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Prototype Era
Era 3 (1923 to 1947) The Big Four (LNER, LMS, GWR and SR)
The prototype coaches were constructed between 1914 and 1920 made of steel body sides with an absence of panelling but with bolection mouldings around the windows and frosted glass top light windows, sitting on Churchward 9’-0” bogies. They were designed to operate as a set comprising Left hand and right-hand Brake Thirds, 1 or 2-Thirds and left hand and right-hand Composites enabling all corridor windows to be displayed on the same side, commonly used for cross country and main line working between cities.
Chassis
Body
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Dapol GWR Corridor Toplight 1935 Chocolate & Cream Roundel Brake Third RH 3805 is a 00‑gauge model of a Great Western Railway corridor brake third carriage. The model is supplied under the manufacturer part number 4P‑021‑305 and represents a coach from the Big Four era, when the GWR operated alongside the LNER, LMS and SR.
The prototype coaches were built between 1914 and 1920 with steel side panels, bolection mouldings around the windows and frosted‑glass toplights, riding on Churchward 9‑ft bogies. The model reproduces these details in die‑cast metal, including two stamped metal compensation beams for wheel bearing pick‑up, and offers two styles of under‑frame truss rods. The chassis is die‑cast with sprung metal buffers and accommodates 00‑gauge wheels (16.5 mm) while allowing clearance for 18.2 mm gauge wheels; axles are 26 mm over the ends.
Coach sides are made from separate ABS plastic components and feature gap‑free corridor connections suitable for R2 (438 mm) curves. The interior includes fitted luggage racks, separate shell ventilators on the roof (according to period), metal door and commode handles, and provision for destination boards. Interior lighting is fitted and a DCC decoder plug with a blanking plug is provided.
Couplings are close‑coupled on a cam to negotiate tight curves and include NEM pockets for magnetic couplings, though the model can also be used with NEM‑compatible traditional couplings supplied by the modeller. All fittings are supplied separately for the modeller to assemble and customise.