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Comparison of O Class 55 'Deltic' models
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| Manufacturer | Heljan | Heljan |
| Year model introduced | 2011 | 2023 |
| DCC Capability | DCC compatible but no socket | DCC Ready. ESU XL decoder socket |
| Detailing | ||
| Bodyshell - factory-fitted separate details | ||
| Bodyside Steps |
Yes |
Yes |
| Door handles | No |
Yes |
| Exhausts |
Yes |
Yes |
| Fan Grill (etched) |
Yes |
Yes |
| Fan(s) |
Yes |
Yes |
| Handrails |
Yes |
Yes |
| High intensity headlight | No |
Yes |
| Horn(s) |
Yes |
Yes |
| Lamp irons |
Yes |
Yes |
| Nameplates - etched - require fitting | No |
Yes |
| Roof grilles (etched) | No |
Yes |
| Side grilles (etched) |
Yes |
Yes |
| Chassis/underframe detail | ||
| Battery box |
Yes |
Yes |
| Chains | No |
Yes |
| Footsteps |
Yes |
Yes |
| Fuel tank |
Yes |
Yes |
| Pipework |
Yes |
Yes |
| Sanding gear | No |
Yes |
| Cab, footplate & interior detail | ||
| Detailed & painted |
Yes |
Yes |
| Engine bay | No |
Yes |
| Glazing |
Yes |
Yes |
| Seating |
Yes |
Yes |
| Window wipers |
Yes |
Yes |
| Wheel "aesthetics" | ||
| Chemically-blackened |
Yes |
Yes |
| Metal-pin point bearings | No |
Yes |
| Painted | No |
Yes |
| Bufferbeam detail (pre-fitted) | ||
| Cosmetic screw link coupling | No |
Yes |
| Lifeguard | No |
Yes |
| Multiple working sockets/ pipes | No |
Yes |
| Pipework - pre-fitted to front | No |
Yes |
| Pipework - pre-fitted to rear | No |
Yes |
| Sprung buffers |
Yes |
Yes |
| Bufferbeam detail (in detailing pack) | ||
| Pipework (for front) |
Yes |
No |
| Pipework (for rear) |
Yes |
No |
| Mechanical | ||
| Body Construction |
Plastic with metal parts |
Plastic with metal parts |
| Working cosmetic features | ||
| Provision for dual smoke units | No |
Yes |
| Rotating fan(s) |
Yes |
Yes |
| Chassis construction |
Diecast |
Heavy diecast |
| Loco-driven wheels (number of) |
12 wheels |
12 wheels |
| Minimum radius |
3ft |
3ft |
| Coupling socket/mounting | ||
| Screw Link Couplings |
Yes |
Yes |
| Coupling type |
3-link coupling |
3-link coupling |
| Weighting (to assist adhesion) | ||
| Within body | No |
Yes |
| Within chassis |
Yes |
Yes |
| Separating the body from the chassis |
Secured with one or more screws |
Secured with one or more screws |
| Electrical | ||
| Motor type |
2 x 5-pole with flywheel |
2 x 5-pole with flywheel |
| Motor location |
1 mounted on each bogie |
1 mounted on each bogie |
| Power collection |
2 rail DC |
2 rail DC |
| Working lights | ||
| Cab light | No |
Yes |
| Directional headlights & tail lights |
Yes |
Yes |
| Headlights (independent) | No |
Yes |
| Illuminated headcodes |
Yes |
Yes |
| Tail lights (independent) | No |
Yes |
| Pickups |
All wheels |
All wheels |
| DCC speaker |
Provision for a speaker (dimensions unknown) |
Provision for dual large speakers |
| Items in Stock | View | View |