Barrett Engineering logo
Manufactures of Gauge 1
Live Steam Locomotive Model kits
and accessories in 10mm scale

Director Mr S.Barrett     Company Reg No. 8391616

G.W.R 4-4-2 ‘SCOTT’
Complete kit Spirit


Conversion kit     £40
From 4-6-0 to 4-6-2

Production :-     August 2018                  
Technical details

Select technical detail to view a description of our steam kit design.


  The Genealogy of the 2 cylinder ‘SAINTS’

      G. J. Churchward started to develop his new designs in 1901, before he took over from William Dean in 1902. His first production express locos were  a series of Atlantics and 4-6-0s (2971 - 2990) They all had 6’ 8 1/2” driving wheels, 3’3” bogie wheels, inside steam pipes and 3000 gallon tenders. These appeared in 1905 and were classed as Scotts as they bore the names from Walter Scott’s Waverley novels. Several were built as 4-4-2s and later converted to 4-6-0, with others treated visa-versa, whilst the merits of both wheel arrangements were being gained. 1906 saw the completion of ten further 4-6-0s (2901 - 2910) called ‘The Ladies’. They were fitted with both long or short cone boilers.

     They all had the square footplate drop forward of the cylinders and no drop at the cab end. 1907 saw the first of the true Saints, Nos 2911 - 2930. These all had the long cone No 1 boiler with curved footplate drop at front and rear, and carried the names of Saints. The final version appeared in 1911 as the Courts (2931 - 2955).These were visually the same as the Saints but incorporated a number of technical advances. In December 1912 there was a revision of the Company’s numbering scheme and all the above groups were classed as Saints.


     These kits are designed for spirit firing with a sufficient amount of detail to provide a robust working model.  Some brakegear components are supplied to allow the modeller to add extra detail. The GW 3000 gallon tender which is easy to build is standard. the 3500 gallon version is also available.  In common with our other designs, the working valvegear will be a robust, slip eccentric, protected between the frames.

      The model is designed to be either 4-6-0 or 4-4-2 and the basic price will build one version. For a few pounds more the extra conversion bits can be purchase to convert from one design to the other, for example exchange rear drivers for the pony.


      These kits produced for those whose machining facilities or skills are limited or whose modelling time is at a premium.

         The boiler is built, tested and certified. The cylinder units come as a ‘loose assembly’ with pistons and valves in place ready for you carry out the final assembly and seal it up. Items such as hand and axlepump bodies are pre assembled. The kit includes  laser cut steel items, etched brass components, all machining done, pressure gauge, screws, nuts, rivets, ‘O’ ring seals, springs etc. to complete the assembly.

           You will require a bench and vice, some hand tools, a drilling facility (which could be an electric drill on a stand) and a small gas torch for soldering. The work includes bending sheet metal, drilling piloted holes out to size, tapping threads in holes ( in many cases nuts could be used instead), soft and hard ( silver) soldering of small items.

          The model making hobby is littered with part built projects which have been abandoned because the modeller has hit a problem. Included in the price are two hours of our time, a ‘get out of trouble’ service. It could be advice on the phone, a practical soldering training session in our works, correcting a mishap or setting valve timing. Apart from phone calls, a modest charge will be made for time spent over your two hours.

         We can also supply replacements for individual components providing they are returned for us to identify. For etched items there will be charge depending on the size. Whitemetal returned with stamped addressed packing are free. Laser cut steel may be a problem as there are minimum order quantities involved and we shall only order a limited number of spares.

          The Construction  Guide comprises over  30 pages of photographs, exploded diagrams produced on 3D CAD and text, together with identification diagrams and drawings. It takes you through each stage, including jigs and methods, settings and adjustments, finishing with operation and use.

Move over pictures to magnify

 Scale           : 10mm : 1ft

 Length         :600mm (24”) estimated

 Radius         : Minimum 2.3m  (7’ 6”)
  Weight        : 5Kg  (10 LB)  estimated.

 Fuel             : Alchohol  (Methylated spirit) supplied by constant level feed system.

 Boilers         : Internally fired, multi flue, superheated. with safety  valve.
                     : Built from copper and bronze, silver soldered throughout.
                     : Tested to 200psi  (13bar) Max. allowable working pressure 100psi (6.5bar)

 Controls       : Regulator, blower, pressure gauge.
                     : Spirit models have spirit valve and water level test cock.

 Cylinders     : Two, 12.7mm dia x 22mm stroke (1/2” x 7/8”)

 Valvegear    : Slip eccentric, slide valve, between frames.

 Lubrication   :  Displacement (Rosco) type.

 Water feeds : Water carried in the tender which contains hand  pump and  bypass valve.
                     : An axledriven pump with its pipework, clack valve and boiler feed.
                     : High pressure ‘ball & socket’ coupling between loco and tender.

 General       : Loco suspension, buffers and coupling hooks sprung.
                    : Wheels and axles are to Gauge One ‘Standard’ dimensions.