Paris tramways 0-4-2 Locomotives in France


Class Details by Steve Llanso of Sweat House Media

Class 38 (Locobase 7401)

Data from Titre Exposition universelle internationale de 1878 a Paris. Rapports du jury internationale..Volume Groupe VI - Classe 64. Rapport sur le materiel des chemins de fer. p. 56 (cnum.cnam.fr/CGI/fpage.cgi?8XAE277-11.1/54/100/312/0/0 (accessed 1 September 2005) table.

A contemporaneous report by Anatole Mallet simply noted that this locomotive was being tested by a Paris tramway. Its carrying axle had enough play to allow it to help the motor steer around sharp curves.

Principal Dimensions by Steve Llanso of Sweat House Media

Class38
Locobase ID7401
RailroadParis tramways
CountryFrance
Whyte0-4-2T
Number in Class1
Road Numbers
GaugeStd
Number Built1
BuilderSA Saint Leonard
Year1877
Valve GearWalschaert
Locomotive Length and Weight
Driver Wheelbase (ft / m)
Engine Wheelbase (ft / m) 6.40 / 1.95
Ratio of driving wheelbase to overall engine wheelbase
Overall Wheelbase (engine & tender) (ft / m) 6.40 / 1.95
Axle Loading (Maximum Weight per Axle) (lbs / kg)
Weight on Drivers (lbs / kg)14,892 / 6755
Engine Weight (lbs / kg)19,180 / 8700
Tender Loaded Weight (lbs / kg)
Total Engine and Tender Weight (lbs / kg)
Tender Water Capacity (gals / ML)422 / 1.60
Tender Fuel Capacity (oil/coal) (gals/tons / Liters/MT) 0.70 / 1
Minimum weight of rail (calculated) (lb/yd / kg/m)12 / 6
Geometry Relating to Tractive Effort
Driver Diameter (in / mm)23.60 / 600
Boiler Pressure (psi / kPa)145 / 10
High Pressure Cylinders (dia x stroke) (in / mm)6.89" x 11.81" / 175x300
Tractive Effort (lbs / kg)2928 / 1328.12
Factor of Adhesion (Weight on Drivers/Tractive Effort) 5.09
Heating Ability
Tubes (number - dia) (in / mm)69 - 1.614" / 41
Flues (number - dia) (in / mm)
Flue/Tube length (ft / m) 4.27 / 1.30
Firebox Area (sq ft / m2)18.29 / 1.70
Grate Area (sq ft / m2) 3.12 / 0.29
Evaporative Heating Surface (sq ft / m2)142 / 13.20
Superheating Surface (sq ft / m2)
Combined Heating Surface (sq ft / m2)142 / 13.20
Evaporative Heating Surface/Cylinder Volume278.63
Computations Relating to Power Output (More Information)
Robert LeMassena's Power Computation452
Same as above plus superheater percentage452
Same as above but substitute firebox area for grate area2652
Power L12613
Power MT773.66

All material Copyright © SteamLocomotive.com
Wes Barris