Heljan OO 3962 LNER Flush Tender 21Pin is a detailed OO gauge steam locomotive model designed for realistic railway modelling and authentic scale operation on 16.5 mm track.

Featuring:

• Detail & Finish: Finely moulded bodywork finished in pristine LNER black livery with accurate printed running number #3962 and flush tender detailing.
• Drive & Performance: Smooth operation designed for OO layouts; detailed chassis and locomotive pickup deliver consistent traction (specific motor details not listed).
• Control & Compatibility: DCC‑ready with a 21‑pin decoder socket for digital operation once a decoder is installed; analogue DC operation also possible.
• Couplings & Integration: Fitted with NEM pocket mountings and tension‑lock couplings for seamless connection with modern OO rolling stock.

Model Dimensions (Approximate):

• Length: Approximate OO steam locomotive length (specific mm not listed).
• Scale: OO (1:76 scale)
• Gauge: 16.5 mm (OO gauge).

Technical Specifications:

• Brand: Heljan
• Model Type: Steam Locomotive with flush tender
• Era / Prototype: London & North Eastern Railway O2/4 class; used for heavy mineral and goods duties in the 1923‑1947 period.
• Control System: DCC‑ready (requires decoder installation)
• Decoder Interface: 21‑pin socket
• Minimum Curve Radius: Second radius (circa 438 mm)
• Lighting: Lighting information not confirmed and therefore omitted
• Coupler Type: NEM pocket with tension‑lock couplings
• Material: Detailed plastic body and chassis components (exact materials not specified)
• Power Source: Track‑powered
• Assembly: Ready‑to‑run
• Included: Locomotive model only (tender is integral to the model)

Ideal for modellers building detailed OO gauge layouts and collectors of classic LNER steam locomotives seeking accurate scale appearance, flexible DCC control options, and smooth integration with existing rolling stock.

Why this model matters

This Heljan OO gauge model represents the London & North Eastern Railway’s O2/4 “Tango” 2‑8‑0 steam locomotive #3962 with a flush‑sided tender in pristine black livery — a popular choice for heavy mineral and goods operations during the Big Four era (1923‑1947). Its detailed finish, NEM coupling integration, and 21‑pin DCC‑ready provision make it a versatile addition for both traditional DC and modern digital control layouts.

How to use it

Place the ready‑to‑run locomotive on clean OO gauge track connected to a suitable power supply. For analogue DC operation, use a compatible controller to adjust speed and direction. For digital control, install a compatible 21‑pin DCC decoder before connecting to a DCC system. Keep wheels and track clean for optimal electrical pickup and check couplings before operation. Store the model in a safe, dust‑free environment when not in use to protect the detailed finish and mechanical components.

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