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6800 'Grange' class introduction

Running numbers: 6800 - 6879.

Built:     1936-1938     (6800 - 6879) to lot number 308

    The 'Grange' class no. 6800 Arlington Grange'Grange' class of locomotives were the 5 feet 8 inch 4-6-0's outlined as long ago as 1901 by Churchward's Standardisation Plan and for so long advocated by the Running Department until the advent of the 'Hall' class.

        The 'Granges' were intended to replace the 300 strong class of 43xx 2-6-0 locomotives using their wheels and motion onto the new engines, but only eighty had been built when war interrupted the programme and it was never revived. The class was a smaller-wheeled version of the 'Hall' class with the platform raised over the cylinders. The first three members of the class were fitted with cast iron chimneys until a new, smaller chimney was designed, appropriately called the 'Grange' type. Wheelsets for the first batch of thirty 'Granges' came from a pool of reconditioned parts obtained from engine numbers 4300/1/4/5/6/8-11/13-15/17/23/24/27-34/36/38-41/44-48/50/51.

       The power classification of the 'Grange' class was 5-MT, the G.W.R. power class was D and the route availability was RED.

Detail Alterations. 
       One member of the class, 6851 Hurst Grange, was fitted with a 3 row superheater.

Preservation.
       No members of the 'Grange' class were saved for preservation.

For those of you who like statistics, No. 6807 Birchwood Grange with her tender comprised the following metals:

    6807 Tender  
  Steel 57 tons 13 cwt (58,723 kg) 16 tons 6 cwt (16,621 kg)  
  Cast Iron 5 tons 10 cwt (5,600 kg) 1 ton 16 cwt (1,832 kg)  
  Copper 2 tons 9 cwt (2,520 kg) 84 pounds (38 kg)  
  Hardened Lead 1 ton 10 cwt (1,540 kg) 0  
  Gun Metal 1 ton 2 cwt (1,132 kg) 0  
  Bronze 5 cwt (254 kg) 168 pounds (76 kg)  
  White Mteal 196 pounds (89 kg) 28 pounds (12.7 kg)  
  Brass 84 pounds (38 kg) 0  
  Total Weights 68 tons 13 cwt (69,898 kg) 18 tons 5 cwt (18,581 kg)  

Specifications.

Cylinders (2) 18 x 30 inches Driving wheel diameter 5 feet 8 inches
Bogie wheel diameter 3 feet 0 inches Tractive Effort 28,875 pounds
Boiler type Number 1 Boiler maximum dia. 5 feet 6 inches
Boiler minimum dia. 4 feet 10 13/16 inches Fire tubes, no. and dia. 176 x 2 inches
Flue tubes, no. and dia. 14 x 5 1/8 inches Superheater tubes, no. and dia. 84 x 1 inch
Boiler pressure 225 lbs/square inch. Boiler length 15 feet 2 7/16 inches
Area of firegrate 27.07 square feet Heating surfaces, tubes 1,686.6 square feet
Heating surfaces, firebox 154.78 square feet Heating surfaces, superheater 253.38 square feet


    

Details: Grange class, 6800 to 6839     Details: Grange class, 6840 to 6879

Castle class introduction     County class introduction     Hall class introduction     King class introduction
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