Accurascale ACC3181

Class 31 - 31418 BR Blue

Manufacturer catalogue image - please note that pre-release images may be CAD renders or CGI images rather than photographs

Prototype Era
Era 7 (1972 to 1982) British Rail Blue (TOPS)

Manufacturer description

31418 BR Blue
Between 1971 and 1975, 24 Class 31s were upgraded with electric train heating capability (ETH) courtesy of a 320kW Brush BL100-30 alternator, the same as fitted to the similarly modified Class 45/1 ‘Peaks’ and Class 47/4s. Powered directly from the engine, this provided an impressive ETH index rating of 66, perfect for their expected duties shuttling empty coaching stock (ECS) in and out of King’s Cross, Paddington and St. Pancras as well as portions of ‘air-con’ trains around the Leeds/Doncaster area. An oddity within the new sub class was 31418, the former D5522 of 30A, which was from the lower geared 80mph batch delivered in 1959 and also the only disc headcode or ‘skinhead’ machine to be converted until a second series of Class 31/4s was undertaken in the mid 1980s. In 1978, having swapped North London for Gateshead via a spell at Finsbury Park, it saw its connecting doors plated over, which resulted in the loss of its centre pair of discs. It retained this basic appearance for the next nine years before being ‘refurbished’ at Doncaster in October 1987, which saw it lose its steam generator, bufferbeam cowls and bodyside banding. The ETH receptacle was also resited to the driver’s side corner of the cab front. Within days of release it was unofficially named Boadicea and received white painted ‘discs’ the following year, both customisations surviving to its withdrawal from Springs Branch with engine failure in October 1995. With minor celebrity status it was quickly purchased for preservation at the Great Central Railway, before joining A1A Locomotive Ltd’s fleet in 2002. Over the last two decades it has been slowly restored to 1970-80s condition at the group’s base at Swanwick Junction and is expected to be completed within the next few years.

Catalogue listing

Brand
Accurascale
Product Code
ACC3181
GTIN
0781005473029
RRP
£221.95
Release date
January 2026

Model details

DCC status
Motorised Working Fan
Livery
BR Blue
Tooling date
2023
Finish
Pristine
Minimum radius
Radius 2
Coupling mount
NEM pockets
Coupling type
Tension lock
Chassis construction
Heavy diecast
Scale
OO Gauge (1:76 Scale)
Running number
31418
Features
Directional lighting
Interior lighting

Prototype information

Operated by
British Rail
EWS
Fragonset Railways
FM Rail
Mainline Rail
Nemesis Rail
Network Rail
Total built
263
Tractive effort
35,900 lbf
Wheel configuration
A1A-A1A
Main duties
Mixed Traffic
In service until
2017
Locomotive type
Diesel-Electric
Builder
Brush Traction
Build dates
1957 to 1962
Locomotive class*
Class 31
Motive power
Diesel
Built
1957-1962
Total produced
263

* Class names often change over the lifespan of a locomotive, so this is not necessarily the class name used by the operator in the period modelled.

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Related products

Accurascale's OO gauge model of Class 31 locomotive 31418 in BR Blue livery is a highly detailed representation of the prototype. The model features a motorised working fan, which operates on both DC and DCC control, and is fully programmed to simulate accurate motion on DCC.

The Class 31/4 sub-class, of which 31418 is a member, was upgraded with electric train heating capability between 1971 and 1975. This modification allowed the locomotives to power coaches and provide heating for passengers. 31418, one of the disc headcode machines, was converted in 1978 and retained its unique appearance until it was refurbished in 1987.

The model features a heavy die-cast metal chassis, one truck bogie design, and RP25-110 profile wheels. It also includes etched metal and plastic detail parts, such as grab handles, steps, and wipers. The locomotive is DCC ready, with a factory-installed DCC sound option available featuring a large speaker and sugarcube style speaker with large sound capsules. The model also includes a PowerPack supercapacitor Stay-Alive system, which provides uninterrupted power and flicker-free lighting.

Key features of the model include a high-quality 5-pole motor with two large flywheels, a helical gearbox for maximum performance, and a gearing arrangement that allows the locomotive to achieve a scale top speed of 90mph. The model also features fully detailed lighting, including directional lighting, lighting clusters, and switchable red and white marker lights.

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