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Hungarian State Railways class 601
Since the MÁV had already had good experiences with the Mallets of the type VIm (or class 651), even more powerful Mallets were built as class 601 from 1914 onwards. Thanks to an additional leading axle , they now had...
General
| Property | Hungarian State Railways class 601 late batches |
|---|---|
| Built | 1914-1920 |
| Manufacturers | MÁVAG |
| Wheel arrangement | 2-6-6-0 |
| Gauge | 1,435 mm (Standard gauge) |
Dimensions and weights
| Property | Hungarian State Railways class 601 late batches |
|---|---|
| Length | 22.57 m |
| Length loco | 14.57 m |
| Wheelbase | 11.90 m |
| Rigid wheelbase | 1.70 m |
| Empty weight | 99.8 t |
| Service weight | 109.4 t |
| Adhesive weight | 96.9 t |
| Axle load | 16.4 t |
| Total weight | 162.5 t |
| Water capacity | 23,000 l |
| Fuel capacity | 8 t (coal) |
Boiler
| Property | Hungarian State Railways class 601 late batches |
|---|---|
| Grate area | 5.24 m² |
| Firebox surface | 25.7 m² |
| Tube heating surface | 221 m² |
| Evaporative heating surface | 246.7 m² |
| Superheater surface | 87.3 m² |
| Total heating surface | 334.0 m² |
Power plant
| Property | Hungarian State Railways class 601 late batches |
|---|---|
| Driver diameter | 1,440 mm |
| Boiler pressure | 15 bar |
| Expansion type | compound |
| Cylinders | four, HP: 520 x 660 mm and LP: 850 x 660 mm |
Power
| Property | Hungarian State Railways class 601 late batches |
|---|---|
| Power source | steam |
| Indicated power | 1,736 kW (2,360 PS) |
| Top speed | 60 km/h |
| Starting effort | 230.0 kN |
| Starting effort simple | 276.0 kN |
Calculated values
| Property | Hungarian State Railways class 601 late batches |
|---|---|
| Factor of adhesion | 1 : 4.13 |
| Optimal speed | 47 km/h |
| Power-to-weight ratio | 15.9 kW/t |
| Heating Surface Equivalent | 549.8 m² |
| Cylinder volume/HSE | 1 : 1,191.07 |
| Adhesive weight/Total | 1 : 1.13 |
| Tractive force/Heating surface | 1 : 14.38 |
| Grate area/Heating surface | 1 : 63.74 |
| Firebox/Tube surface | 1 : 8.60 |
| Total/Superheater | 1 : 2.83 |
