loco-info.com - New Zealand Railways class N.C

Dimensions and Weights
Length	54 ft 10 in
Wheelbase	21 ft 1 in
Rigid wheelbase	9 ft
Total wheelbase	44 ft 7 in
Service weight	88,928 lbs
Adhesive weight	62,048 lbs
Total weight	142,240 lbs
Axle load	20,685 lbs
Water capacity	1,801 us gal
Fuel capacity	11,200 lbs (coal)

Boiler
Grate area	25 sq ft	20.4 sq ft
Firebox area	88 sq ft
Tube heating area	1,015 sq ft
Evaporative heating area	1,103 sq ft	1,124 sq ft
Total heating area	1,103 sq ft	1,124 sq ft

Variant	Nr. 5	Nr. 18

Power Plant
Driver diameter	49 in
Boiler pressure	180 psi	200 psi
Expansion type	compound
Cylinders	four, HP: 10 x 20 in and LP: 17 x 20 in

Power
Power source	steam
Estimated power	750 hp (559 kW)	675 hp (503 kW)
Optimal speed	52 mph	42 mph
Starting effort	9,279 lbf	10,310 lbf
with start valve	11,135 lbf	12,372 lbf

Calculated Values
Factor of adhesion	1 : 5.57	1 : 5.02
Power-to-weight ratio	0.0084 hp/lb	0.0076 hp/lb
Heating Area Equivalent	1,543 sq ft
Cylinder volume/HAE	1 : 878.09
Adhesive weight/Total	1 : 1.43
Tractive force/Heating area	1 : 2269.45	1 : 2474.50
Grate area/Heating area	1 : 40.59
Firebox/Tube area	1 : 11.53
HP/LP cylinders	1 : 2.89

steam locomotive

passenger

Vauclain compound

prototype

last changed: 09 2023

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