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Comparison of OO Class 31 models

Hornby OO Class 31 Airfix GMR (Great Model Railways) OO Class 31 Lima OO Class 31 Hornby OO Class 31 Lima OO Class 31 Accurascale OO Class 31 Hornby OO Class 31
Manufacturer Hornby Airfix GMR (Great Model Railways) Lima Hornby Lima Accurascale Hornby
Year model introduced 1962 1977 1989 2005 2012 2023 2023
DCC Capability DCC compatible but no socket. Complete rewire required - OO DCC compatible but no socket. Pancake motor DCC compatible but no socket. Pancake motor DCC Ready. 8-pin socket DCC Ready. 8-pin socket DCC Ready. 21-pin socket DCC Ready. 21-pin socket
Bodyshell
Bodyshells represented (of Prototypes)
Class 31 - As built 'Brush Type 2' configuration No No No No No Yes
No
Class 31 - Bufferbeam - Original No No No No No Yes
No
Class 31 - Bufferbeam - Refurbished (Cutaway) No No No No No Yes
No
Class 31 - Cab roof with headcode boxes No No No Yes
Yes
Yes
Yes
Class 31 - Cab roof without headcode boxes No No No Yes
Yes
Yes
Yes
Class 31/0 No No No No No Yes
No
Class 31/1 - original No No No No No Yes
No
Class 31/1 - refurbished No No No No No Yes
No
Class 31/4 - refurbished No No No No No Yes
No
Detailing
Bodyshell - factory-fitted separate details
Boiler plates No No No No No Yes
No
Company branding No No No No No Yes
No
Door handles No No No Yes
No No Yes
Door steps No No No No No Yes
No
Exhausts No No No No No Yes
No
Fan Grill (etched) No No No Yes
No Yes
Yes
Fan(s) No No No No No Yes
No
Handrails No No No Yes
Yes
Yes
Yes
Headcode discs No No No No No Yes
No
High intensity headlight No No No No No Yes
No
Horn(s) No No No No No Yes
No
Jumper cables No No No Yes
No No Yes
Lamp irons No No No Yes
No Yes
Yes
Nameplates - etched - pre-fitted No No No No No Yes
No
Nameplates - etched - require fitting No No No Yes
No No Yes
NRN (National Radio Network) Pod No No No No No Yes
No
Roof railing No No No Yes
No Yes
Yes
Side grilles (etched) No No No Yes
No Yes
Yes
Chassis/underframe detail
Air tank No No No No No Yes
No
Battery box No No Yes
Yes
Yes
Yes
Yes
Footsteps No No No Yes
Yes
Yes
Yes
Fuel tank Yes
No Yes
Yes
Yes
Yes
Yes
Pipework No No No No No Yes
No
Sand boxes No No No No No Yes
No
Sanding gear No No Yes
Yes
No Yes
Yes
Cab, footplate & interior detail
Crew communication doors No No No No No Yes
No
Crew communication doors (plated over) No No No No No Yes
No
Detailed No No No No Yes
No No
Detailed & painted No No No Yes
No Yes
Yes
Glazing Yes
No Yes
Yes
Yes
Yes
Yes
Seating No No No Yes
No Yes
Yes
Window wipers No No No Yes
Yes
Yes
Yes
Wheel "aesthetics"
Chemically-blackened Yes
No Yes
Yes
Yes
Yes
Yes
Nickel-plated No No Yes
No No No No
Bufferbeam detail (pre-fitted)
Cosmetic screw link coupling No No No Yes
No Yes
Yes
Electric train heating box/ pipes No No No No No Yes
No
Lifeguard No No No Yes
No Yes
Yes
Multiple working sockets/ pipes No No No No No Yes
No
Pipework - pre-fitted to front No No No No No Yes
No
Pipework - pre-fitted to rear No No No No No Yes
No
Sprung buffers No No No Yes
No Yes
Yes
Bufferbeam detail (in detailing pack)
Pipework (for front) No No No Yes
No No Yes
Pipework (for rear) No No No Yes
No No Yes
Snow plough No No No No No Yes
No
Mechanical
Body Construction No No No No No Plastic with metal parts
No
Working cosmetic features
Opening cab doors No No No Yes
No No Yes
Rotating fan(s) No No No Yes
No Yes
Yes
Chassis construction Plastic & metal
No Lightweight
Diecast
Lightweight
Heavy diecast
Diecast
Loco-driven wheels (number of) 4 wheels
No 4 wheels
No No 8 wheels
No
Minimum radius Radius 1
No Radius 2
Radius 2
Radius 2
Radius 2
Radius 2
Coupling socket/mounting
Fixed Yes
No Yes
No No No No
NEM pockets No No No Yes
Yes
Yes
Yes
Coupling type Tension lock
No Tension lock
Tension lock
Tension lock
Tension lock
Tension lock
Weighting (to assist adhesion)
Within chassis No No Yes
Yes
Yes
Yes
Yes
Separating the body from the chassis Secured with one or more screws
No No Body clips off from chassis
No Secured with one or more screws
Secured with one or more screws
Electrical
Motor type 3-pole
No Pancake
5-pole with flywheel
5-pole (standard)
5-pole with two flywheels
5-pole with flywheel
Motor location 1 bogie mounted
No 1 bogie mounted
Centre of chassis
1 bogie mounted
Centre of chassis
Centre of chassis
Power collection 2 rail DC
No 2 rail DC
2 rail DC
2 rail DC
2 rail DC
2 rail DC
Working lights
Cab light No No No No No Yes
No
Directional headlights & tail lights No No No Yes
No Yes
Yes
Headlights (independent) No No No No No Yes
No
Instrument panel lighting No No No No No Yes
No
Tail lights (independent) No No No No No Yes
No
Pickups Power bogie only
No Unpowered bogie only
All wheels
Driving wheels only
All wheels
All wheels
DCC speaker No provision for speaker
No No provision for speaker
Provision for 28mm round speaker
Provision for 28mm round speaker
Provision for dual large speakers
Provision for 28mm round speaker
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