Comparison of OO Class 31 models


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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Comparison of OO Class 31 models

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