No 12 PIONEER     Pioneer was started as an improvement on Sapper, hence the similar military name. It was built with outside frames and rear pony truck to aid stability as Sapper, having inside frames, had a tendency to roll. The boiler is of similar dimensions to Sapper’s but with a larger fire-hole door and pressured to 120 lbs. sq. in.

Year built 1992 Builder Narogauge Ltd Engine No 12 Colour Blue Dimensions Length 171 ins  Width 26 ins Height 47 ins         Wheel arrangement 4-6-2 Wheel diameters Leading 6 ins Driving 10 ins   Trailing 6 ins Grate area 90 sq.'s No of tubes 0 Small diameter 0.75 ins 22 Large diameter 1 ins   Coal capacity 224 lbs Water capacity 60 gallons     Boiler Diameter 12.75 ins Boiler pressure 120 lbs sq.'s     Valve gear Baker Cylinders bore 3.5 ins   Stroke 4.25 ins   Tractive effort 531 lb.'s