Locomotive Facts & Figures  
  Builder: Narogauge Ltd 1992   No.12 Pioneer 4-6-2
     

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. The boiler is of similar dimensions to Sapper’s but with a larger fire-hole door and pressured to 120 lbs/in2.

 
  Dimensions: Length 171 ins
Width 26 ins
Height 47 ins
  Wheel diameters: Leading 6 ins
Driving 10 ins
Trailing 6 ins
  No. of tubes: Large dia. 1¼ ins x 22
  Grate area: 90 in2
  Coal capacity: 224 lbs
  Water capacity: 60 gallons
  Boiler diameter: 12¾ ins
  Boiler pressure: 120 lbs/in2
  Valve gear: Walschaerts
  Cylinder bore: 3½ ins
  Cylinder stroke: 4¼ ins
  Tractive effort: 531 lbs
  Livery: Blue
  Owner: Narogauge Ltd
 
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