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This is an N gauge model of the Stockton & Darlington Railway locomotive ‘Derwent’. Built in 1845 to the ‘Tory’ class design of Timothy Hackworth, it operated commercially until 1898, last steaming as a preserved engine in 1925. Today it is displayed at the Darlington Railway Centre and Museum.
Combined with the N Gauge ‘Derwent’ tenders (the engine having two, one each for coal and water), this scratch aid enables an unpowered free-rolling model engine. Coupled to a motorised coach or truck (each separately available, plus free-rolling coaches and trucks), a fully working 'Era 1' N Gauge train can be created.
Necessary to Complete:
Wheels – see below for details
Couplings (the method used is at the builder's discretion)
Weight (the boiler is hollow)
Slide bars & coupling rods (these can be formed from wire fitting into pre-drilled holes in the cylinder and its support plate – please see video below. I have also been informed Dapol Terrier connecting rods can also be used.)
(NB small strips of styrene will hold the driving wheels in place)
Optional additional details to scratchbuild (at the builder's discretion):
Safety valves (location pre-drilled and main body units ready-included)
Running board sides (across the slide bars)
Regulator and reverser levers (plus other control/valve rodding)
As the original used Hackworth plug wheels (while others used ordinary spoked wheels), various options have been made available:
3D-printed N gauge Hackworth wheels (intended for static display; untested as working wheels)
Graham Farish Jinty driving wheels (available as spares); 10.5mm diameter including flange, 1.5mm axle. These can be used as provided, or with paper over-lays to represent the prototypes wheels. These are available free of charge to all who purchase the model – please message me via Shapeways or my Facebook group with an email address and I can send this as a pdf.
I hope you enjoy this unusual and eye-catching model.