Meridionali 4-4-0 Locomotives in Italy


Class Details by Steve Llanso of Sweat House Media

Class Gruppo 170/Gruppo 540 FS 2 (Locobase 7410)

Data from Titre Exposition universelle internationale de 1889 a Paris. Rapports du jury internationale. Auteur - Volume France. Ministere du Commerce, de l'industrie. Picard, Alfred, ed. Volume Groupe VI - -Outillage et precedes des industries mecaniques. Electricite (5e partie) Classes 60 a 63. Rapport sur le materiel des chemins de fer; tables beginning on p. 183 ([] (accessed 1 September 2005).

Additional info from Tutto Treno rivista's website page [] (visited 4 February 2006), which has elevation drawings of every Ferro Strato locomotive and details on when and how many were built. The drawing shows a typical Eight-wheeler of the time with firebox over the driving axles and large steam dome over the front driving axle. The valve gear, which lay inside the frame, operated the outside-mounted slide valves through rocking levers.

1703, 1706, 1709, 1711, 1713, 1715 (Gruppo 540 FS 2) were built with a smaller boiler with less heating surface area. They had the same wheelbases but weighed less

Thirteen more 545 (FS 2) were delivered in 1890-1891 were larger, but had similar external dimensions and appearance.

Principal Dimensions by Steve Llanso of Sweat House Media

ClassGruppo 170/Gruppo 540 FS 2
Locobase ID7410
RailroadMeridionali
CountryItaly
Whyte4-4-0
Number in Class6
Road Numbers5403, 5406, 5409, 5411, 5413, 5415
GaugeStd
Number Built6
BuilderBorsig
Year1882
Valve GearStephenson
Locomotive Length and Weight
Driver Wheelbase (ft / m) 7.97 / 2.43
Engine Wheelbase (ft / m)21.98 / 6.70
Ratio of driving wheelbase to overall engine wheelbase 0.36
Overall Wheelbase (engine & tender) (ft / m)43.65 / 13.30
Axle Loading (Maximum Weight per Axle) (lbs / kg)32,408 / 14,700
Weight on Drivers (lbs / kg)65,036 / 29,500
Engine Weight (lbs / kg)101,192 / 45,900
Tender Loaded Weight (lbs / kg)65,477 / 29,700
Total Engine and Tender Weight (lbs / kg)166,669 / 75,600
Tender Water Capacity (gals / ML)2376 / 9
Tender Fuel Capacity (oil/coal) (gals/tons / Liters/MT) 5.30 / 4.80
Minimum weight of rail (calculated) (lb/yd / kg/m)54 / 27
Geometry Relating to Tractive Effort
Driver Diameter (in / mm)75.60 / 1920
Boiler Pressure (psi / kPa)145 / 10
High Pressure Cylinders (dia x stroke) (in / mm)17.91" x 23.62" / 455x600
Tractive Effort (lbs / kg)12,352 / 5602.78
Factor of Adhesion (Weight on Drivers/Tractive Effort) 5.27
Heating Ability
Tubes (number - dia) (in / mm)181 - 1.969" / 50
Flues (number - dia) (in / mm)
Flue/Tube length (ft / m)11.81 / 3.60
Firebox Area (sq ft / m2)88.26 / 8.20
Grate Area (sq ft / m2)21.74 / 2.02
Evaporative Heating Surface (sq ft / m2)1189 / 110.46
Superheating Surface (sq ft / m2)
Combined Heating Surface (sq ft / m2)1189 / 110.46
Evaporative Heating Surface/Cylinder Volume172.64
Computations Relating to Power Output (More Information)
Robert LeMassena's Power Computation3152
Same as above plus superheater percentage3152
Same as above but substitute firebox area for grate area12,798
Power L14325
Power MT293.22

All material Copyright © SteamLocomotive.com
Wes Barris