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New Haven classes J-1 and J-2
The New Haven only operated two classes of Mikados, all of which were built by ALCO-Schenectady in 1916. All had drivers of 63 inches and a grate area of 59.2 square feet , but the two classes differed in size. The la...
General
| Property | New Haven classes J-1 and J-2 Remove |
|---|---|
| Built | 1916 |
| Manufacturers | ALCO |
| Wheel arrangement | 2-8-2 (Mikado) |
| Gauge | 1,435 mm (Standard gauge) |
Dimensions and weights
| Property | New Haven classes J-1 and J-2 Remove |
|---|---|
| Length | 22.86 m |
| Wheelbase | 10.77 m |
| Rigid wheelbase | 5.18 m |
| Total wheelbase | 19.80 m |
| Service weight | 114.2 t |
| Adhesive weight | 84.3 t |
| Axle load | 21.4 t |
| Total weight | 184 t |
| Water capacity | 28,391 l |
| Fuel capacity | 10.9 t (coal) |
Boiler
| Property | New Haven classes J-1 and J-2 Remove |
|---|---|
| Grate area | 5.5 m² |
| Firebox surface | 25.827 m² |
| Tube heating surface | 213.213 m² |
| Evaporative heating surface | 239.04 m² |
| Superheater surface | 60.944 m² |
| Total heating surface | 300.0 m² |
Power plant
| Property | New Haven classes J-1 and J-2 Remove |
|---|---|
| Driver diameter | 1,600 mm |
| Boiler pressure | 12.4 bar |
| Expansion type | simple expansion |
| Cylinders | two, 635 x 762 mm |
Power
| Property | New Haven classes J-1 and J-2 Remove |
|---|---|
| Power source | steam |
| Estimated power | 1,566 kW (2,129 PS) |
| Starting effort | 202.6 kN |
Calculated values
| Property | New Haven classes J-1 and J-2 Remove |
|---|---|
| Factor of adhesion | 1 : 4.08 |
| Optimal speed | 47 km/h |
| Power-to-weight ratio | 13.7 kW/t |
| Heating Surface Equivalent | 490.1 m² |
| Cylinder volume/HSE | 1 : 984.85 |
| Adhesive weight/Total | 1 : 1.35 |
| Tractive force/Heating surface | 1 : 14.10 |
| Grate area/Heating surface | 1 : 54.54 |
| Firebox/Tube surface | 1 : 8.26 |
| Total/Superheater | 1 : 3.92 |
