Yes |
| Wheel "aesthetics" | |||
| Chemically-blackened | No | No |
Yes |
| Traction tyres |
Yes |
Yes |
No |
| Bufferbeam detail (pre-fitted) | |||
| Buffing plate | No | No |
Yes |
| Cosmetic coupling - hook only | No | No |
Yes |
| Electric train heating box/ pipes | No | No |
Yes |
| Front valance | No | No |
Yes |
| Multiple working sockets/ pipes | No | No |
Yes |
| Sprung buffers | No | No |
Yes |
| Bufferbeam detail (in detailing pack) | |||
| Pipework (for front) | No | No |
Yes |
| Pipework (for rear) | No | No |
Yes |
| Mechanical | |||
| Body Construction |
Plastic with metal parts |
Plastic with metal parts |
Plastic with metal parts |
| Working cosmetic features | |||
| Pantograph (collects DC current from catenary) |
Yes |
No | No |
| Pantograph (Unpowered but poseable) |
Yes |
Yes |
Yes |
| Retractable buffers | No | No |
Yes |
| Chassis construction |
Lightweight |
Lightweight |
Diecast |
| Loco-driven wheels (number of) |
4 wheels |
4 wheels |
8 wheels |
| Minimum radius |
Radius 2 |
Radius 2 |
Radius 2 |
| Coupling socket/mounting | |||
| Fixed |
Yes |
Yes |
No |
| NEM pockets | No | No |
Yes |
| Coupling type |
Tension lock |
Tension lock |
Tension lock |
| Weighting (to assist adhesion) | |||
| Within chassis |
Yes |
Yes |
Yes |
| Separating the body from the chassis |
Body clips off from chassis |
Body clips off from chassis |
Secured with one or more screws |
| Electrical | |||
| Motor type |
Ringfield |
5-pole (standard) |
5-pole with flywheel |
| Motor location |
1 bogie mounted |
1 bogie mounted |
Centre of chassis |
| Power collection |
2 rail DC |
2 rail DC |
2 rail DC |
| Working lights | |||
| Cab light | No | No |
Yes |
| Directional headlights & tail lights | No | No |
Yes |
| Headlights (independent) | No | No |
Yes |
| Tail lights (independent) | No | No |
Yes |
| Pickups |
Power bogie only |
Power bogie only |
All wheels |
| DCC speaker |
No provision for speaker |
No provision for speaker |
Provision for 20x40mm rectangular speaker |
| Items in Stock | View | View | View |