Bachmann 32-135

Tooling

In 2003, Bachmann Branchline introduced its OO gauge model of the Great Western Railway (GWR) 4500 Class “Small Prairie” tank locomotive. This release marked a significant step forward in British outline modelling, replacing older, less detailed representations with a highly accurate and finely engineered model. The prototype, designed by Churchward, was a 2-6-2T locomotive built between 1906 and 1924 for mixed-traffic duties on branch lines.

Tooling Features

• Scale: OO (1:76)
• Construction: Die-cast chassis for weight and stability, plastic body shell with crisp moulding and rivet detail.
• Detailing: Separate handrails, accurate cab interior, fine pipework, and prototypical chimney and dome profiles.
• Couplings: Standard tension-lock couplers in NEM pockets.

Mechanical & Electrical

• Motor & Drive: Smooth-running can motor with worm drive to the centre axle.
• Weighting: Metal chassis provides good adhesion and realistic performance.
• Minimum Radius: Compatible with 1st radius curves (approx. 371 mm).
• Lighting: No factory lighting fitted.

DCC Capability

The initial 2003 tooling was DCC compatible but not ready. It featured a hard-wired motor without a factory-fitted socket. Later revisions (2012 onwards) introduced an 8-pin socket for easier digital conversion.

Liveries Produced

The first batch included GWR green, BR black, and BR lined green variants. These were followed by additional liveries and weathered versions in subsequent years.

Reviews & Commentary

Upon release, the model was praised for its accuracy, smooth running, and fine detailing, setting a new benchmark for branch line tank engines in OO scale. Model railway magazines highlighted its robust mechanism and realistic proportions. On forums and social media, enthusiasts noted the improvement over previous models, though some commented on the lack of DCC socket and lighting options in the original tooling.

Interesting Notes

• The tooling formed the basis for later variants, including the 4575 and 55xx classes.
• Its introduction coincided with Bachmann’s broader push for higher fidelity in British outline models during the early 2000s.

Class & Prototype

No prototype found.

Operator & Livery

The Great Western Railway (1835-1947) was Britain's most innovative railway company, engineered by Isambard Kingdom Brunel with his revolutionary 7ft ¼in broad gauge system. Known affectionately as "God's Wonderful Railway" and the "Holiday Line," the GWR connected London Paddington with the West Country, Wales, and Birmingham through 3,800 miles of superbly engineered routes.

Renowned for its Brunswick green locomotives, chocolate and cream carriages, and engineering excellence centred at Swindon Works, the GWR pioneered advanced steam technology under chief mechanical engineers Daniel Gooch, George Jackson Churchward, and Charles Collett. The company's legendary locomotive classes—including Castle, King, Hall, and Manor—established performance standards that influenced British locomotive design for decades.

The only "Big Four" railway to retain its original identity through the 1921 grouping, the GWR maintained its distinctive corporate culture until nationalisation in 1947. Today, the company's engineering legacy lives on through extensive preservation efforts, heritage railways, and detailed model railway recreations that celebrate the finest traditions of British steam railway operation.