Central RR of New Jersey class L-5
The class L-5 designated 35 4-6-0 locomotives built by ALCO-Brooks for the Central Railroad of New Jersey between 1901 and 1906. The first 17 of the original class L-5 were delivered in 1901, followed by three additional batches which were virtually identical. Only two L-5a were delivered in 1902 and six L-5b in 1903. The ten L-5c followed in 1906. Originally all were designated T29, where the T stood for “Ten-wheeler” and the 32 for the starting tractive effort in thousands of pounds.
Like many locomotives of this railroad, they were Camelbacks with a large Wootten firebox that burned fine anthracite. For long-distance passenger service, their tenders had a water scoop to refill on the run. The first ones were superheated between 1918 and 1921 and became L-5as and L-5bs. Most others were superheated as L-5ds and L-5es between 1923 and 1932. These also received an extended wagon top firebox and cylinders with a diameter of 21 instead of 20 inches. As this increased their tractive effort to around 32,000 pounds, these were also classified as T32. All were retired between 1934 and 1953.
Technical data
General
| Property | as built | rebuilt L-5ds, es |
|---|---|---|
| Built | 1901-1906 | 1923-1932 |
| Manufacturers | ALCO | Elizabethport |
| Wheel arrangement | 4-6-0 (Ten-wheeler) | |
| Gauge | 1,435 mm (Standard gauge) | |
Dimensions and weights
| Property | as built | rebuilt L-5ds, es |
|---|---|---|
| Wheelbase | 7.54 m | |
| Total wheelbase | 15.47 m | 17.15 m |
| Service mass | 79.2 t | 91.4 t |
| Adhesion mass | 59.9 t | 69.7 t |
| Total mass | 124.5 t | 160.3 t |
| Rigid wheelbase | 4.12 m | |
| Axle load | 20 t | 23.2 t |
| Water capacity | 18,927 l | 28,391 l |
| Fuel capacity | 10.9 t (coal) | 11.8 t (coal) |
| Length | 19.59 m | |
Boiler
| Property | as built | rebuilt L-5ds, es |
|---|---|---|
| Grate area | 7.646 m² | 7.584 m² |
| Firebox surface | 16.537 m² | 16.128 m² |
| Tube heating surface | 216.836 m² | 160.072 m² |
| Evaporative heating surface | 233.373 m² | 176.2 m² |
| Total heating surface | 233.4 m² | 210.9 m² |
| Superheater surface | 34.746 m² |
Power plant
| Property | as built | rebuilt L-5ds, es |
|---|---|---|
| Driver diameter | 1,753 mm | |
| Boiler pressure | 14.5 bar | |
| Expansion type | simple expansion | |
| Cylinders | two, 508 x 711 mm | two, 533 x 711 mm |
Power
| Property | as built | rebuilt L-5ds, es |
|---|---|---|
| Power source | steam | |
| Estimated power | 1,044 kW (1,419 PS) | 1,230 kW (1,672 PS) |
| Starting effort | 128.9 kN | 142.1 kN |
Calculated values
| Property | as built | rebuilt L-5ds, es |
|---|---|---|
| Factor of adhesion | 1 : 4.56 | 1 : 4.81 |
| Optimal speed | 50 km/h | 53 km/h |
| Power-to-weight ratio | 13.2 kW/t | 13.5 kW/t |
| Heating Surface Equivalent | 316.1 m² | 326.3 m² |
| Cylinder volume/HSE | 1 : 912.16 | 1 : 974.00 |
| Adhesive weight/Total | 1 : 1.32 | 1 : 1.31 |
| Tractive force/Heating surface | 1 : 11.53 | 1 : 14.07 |
| Grate area/Heating surface | 1 : 30.52 | 1 : 27.81 |
| Firebox/Tube surface | 1 : 13.11 | 1 : 9.93 |
| Total/Superheater | 1 : 5.07 |