loco-info.com - New Zealand Railways class F

General
Built	1872-1888
Manufacturer	Neilson & Co., Dübs & Co., Vulcan Foundry, Avonside, Robert Stephenson & Co., Yorkshire Engine Co., Black, Hawthorn & Co.
Axle config	0-6-0ST (Six-coupled)
Gauge	3 ft 6 in (Cape gauge)

Dimensions and Weights
Length	23 ft 3 1/2 in
Wheelbase	10 ft 5 in
Rigid wheelbase	10 ft 5 in
Service weight	43,008 lbs
Adhesive weight	43,008 lbs
Axle load	14,337 lbs
Water capacity	420 us gal
Fuel capacity	2,128 lbs (coal)

Boiler
Grate area	9.5 sq ft	9 sq ft
Firebox area		45 sq ft
Tube heating area		413 sq ft
Evaporative heating area	486.5 sq ft	458 sq ft
Total heating area	486.5 sq ft	458 sq ft

Variant	as built	new boiler

Power Plant
Driver diameter	36.5 in
Boiler pressure	130 psi	160 psi
Expansion type	simple
Cylinders	two, 10 1/2 x 18 in

Power
Power source	steam
Estimated power	175 hp (130 kW)	200 hp (149 kW)
Optimal speed	19 mph	17 mph
Top speed	43 mph
Starting effort	6,008 lbf	7,394 lbf

Calculated Values
Factor of adhesion	1 : 7.16	1 : 5.82
Power-to-weight ratio	0.0041 hp/lb	0.0046 hp/lb
Heating Area Equivalent		683 sq ft
Cylinder volume/HAE		1 : 805.02
Adhesive weight/Total	1 : 1.00
Tractive force/Heating area	1 : 2776.28	1 : 3629.31
Grate area/Heating area		1 : 45.90
Firebox/Tube area		1 : 9.18

steam locomotive

passenger

freight

tank locomotive

last changed: 09 2023

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