New Zealand Railways class EB
New Zealand 1925 5 produced
In 1925, the NZR had a battery locomotive built for shunting by the Goodman Manufacturing Co. in the USA. Four more were built in New Zealand four years later. The class designation was EB for “Electric Battery”. A total of 120 battery cells delivered an output of 32 hp. Although new batteries would have been needed shortly before the start of the Second World War, they were not replaced. It was not until the 1950s that they were rebuilt to diesel-electric locomotives with twice the power while retaining the traction motors. The central cab was replaced with an end cab. They were retired in the second half of the 1970s.
Technical data
General
| Property | as built | modernized |
|---|---|---|
| Built | 1925, 1929 | 1953 |
| Manufacturers | Goodman Manufacturing Company, Hillside | |
| Wheel arrangement | B | |
| Gauge | 1,067 mm (Cape gauge) | |
Dimensions and weights
| Property | as built | modernized |
|---|---|---|
| Length | 6.20 m | |
| Service mass | 12.2 t | |
| Adhesion mass | 12.2 t | |
| Axle load | 6.1 t | |
Power
| Property | as built | modernized |
|---|---|---|
| Power source | electric - battery | diesel-electric |
| Hourly power | 24 kW (33 PS) | 48 kW (65 PS) |
| Top speed | 19 km/h | |
Calculated values
| Property | as built | modernized |
|---|---|---|
| Power-to-weight ratio | 2.0 kW/t | 3.9 kW/t |
| Adhesive weight/Total | 1 : 1.00 | |
Power plant
| Property | as built | modernized |
|---|---|---|
| Engine | AEC Comet Mark III | |
| Engine type | 6-cyl. diesel |