Magyar Allamvasutak 2-8-0 Locomotives in Hungary

Class Details by Steve Llanso of Sweat House Media

Class 402 (Locobase 1573)

Used the same boiler and cylinders as the 424-class 4-8-0s. Obviously the 4-8-0 was the preferred arrangement, as over 500 of those were built to 2 of these.

A[nthony] E[dward] Durrant, The steam loc

Principal Dimensions by Steve Llanso of Sweat House Media

Locobase ID1573
RailroadMagyar Allamvasutak (MAV)
Number in Class2
Road Numbers
Number Built2
Valve Gear
Locomotive Length and Weight
Driver Wheelbase (ft / m)
Engine Wheelbase (ft / m)
Ratio of driving wheelbase to overall engine wheelbase
Overall Wheelbase (engine & tender) (ft / m)
Axle Loading (Maximum Weight per Axle) (lbs / kg)
Weight on Drivers (lbs / kg)143,808 / 65,230
Engine Weight (lbs / kg)174,496 / 79,150
Tender Loaded Weight (lbs / kg)
Total Engine and Tender Weight (lbs / kg)
Tender Water Capacity (gals / ML)
Tender Fuel Capacity (oil/coal) (gals/tons / Liters/MT)
Minimum weight of rail (calculated) (lb/yd / kg/m)60 / 30
Geometry Relating to Tractive Effort
Driver Diameter (in / mm)53.20 / 1351
Boiler Pressure (psi / kPa)185 / 13
High Pressure Cylinders (dia x stroke) (in / mm)23.6" x 26" / 600x660
Tractive Effort (lbs / kg)42,803 / 19415.14
Factor of Adhesion (Weight on Drivers/Tractive Effort) 3.36
Heating Ability
Tubes (number - dia) (in / mm)
Flues (number - dia) (in / mm)
Flue/Tube length (ft / m)
Firebox Area (sq ft / m2)
Grate Area (sq ft / m2)47.88 / 4.45
Evaporative Heating Surface (sq ft / m2)2309 / 214.59
Superheating Surface (sq ft / m2)624 / 57.99
Combined Heating Surface (sq ft / m2)2933 / 272.58
Evaporative Heating Surface/Cylinder Volume175.41
Computations Relating to Power Output (More Information)
Robert LeMassena's Power Computation8858
Same as above plus superheater percentage10,718
Same as above but substitute firebox area for grate area
Power L1
Power MT

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