Photo © Steve Huddy

5542 is a member of the ex GWR 4575 Class of 2-6-2T prairie tanks - the small prairies - which were introduced in 1927.  They were designed by C.B. Collett, a development of G.J. Churchward's 45xx class with enlarged tanks.

Weight: 61 tons  (full)                     Driving wheel diameter: 4' 7 1/2"

Pony Wheel diameter: 3' 2"             Trailing Wheel diameter: 3' 2"

Boiler pressure: 200 lb/sq.in.          Tractive effort: 21,250 lb

Cylinders: (Outside) 17"x 24"          Valve gear: Stephenson

Tank Capacity:     1,300 gals.          Coal Capacity:

Length: 36' 4 1/2"                          Width: 8' 9"                            Height: 13'

Axle load: 15 tons 11 cwt

Grate area: 16.6 sq.ft.

Heating surface:-

Tubes: 992.51 sq.ft.   Firebox 94.25sq.ft.