Heljan OO BR Brown/Yellow Track Recording Car DB999507 (21‑Pin) is a detailed OO gauge model railway railbus designed for realistic railway modelling and authentic scale operation on standard 16.5 mm track.

Featuring:

• Detail & Finish: Highly detailed bodywork finished in British Rail brown and yellow livery with accurately applied printed markings for the Track Recording Lab vehicle DB999507, including cab details and glazing typical of the prototype.
• Drive & Performance: All wheels driven with a 5‑pole motor and flywheel for smooth running on OO gauge layouts.
• Control & Compatibility: DCC‑ready with a 21‑pin decoder socket for digital operation; compatible with analogue DC once a decoder is installed.
• Couplings & Integration: Fitted with NEM pocket mountings for standard OO tension‑lock couplings allowing seamless integration with other rolling stock.

Model Dimensions (Approximate):

• Length: Approx. 170 mm
• Scale: OO (1:76)
• Gauge: 16.5 mm

Technical Specifications:

• Brand: Heljan
• Model Type: Railbus / Track Recording Vehicle
• Era / Prototype: British Rail Research Track Recording Lab vehicle in service from the late 1950s into the 1960s.
• Control System: DCC‑ready (decoder required for digital operation)
• Decoder Interface: 21‑pin socket
• Minimum Curve Radius: Suitable for Radius 1 (tight curves typical of OO layouts)
• Lighting: Working interior and directional lighting fitted
• Coupler Type: Tension‑lock via NEM pockets
• Material: Heavy diecast chassis with detailed plastic body components
• Power Source: Track‑powered
• Assembly: Ready‑to‑run
• Included: Railbus model only

Ideal for modellers building detailed OO gauge layouts and collectors of unusual or specialised British prototype vehicles seeking a standout piece with flexible control options and authentic scale appearance.

Why this model matters

The Heljan BR Brown/Yellow Track Recording Car DB999507 represents a distinctive British Rail Research vehicle used to assess track condition and performance, finished in striking brown and yellow livery. Its authentic detailing, DCC‑ready 21‑pin interface, all‑wheel drive and working lights make it a compelling choice for enthusiasts of British rural operations and specialised rolling stock on OO gauge layouts.

How to use it

Place the ready‑to‑run railbus on clean OO gauge track connected to a suitable DC power supply for analogue operation. For digital control, install a compatible 21‑pin DCC decoder in the provided socket before connecting to a DCC system. Keep wheels and track clean for optimal electrical pickup, check couplings before running, and store the model safely when not in use to preserve its detailed finish and mechanical components.