Comparison of HO Class 66 models
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| Manufacturer | Mehano | ESU | Heljan |
| Year model introduced | 2005 | 2014 | 2016 |
| DCC Capability | DCC suitability unknown | DCC Ready. 21-pin socket | DCC Ready. 21-pin socket |
| Bodyshell | |||
| Bodyshells represented (of Prototypes) | |||
| Class 66 - Standard, as introduced | No |
Yes |
Yes |
| Detailing | |||
| Bodyshell - factory-fitted separate details | |||
| Air Conditioning Unit | No |
Yes |
No |
| Exhausts | No |
Yes |
Yes |
| Fan Grill (etched) | No |
Yes |
Yes |
| Handrails | No |
Yes |
Yes |
| Horn(s) | No |
Yes |
Yes |
| Jumper cables | 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 |
| Speedometer cable | No | No |
Yes |
| Cab, footplate & interior detail | |||
| Detailed | No |
Yes |
No |
| Detailed & painted | No | No |
Yes |
| Glazing | No |
Yes |
Yes |
| Seating | No |
Yes |
Yes |
| Window wipers | No |
Yes |
Yes |
| Wheel "aesthetics" | |||
| Chemically-blackened | No |
Yes |
Yes |
| Traction tyres | No |
Yes |
No |
| Bufferbeam detail (pre-fitted) | |||
| Cosmetic coupling - hook only | No | No |
Yes |
| Cosmetic screw link coupling | No |
Yes |
No |
| Front valance | No |
Yes |
Yes |
| Lifeguard | No |
Yes |
Yes |
| Pipework - pre-fitted to front | No |
Yes |
Yes |
| Pipework - pre-fitted to rear | No |
Yes |
Yes |
| Sprung buffers | No |
Yes |
Yes |
| Mechanical | |||
| Chassis construction | No |
Heavy diecast |
Diecast |
| Minimum radius | No |
Radius 2 |
Radius 2 |
| Coupling socket/mounting | |||
| NEM pockets | No |
Yes |
Yes |
| Coupling type | No |
Tension lock |
Tension lock |
| Weighting (to assist adhesion) | |||
| Within chassis | No |
Yes |
Yes |
| Separating the body from the chassis | No |
Secured with one or more screws |
Secured with one or more screws |
| Electrical | |||
| Motor type | No |
5-pole with flywheel |
5-pole with two flywheels |
| Motor location | No |
Centre of chassis |
Centre of chassis |
| Power collection | No |
2 or 3 rail DC |
2 rail DC |
| Working lights | |||
| Cab light | No |
Yes |
No |
| 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 |