R30551SS Hornby A4 Class Mallard 4-6-2 Steam Generator

One of the most famous of all steam locomotives, ‘Mallard’ still holds the world speed record for steam. In July 1938, it reached 126mph on Stoke Bank.

Entering service in March of that year in LNER Garter blue, it had full side valances and red wheels, as depicted by our highly detailed model. It was renumbered 22 in 1946, by which time it carried wartime plain black. When it was withdrawn from King’s Cross in April 1963, it was in lined BR green and numbered 60022. 

The locomotive is preserved in its original livery at the National Railway Museum in York. 'Mallard' has always been one of our most popular models. In 2026 we have given the A4 a tooling update and the model now includes the new Hornby steam generator technology, working headlights and tender lights.

Specific to R30551SS

• Running number 4468
• Lined Garter Blue livery
• Non-corridor tender
• Double chimney arrangement
• Valanced streamline body made from die-cast metal
• LHD cab arrangement
• Working headlights
• Working tender lighs

Common Saint Class features

• High detail OO gauge model based on extensive research and original works drawings
• Die-cast chassis and boiler
• High detail cab and fully decorated backhead with decorated instrument dials
• Pre-fitted 21-pin HM7000 decoder and speaker. The decoder compatible with NMRA DCC controllers, HM7000 APP control and has the Merchant Navy sound profile pre-installed for accurate locomotive sounds, synchronised with the chuff rate.
• Pre-fitted steam generator system featuring an optical sensor for accurate chuff rate synchronised with the wheel speed. Steam output is created using piezo element technology. This is a cold water-based system (no heating element).
• Adjustable steam output settings via the decoder.
• HM7000 Power Bank compatible
• Powerful 5 pole skew wound motor
• Illuminated flickering firebox
• Quick release locomotive to tender connector
• Pogo pin wheel pickup arrangement for easy pickup servicing
• Electrical pickups on main drive wheels and tender wheels
• Fully decorated crew figures
• Turned brass safety valve
• Prototypical size metal handrails with brass stanchions
• Brass main drive bearings
• Sprung metal buffers
• Front and rear NEM coupling pocket
• Separately fitted simulated coal load.