Comparison of O Class 25 models
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| Manufacturer | Bachmann Brassworks | Heljan | Heljan |
| Year model introduced | 1999 | 2016 | 2019 |
| DCC Capability | DCC incompatible | DCC compatible but no socket | DCC Ready. Screw terminals for wired decoder |
| Bodyshell | |||
| Bodyshells represented (of Prototypes) | |||
| Class 25/0 - original/old style - vents on sides | No |
Yes |
No |
| Class 25/3 - vents on roof "New style" | No | No |
Yes |
| Detailing | |||
| Bodyshell - factory-fitted separate details | |||
| Door handles | No |
Yes |
Yes |
| Fan Grill (etched) | No | No |
Yes |
| Handrails | No |
Yes |
Yes |
| Lamp irons | No |
Yes |
Yes |
| Side grilles (etched) | No |
Yes |
Yes |
| Chassis/underframe detail | |||
| Battery box | No |
Yes |
Yes |
| Footsteps | No |
Yes |
Yes |
| Fuel tank | No |
Yes |
Yes |
| Sanding gear | No |
Yes |
Yes |
| Cab, footplate & interior detail | |||
| Detailed & painted | No |
Yes |
Yes |
| Glazing | No |
Yes |
Yes |
| Seating | No |
Yes |
Yes |
| Window wipers | No |
Yes |
Yes |
| Wheel "aesthetics" | |||
| Chemically-blackened | No |
Yes |
Yes |
| Bufferbeam detail (pre-fitted) | |||
| Cosmetic screw link coupling | No |
Yes |
Yes |
| Lifeguard | No |
Yes |
No |
| Pipework - pre-fitted to front | No |
Yes |
Yes |
| Pipework - pre-fitted to rear | No |
Yes |
Yes |
| Sprung buffers | No |
Yes |
Yes |
| Mechanical | |||
| Working cosmetic features | |||
| Rotating fan(s) | No |
Yes |
Yes |
| Chassis construction | No |
Diecast |
Diecast |
| Loco-driven wheels (number of) | No | No |
8 wheels |
| Minimum radius | No |
3ft |
3ft |
| Coupling socket/mounting | |||
| Screw Link Couplings | No |
Yes |
Yes |
| Coupling type | No |
3-link coupling |
3-link coupling |
| Weighting (to assist adhesion) | |||
| Within chassis | No |
Yes |
Yes |
| Separating the body from the chassis | No |
Body clips off from chassis |
Body clips off from chassis |
| Electrical | |||
| Motor type | No |
2 x 5-pole with flywheel |
2 x 5-pole with flywheel |
| Motor location | No |
Centre of chassis |
Centre of chassis |
| Power collection | No |
2 rail DC |
2 rail DC |
| Working lights | |||
| Cab light | No |
Yes |
Yes |
| Directional headlights & tail lights | No |
Yes |
Yes |
| Pickups | No |
All wheels |
All wheels |
| DCC speaker | No |
Provision for a speaker (dimensions unknown) |
Provision for a speaker (dimensions unknown) |
| Items in Stock | View | View | View |