No 10 OFFA     Offa was started in 1984 to provide a yet more powerful engine. A second chassis was started at the same time and this became Zeus. Progress was slow because of the work involved building the new railway at Moors Valley. The boiler is 15 ins. diameter with a grate area of 155 sq. ins. combined with the largest cylinders, to date, on the railway. This engine has pulled a 25 coach Train with 198 passengers, plus three guards.

Year built 1991 Builder Narogauge Ltd Engine No 10 Colour Furness red Dimensions Length 172 ins  Width 26 ins Height 46 ins Wheel arrangement 2-6-2 Wheel diameters Leading 6 ins Driving 10 ins   Trailing 6 ins Grate area 155 sq.'s No of tubes n/a Small diameter 0.75 ins   22 Large diameter 1.25 ins Coal capacity 224 lbs Water capacity 70 gallons Boiler Diameter 15 ins Boiler pressure 100 lbs sq.'s Valve gear Walschaerts Cylinders bore 4.63 ins Stroke 4.25 ins Tractive effort 774 lb.'s