For those interested, here is some information on G42.

 

 

PRINCIPAL DIMENSIONS OF "G CLASS" LOCOMOTIVES

 

Imperial

Metric

Cylinders:(2 x 2)

 

 

                                          Diameter

13¼ ins

336.55 mm

                                          Stroke

18 ins

457.20 mm

Wheels, coupled:

3 ft diameter

91.40cm diameter

Pony Wheels

24½ ins

62.23 cm

Wheelbase, rigid:

6 ft 9 ins

205.74 cm

                                          TOTAL:

44 ft 6 ins

1,356.36 cm

Length overall:

49 ft 10 ins

1,518.92 cm

Width

9 ft 01 ins

276.86 cm

Height (Rail level to top of smoke stack)

10 ft 08 ins

325.12 cm

Weight in working order:

70 tons 3 cwt

71,272.4 kg

Adhesive weight:

56 tons 5 cwt

57,150 kg

Axle load (maximum):

9 tons 9 cwt

9,601.2 kg

Boiler heating surface:

 

 

                                           Flues and Tubes

955 sq ft

88.72 sq mtr

                                           Firebox

99 sq ft

9.20 sq mtr

                                           Super Heater

180 sq ft

16.72 sq mtr

                                           TOTAL:

1,234 sq ft

114.64 sq mtr

Grate area:

22.6 sq ft

2.10 sq mtr

Boiler Pressure:        

180 lb / sq in

1,240 kpa

Tractive effort @ 85% boiler pressure:

27,630 lbs

12,532.97 kg

Tank capacity (Front)

1,250 gals

5682.50 litres

Tank Capacity (Rear)

430 gals

1954.78 litres

                                            TOTAL:

1,680 gals

7,637.28 litres

Coal capacity:

3½ tons

3,556 kg

 

 

OTHER DETAILS

Wheel arrangement:

2-6-0+0-6-2

Valve Gear:

Walschaert’s.

Couplers:

M.C.B.

Speed Recorders:

Flaman.

 

Built by Beyer, Peacock & Co., Manchester, England 1925/1926

G41 — Issued to traffic: 05th June 1926

G42 — Issued to traffic: 28th June 1926