No 7 AELFRED     This engine combines the main features of Sapper and Medea. Its appearance with long side-tanks was inspired by the Vale of Rheidol tank engines. The more generous proportions compared with the earlier tank locos have resulted in a more comfortable cab. Subsequent alterations from inside-frame pony and bogie trucks to outside-frame types have given greater stability to the ride.

Year built 1985 Builder Narogauge Ltd Engine No 7 Colour Larch green Dimensions Length 90 ins  Width 26 ins Height 47 ins         Wheel arrangement 2-6-4T Wheel diameters Leading 6 ins Driving 9 ins   Trailing 6 ins Grate area 90 sq.'s No of tubes -- Small diameter 0.75 ins 16 Large diameter 1.25 ins   Coal capacity 130 lbs Water capacity 22 gallons     Boiler Diameter 12.75 ins Boiler pressure 100 lbs sq.'s     Valve gear Walschaerts Cylinders bore 3.5 ins   Stroke 4.25 ins   Tractive effort  492 lb.'s