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New Zealand Railways class H
In 1878, the New Zealand Railways opened the Rimutaka Incline over the mountains of the same name in the Wairarapa region of the North Island. To overcome the inline of 1 to 15 or 6.67 percent, they chose the Fell sys...
| New Zealand Railways class HRemove | |
|---|---|
| Variant | Standard |
| Built | 1875, 1886 |
| Manufacturers | Avonside;Neilson & Co. |
| Wheel arrangement | B1 zt |
| Gauge | 1067 mm |
| Length | 7341 mm |
| Service mass | 40439 kg |
| Top speed | 24 km/h |
| Power | |
| Engine |
General
| Property | New Zealand Railways class H Standard Remove |
|---|---|
| Built | 1875, 1886 |
| Manufacturers | Avonside, Neilson & Co. |
| Wheel arrangement | 0-4-2RT |
| Gauge | 1,067 mm |
Dimensions and weights
| Property | New Zealand Railways class H Standard Remove |
|---|---|
| Length | 7.34 m |
| Wheelbase | 4.34 m |
| Service mass | 40.4 t |
| Adhesion mass | 32.9 t |
| Water capacity | 3,244 l |
| Fuel capacity | 0.5 t (coal) |
Boiler
| Property | New Zealand Railways class H Standard Remove |
|---|---|
| Grate area | 1.561 m² |
| Evaporative heating surface | 73.765 m² |
| Total heating surface | 73.8 m² |
Power plant
| Property | New Zealand Railways class H Standard Remove |
|---|---|
| Driver diameter | 813 mm |
| Boiler pressure | 11 bar |
| Expansion type | simple expansion |
| Cylinders | four, 305 x 356 mm |
Power
| Property | New Zealand Railways class H Standard Remove |
|---|---|
| Power source | steam |
| Estimated power | 224 kW (305 PS) |
| Top speed | 24 km/h |
| Starting effort | 104.8 kN |
Calculated values
| Property | New Zealand Railways class H Standard Remove |
|---|---|
| Factor of adhesion | 1 : 3.08 |
| Optimal speed | 18 km/h |
| Power-to-weight ratio | 5.5 kW/t |
| Adhesive weight/Total | 1 : 1.23 |
| Tractive force/Heating surface | 1 : 29.66 |
| Grate area/Heating surface | 1 : 47.25 |
