GWR 51xx
Advanced model kits Technical detail


  Scale            : 10mm : 1ft

Length         : xxx mm (23.5”)

Radius          : 2.3m  (7’ 6”) minimum  

Weight         : 3.5- 4 Kg   estimated.

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

                       :  to ‘toast rack’ style wick burner.


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, water level test cock and pressure gauge.

                        : Spirit valve in rear bunker

                         Bypass valve on side tank for water pumps.


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 both side tanks and bunker

                       : Hand pump with bypass valve in side tank.

                       : Axle driven pump with its pipework, clack valve and boiler feed.

General         :  Loco suspension, buffers and coupling hooks sprung.

                         Wheels and axles are to Gauge One ‘Standard’ dimensions.

Production complete :