Model railway retail serves dedicated hobbyists, collectors, and layout builders. The market is dominated by brand loyalty — Hornby, Bachmann, Heljan, Dapol, Farish, and Peco are key names. Customers are highly knowledgeable and specify by scale, era, and DCC compatibility. Migrating to Shopify suits model railway retail, but the product data structure requires accurate scale, gauge, and compatibility metafields to support the filtering behaviour of serious modellers.

Product categories

Locomotives: Steam, diesel, electric. By scale, manufacturer, era, and prototype.
Rolling stock: Wagons, coaches, multiple units. Livery and era.
Track: Straight, curved, points (switches), crossings. By scale and radius.
Buildings and scenery: Kits and ready-built. By scale.
Controllers and DCC decoders: Analogue and DCC controllers, decoder chips, sound decoders.
Layout accessories: Signals, level crossings, platform accessories, figures.
Modelling materials: Ballast, scatter, static grass, paint, glue.
Sets and starter packs: Train sets for beginners; add-on packs.

Scale and gauge specifications

Scale is the primary filter criterion for model railway purchases — all products must have scale clearly noted:

OO scale (1:76.2): most popular scale in the UK — Hornby, Bachmann, Dapol, Heljan, Peco
N scale (1:148 in UK, 1:160 in continental): smaller scale for large layouts — Graham Farish, Farish, Minitrix
HO scale (1:87): Continental European and American standard — different from British OO despite similar track gauge
O scale (1:43.5 UK / 1:45 continental): large scale for garden or large indoor layouts
G scale (1:22.5 to 1:29): garden railways
Track gauge: OO and HO share 16.5mm track gauge (confusingly) — note both scale and gauge separately

product.metafields.model_railway.scale = "OO / N / HO / O / G"
product.metafields.model_railway.gauge_mm = "16.5"             // track gauge in mm
product.metafields.model_railway.scale_ratio = "1:76.2"
product.metafields.model_railway.manufacturer = "Hornby / Bachmann / Farish / Dapol"
product.metafields.model_railway.era = "Era 1 / Era 2 / Era 3 / Era 4 / Era 5 / Era 6 / Era 7 / Era 8 / Era 9 / Era 10 / Era 11"
product.metafields.model_railway.livery = "BR Blue / GWR Green / LMS Crimson"
product.metafields.model_railway.prototype = "Class 37 / Flying Scotsman"

Era categorisation

The British railway modelling era system covers the history of UK railways:

Era 1 (1804–1874): Pre-grouping early railways
Eras 2–3 (1875–1947): Pre-grouping and grouping period (GWR, LMS, LNER, SR)
Era 4–5 (1948–1968): British Railways nationalisation, steam to diesel transition
Era 6–7 (1969–1994): BR blue, sectorisation
Era 8–9 (1995–2008): Privatisation, first generation operators
Era 10–11 (2009–present): Modern traction and liveries
Note era on all locomotives and rolling stock — essential for layout accuracy-conscious modellers

DCC decoder compatibility

Digital Command Control (DCC) is the standard digital control system for model railways:

DCC ready: locomotive has socket for decoder installation but no decoder fitted
DCC fitted: decoder already installed; note decoder brand and default address
DCC sound: sound decoder fitted with prototype sound effects
Next18 / 21-pin / 8-pin NEM 652: decoder socket standards — note socket type for DCC ready locos
Decoder compatibility: for decoder products, note compatible socket types and recommended locomotive brands

product.metafields.model_railway.dcc_status = "DCC ready / DCC fitted / DCC sound / Analogue only"
product.metafields.model_railway.decoder_socket = "Next18 / 21-pin / 8-pin NEM 652"
product.metafields.model_railway.decoder_brand = "Hornby / ESU / Zimo / TCS"
product.metafields.model_railway.minimum_radius_mm = "438"     // minimum curve radius for operation

Limited edition and collector management

Many model railway products are limited edition releases:

Limited run number: state production run quantity if known — collector value information
Pre-order: major releases are available for pre-order 6–12 months ahead — configure Shopify pre-order with expected despatch date
Sold-out preservation: sold-out models should be archived (not deleted) — maintains SEO and collector reference value
Renumbered/reliveried variants: Hornby and Bachmann release the same body in multiple liveries — manage as variants of parent product with livery as the differentiating option

Age restriction

Model railway products typically carry a minimum age recommendation:

Most model railway sets: Not suitable for children under 14 — small parts, fragile components, electrical operation
Note age recommendation clearly on all locomotive, rolling stock, and accessory products
Toy train sets designed for children (Hornby Thomas, etc.) are separately categorised and may have different age ratings

Post-migration checklist for model railway stores

Scale: OO/N/HO/O noted on all products; scale ratio and track gauge stated
Era: era period noted on all rolling stock and locomotives
DCC status: DCC ready/fitted/sound noted; decoder socket type for DCC-ready items
Manufacturer and prototype: manufacturer and prototype model noted as metafields for filtering
Limited editions: production run quantity noted; pre-orders configured with despatch date
Age restriction: 14+ age recommendation on all model railway products

Migrating a model railways store from WooCommerce to Shopify (2026)