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S Class Single Fairlie
CLASS  S    0-6-4 T

Introduced: 1880 Number in Class: 7

S Class Register

Locomotive Specifications

  Avonside Engine Co., Bristol, England

Engine Weight:    
36.0 tons
Tender Weight:     Total Weight:    36.0 tons Adhesive Weight:    
22.8 tons
Length over Buffers:    
33' 0"
Total Wheelbase:    23' 7" Engine Wheelbase:    23' 7" Coupled Wheelbase:    
6' 9"
Tender Wheelbase:     Driver Wheel Dia.:    36" Cylinders HP:    
Two - 13" x 16"
Cylinders LP:    
Grate Area:    14.0 sq ft Evaporative Area:    
741 sq ft
Superheated Area:     Working Pressure:    
130 psig
Tractive Effort:    
7705 lbs f
Coal Capacity:    1.5 tons Oil Capacity:     Water Capacity:    
1162 gals

Remarks:    Another Single Fairlie type, rather larger and heavier than 'R' class engines. Originally assigned to the Wellington-Summit section of the Rimutaka line, they were also employed in Taranaki and Wairarapa districts. Like the "R" class, they were fitted with Walschaerts valve motion, were good steamers, rode well with a roomy cab that applealed to engine crews. These splendid little lcomotives enjoyed a service life of more than 40 years.