Comparison of O Class 24 models
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| Manufacturer | Bachmann Brassworks | Heljan |
| Year model introduced | 2009 | 2025 |
| DCC Capability | DCC compatible but no socket | DCC Ready. ESU XL decoder socket |
| Detailing | ||
| Bodyshell - factory-fitted separate details | ||
| Boiler steps (Open or plated) | No |
Yes |
| Exhausts | No |
Yes |
| Fan Grill (etched) | No |
Yes |
| Fan(s) | No |
Yes |
| Handrails | No |
Yes |
| Representation of internal equipment (behind grilles) | No |
Yes |
| Roof covers | No |
Yes |
| Side grilles (etched) | No |
Yes |
| Tablet catcher equipment | No |
Yes |
| Tablet catcher recess | No |
Yes |
| Chassis/underframe detail | ||
| Air tank | No |
Yes |
| Battery box | No |
Yes |
| Footsteps | No |
Yes |
| Fuel tank | No |
Yes |
| Pipework | No |
Yes |
| Sanding gear | No |
Yes |
| Speedometer cable | No |
Yes |
| Bodyshell - separately-fitted details - in detailing pack (where applicable) | ||
| Headcode discs | No |
Yes |
| Cab, footplate & interior detail | ||
| Detailed & painted | No |
Yes |
| Glazing | No |
Yes |
| Seating | No |
Yes |
| Window wipers | No |
Yes |
| Wheel "aesthetics" | ||
| Chemically-blackened | No |
Yes |
| Metal-pin point bearings | No |
Yes |
| Painted | No |
Yes |
| Bufferbeam detail (pre-fitted) | ||
| Cosmetic screw link coupling | No |
Yes |
| Pipework - pre-fitted to front | No |
Yes |
| Pipework - pre-fitted to rear | No |
Yes |
| Sprung buffers | No |
Yes |
| Mechanical | ||
| Body Construction | No |
Plastic with metal parts |
| Working cosmetic features | ||
| Rotating fan(s) | No |
Yes |
| Chassis construction | No |
Heavy diecast |
| Loco-driven wheels (number of) | No |
8 wheels |
| Minimum radius | No |
Radius 2 |
| Coupling socket/mounting | ||
| Screw Link Couplings | No |
Yes |
| Coupling type | No |
3-link coupling |
| Weighting (to assist adhesion) | ||
| Within chassis | No |
Yes |
| Separating the body from the chassis | No |
Secured with one or more screws |
| Electrical | ||
| Motor type | No |
2 x 5-pole with flywheel |
| Motor location | No |
1 mounted on each bogie |
| Power collection | No |
2 rail DC |
| Working lights | ||
| Cab light | No |
Yes |
| Directional headlights & tail lights | No |
Yes |
| Headlights (independent) | No |
Yes |
| Tail lights (independent) | No |
Yes |
| Pickups | No |
All wheels |
| DCC speaker | No |
Provision for a speaker (dimensions unknown) |
| Items in Stock | View | View |
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