I don’t think that kits are available but if you are ambitious enough, drawings of the original Beyer Peacock engine are available from Manchester Science Museum. These are of the engine in its original form – 0-4-0 before Mr. McClean added the trailing wheels.
The Chasewater Railway Museum has recently taken on loan a double-0 gauge model of ‘Chawner’ similar, of course, to the other four. This model was built from photographs I believe.
Photos of the model are below.
0-4-2 Saddle Tank with inside cylinders
Driving Wheels 4 ft dia.
Trailing Wheels 3 ft dia.
Cylinders 14” X 20”
Working Pressure 125 lbs per sq. in.
Total Heating Surface 645 sq. ft.
Water Capacity 640 galls.
Coal Capacity 2½ tons
Weight in working order 28 tons
Total length 25 ft. 6 ins.
This engine is remarkably large for an ‘industrial’ engine of this period, 4ft. driving wheels, 125lbs boiler pressure, 28 ton weight and 0-4-2 wheel arrangement being better than many main line engines in 1856.