Alta Italia / Piemonte Stato / Sudbahn 0-6-0 Locomotives in Italy


Class Details by Steve Llanso of Sweat House Media

Class 1067 (Locobase 20674)

Data from Ferrovie Dell' Alta Italia, Album Delle Locomotive (Torino, 1o Luglio 1876), T59.

Locobase 20673 describes the 20 saddle tanks delivered to the Piemontese in 1853-1855. These small "tipo primitivos" proved inadequate after a time and the Officina Torino substantially modified four of the engines. They retained the saddle tank, but added 400 mm (15.75 in) to the tube lengths. A third axle was located about 2 metres (6 1/2 ft) behind the second. Such changes dramatically altered the look of these locomotives.

The Rete Mediterraneo (RM) renumbered the entire quartet in 1885. Of these, two were renumbered 8151-8152 by the Ferro dello Stato (FS) in 1905.

Locobase found an inconsistencies between the given values for the tube diameters, tube lengths, and for the evaporative heating surface area given as 63.8 sq m. The EHS value shown in Locobase's specs is composed of the firebox heating surface area given in the diagram and the tube heating surface area calculated from the stated tube length, external tube diameter, and count.


Class 154/1106 (Locobase 20677)

Data from Ferrovie Dell' Alta Italia, Album Delle Locomotive (Torino, 1o Luglio 1876), T61.

This Stephenson decade of six-coupled saddle-tank shunters went in a batch to the Strade Ferrate dell'Alta Italia's (SFAI) in 1865.

The Rete Adriatico (RA) and Rete Mediterraneo (RM) divided the class in 1885. The RM's four were renumbered 5301-5304 while the RA gave theirs numbers 2011-2016. Seven of the ten formed Gruppo 891 on the Ferro dello Stato (FS) in 1905.

Locobase found an inconsistencies between the given values for the tube diameters, tube lengths, and for the evaporative heating surface area given as 85.0 sq m. The EHS value shown in Locobase's specs is composed of the firebox heating surface area given in the diagram and the tube heating surface area calculated from the stated tube length, external tube diameter, and count.


Class 601/1101 (Locobase 20676)

Data from Ferrovie Dell' Alta Italia, Album Delle Locomotive (Torino, 1o Luglio 1876), T59. Works numbers 909-910 in 1864, 914-915 1007 in 1866.

Locobase has only the Strade Ferrate dell'Alta Italia's (SFAI) diagram to go by, but it's enough to comment that this quintet of small six-coupled shunters had their water tanks placed unusually high on the boiler.

The Rete Adriatico (RMA) renumbered the class in 1885. They formed Gruppo 895 on the Ferro dello Stato (FS) in 1905.

Locobase found an inconsistencies between the given values for the tube diameters, tube lengths, and for the evaporative heating surface area given as 57.6 sq m. The EHS value shown in Locobase's specs is composed of the firebox heating surface area given in the diagram and the tube heating surface area calculated from the stated tube length, external tube diameter, and count.


Class 805 (Locobase 20667)

Data from Ferrovie Dell' Alta Italia, Album Delle Locomotive (Torino, 1o Luglio 1876), T51 and T51bis.

Koechlin supplied road numbers 805-838 from works numbers 880-885 in 1864; 993-998, 1047-1058 in 1866; and 1173-1182 in 1868; road numbers 934-945 came in 1872-1873 . Schneider-Le Creusot produced road numbers 839-863 from their works numbers 879-885, 944-948 in 1865; 1069-1071, 1132-1137, and 1150-1153 in 1868; Schneider added 910-921 in 1872. Fives-Lille chipped in with road numbers 922-933 in 1871-1872. Cockerill supplied by far the largest number of this class (road numbers 864-909, 946-970) in 1871 and 1873.

This was the most numerous class of six-coupled goods locomotives in service in Italy at the time of its introduction. In almost all respects, the design reflected then-current practice and seems to have met its requirements quite well.

Locomotives 829-863 trailed four-wheel tenders when delivered; the others all used six-wheel tenders. Boilers in a few of the class were later modified to hold more water and more steam.

In 1885, the SFAI was subsumed to two larger networks and the class was divided between the Rete Mediterranea (RM) and Rete Adriatico (RA). Most of the lower numbered (805-838) went to the RA, where they took road numbers 3901-3930. The RM took four from the 829-838 batch and all those remaining from 839-863, renumbering them 3201-3229.

Principal Dimensions by Steve Llanso of Middle Run Media
Class1067154/1106601/1101805
Locobase ID20674 20677 20676 20667
RailroadAlta Italia (SFAI)Piemonte Stato (SFAI)Sudbahn (SFAI)Alta Italia (SFAI)
CountryItalyItalyItalyItaly
Whyte0-6-0ST0-6-0ST0-6-0ST0-6-0
Number in Class4105166
Road Numbers1067-1070/5201-5204/8151-8152154-159, 30-33/1106-1115/1417-1426/8991-899601-605/1101-1105/1412-1416/2001-2005/8981-8985805-1000
GaugeStdStdStdStd
Number Built105166
BuilderSFAIRobert Stephenson & CoKoechlinseveral
Year1870186118641864
Valve GearStephensonStephensonStephensonStephenson
Locomotive Length and Weight
Driver Wheelbase (ft / m)15.42 / 4.7010.48 / 3.19 8.53 / 2.6011.06 / 3.37
Engine Wheelbase (ft / m)15.42 / 4.7010.48 / 3.19 8.53 / 2.6011.06 / 3.37
Ratio of driving wheelbase to overall engine wheelbase1111
Overall Wheelbase (engine & tender) (ft / m)15.42 / 4.7010.48 / 3.19 8.53 / 2.6035.70 / 10.88
Axle Loading (Maximum Weight per Axle) (lbs / kg)27,337 / 12,40028,219 / 12,80021,385 / 970027,999 / 12,700
Weight on Drivers (lbs / kg)69,446 / 31,50079,807 / 36,20063,273 / 28,70077,603 / 35,200
Engine Weight (lbs / kg)69,446 / 31,50079,807 / 36,20063,273 / 28,70077,603 / 35,200
Tender Loaded Weight (lbs / kg)44,423 / 20,150
Total Engine and Tender Weight (lbs / kg)122,026 / 55,350
Tender Water Capacity (gals / ML)792 / 3660 / 2.50792 / 31848 / 7
Tender Fuel Capacity (oil/coal) (gals/tons / Liters/MT) 0.80 / 1 0.70 / 1 0.80 / 1 3.30 / 3
Minimum weight of rail (calculated) (lb/yd / kg/m)39 / 19.5044 / 2235 / 17.5043 / 21.50
Geometry Relating to Tractive Effort
Driver Diameter (in / mm)42.10 / 107048.40 / 123041.70 / 106051.80 / 1316
Boiler Pressure (psi / kPa)101.50 / 700101.50 / 700101.50 / 700116 / 800
High Pressure Cylinders (dia x stroke) (in / mm)13.98" x 21.97" / 355x55815.98" x 22.01" / 406x55915.75" x 18.11" / 400x46017.72" x 25.59" / 450x650
Tractive Effort (lbs / kg)8799 / 3991.1610,019 / 4544.559295 / 4216.1515,295 / 6937.70
Factor of Adhesion (Weight on Drivers/Tractive Effort) 7.89 7.97 6.81 5.07
Heating Ability
Tubes (number - dia) (in / mm)123 - 1.969" / 50156 - 1.969" / 50134 - 1.89" / 48195 - 1.969" / 50
Flues (number - dia) (in / mm)
Flue/Tube length (ft / m)12.04 / 3.6712.27 / 3.7410.14 / 3.0913.94 / 4.25
Firebox Area (sq ft / m2)73.20 / 6.8075.35 / 753.82 / 594.72 / 8.80
Grate Area (sq ft / m2)11.52 / 1.0712.81 / 1.1910.76 / 116.15 / 1.50
Evaporative Heating Surface (sq ft / m2)837 / 77.761062 / 98.66726 / 67.451496 / 138.98
Superheating Surface (sq ft / m2)
Combined Heating Surface (sq ft / m2)837 / 77.761062 / 98.66726 / 67.451496 / 138.98
Evaporative Heating Surface/Cylinder Volume214.44207.86177.78204.81
Computations Relating to Power Output (More Information)
Robert LeMassena's Power Computation1169130010921873
Same as above plus superheater percentage1169130010921873
Same as above but substitute firebox area for grate area74307648546310,988
Power L12195230617192700
Power MT209.05191.11179.69230.11

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