Jura-Bern-Luzern-Bahn 2-6-0 Locomotives in Switzerland


Class Details by Steve Llanso of Sweat House Media

Class Brunig (Locobase 20033)

Data from "Light Railway Locomotives in France [sic]", Scientific American Supplement, No 1300 (1 December 1900), p. 20835.


Class J.3 (Locobase 5416)

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); and Camille Barbey, Les Locomotives Suisses (Geneve: Ch. Eggimann & Cie, 1896), pp. 36, 108-111; , Railroad and Engineering Journal, Volume 63, No 12 (December 1889),

Data from December 1889 RREJ, which explains that this was a von-Borries compound design. The division of power between the two cylinders was equalized by differing the length of the eccentric arms of the two cylinders' link motions.

It was right around the time of the introduction of these locomotives that the JBL merged with the Western Switzerland & Simplon to form the Jura-Simplon. Only in 1898, however, did work begin on the mighty Simplon tunnel project.

Principal Dimensions by Steve Llanso of Middle Run Media

ClassBrunigJ.3
Locobase ID20033 5416
RailroadJura-Bern-Luzern-Bahn (JBL)Jura-Bern-Luzern-Bahn (JBL)
CountrySwitzerlandSwitzerland
Whyte2-6-0T2-6-0
Number in Class8
Road Numbers205, 208-222
GaugeMetreStd
Number Built8
BuilderSLM
Year18991889
Valve GearStephensonStephenson
Locomotive Length and Weight
Driver Wheelbase (ft / m) 8.20 / 2.50
Engine Wheelbase (ft / m) 8.20 / 2.5016.73 / 5.10
Ratio of driving wheelbase to overall engine wheelbase1
Overall Wheelbase (engine & tender) (ft / m) 8.20 / 2.50
Axle Loading (Maximum Weight per Axle) (lbs / kg)
Weight on Drivers (lbs / kg)23,369 / 10,60080,910 / 36,700
Engine Weight (lbs / kg)23,369 / 10,600149,143 / 67,650
Tender Loaded Weight (lbs / kg)47,399 / 21,500
Total Engine and Tender Weight (lbs / kg)23,369 / 10,600196,542 / 89,150
Tender Water Capacity (gals / ML)2112 / 8
Tender Fuel Capacity (oil/coal) (gals/tons / Liters/MT) 0.60 / 1 3.30 / 3
Minimum weight of rail (calculated) (lb/yd / kg/m)13 / 6.5045 / 22.50
Geometry Relating to Tractive Effort
Driver Diameter (in / mm)41.30 / 105059.80 / 1520
Boiler Pressure (psi / kPa)159.50 / 11203.10 / 14
High Pressure Cylinders (dia x stroke) (in / mm)12.6" x 18.7" / 320x47517.72" x 25.59" / 450x650 (1)
Low Pressure Cylinders (dia x stroke) (in / mm)25.2" x 25.59" / 640x650 (1)
Tractive Effort (lbs / kg)9746 / 4420.7215,522 / 7040.67
Factor of Adhesion (Weight on Drivers/Tractive Effort) 2.40 5.21
Heating Ability
Tubes (number - dia) (in / mm)118 - 1.772" / 45177 - 2.008" / 51
Flues (number - dia) (in / mm)
Flue/Tube length (ft / m) 9.84 / 313.45 / 4.10
Firebox Area (sq ft / m2)38.97 / 3.6280.73 / 7.50
Grate Area (sq ft / m2) 9.15 / 0.8516.15 / 1.50
Evaporative Heating Surface (sq ft / m2)607 / 56.401305 / 121.20
Superheating Surface (sq ft / m2)
Combined Heating Surface (sq ft / m2)607 / 56.401305 / 121.20
Evaporative Heating Surface/Cylinder Volume224.92357.33
Computations Relating to Power Output (More Information)
Robert LeMassena's Power Computation14593280
Same as above plus superheater percentage14593280
Same as above but substitute firebox area for grate area621616,396
Power L132624683
Power MT923.21382.80

All material Copyright © SteamLocomotive.com
Wes Barris