VR 2-8-2 Locomotives in Finland


Class Details by Steve Llanso of Sweat House Media

Class Pr1/Paikku (Locobase 4225)

Data from Markku Karvonen's personal.inet.fi/koti/markku.karvonen/prk/vanha3.htm (visited 29 March 2003). (Adhesion weight data from [external link] ...).

eight

This small class of Mikado tanks was delivered over a three-year period by Hannoversche Maschinenbau of Germany (the first 8 - 761-768) and the two Tampere builders -- Tampere Pellava-ja Rautateollisuus OY (Tampella) supplying just the 769 and 770 in 1926 and Lokomo OY adding the last 6 (771-776) in 1925-1926.


Class Tr1/Risto (Locobase 4218)

Sharing the same boiler as the equally successful Hr1 Pacifics, these Mikes had a similar building history. From 1937 to 1957, three different builders supplied this reliable design

Markku Karvonen's site shows that Tampere Pellava-ja Rautateollisuus OY (Tampella) of Tampere supplied 1030-1054, 1089-1096

Lokomo OY also of Tampere produced 1055-1060 and 1081-1088 in 1953-1955.

Arnold Jung of Jungenthal in Germany contributed one batch of 20 (1061-1080) in 1953.

Photographs in Ziel and Eagleson (1973) show the Tr1s to have had slender, tapered main and side rods and spoked drivers like the Hr1s, but their "elephant-ear" smoke lifters were much bigger. The steam dome and sandbox were gathered into one long casing (to keep the sand from freezing may have been one reason) and the engine crew benefited from a vestibule cab. Like the Hr1s, these modern engines saw out steam on the VR.

Data from Markku Karvonen's personal.inet.fi/koti/markku.karvonen/prk/vanha3.htm (visited 29 March 2003). (Adhesion weight data from [external link] ...)...


Class Vk5 (Locobase 5642)

Data from Markku Karvonen's personal.inet.fi/koti/markku.karvonen/prk/vanha3.htm (visited 29 March 2003). A pair of Mikado tanks for light duty. Although small, they were superheated and hence reasonably powerful. At least one ran until 1962.

Principal Dimensions by Steve Llanso of Sweat House Media
ClassPr1/PaikkuTr1/RistoVk5
Locobase ID4225 4218 5642
RailroadVRVRVR
CountryFinlandFinlandFinland
Whyte2-8-2T2-8-22-8-2T
Number in Class16672
Road Numbers761-7761030-109672-73
Gauge5'5'5'
Number Built16672
BuilderseveralseveralTampella
Year192419401913
Valve GearWalschaertWalschaertWalschaert
Locomotive Length and Weight
Driver Wheelbase (ft / m)
Engine Wheelbase (ft / m)25.66 / 7.82
Ratio of driving wheelbase to overall engine wheebase
Overall Wheelbase (engine & tender) (ft / m)25.66 / 7.82
Axle Loading (Maximum Weight per Axle) (lbs / kg)33,510 / 15,20017,637 / 8000
Weight on Drivers (lbs / kg)130,073 / 59,000149,915 / 68,00070,548 / 32,000
Tender Loaded Weight (lbs / kg)
Total Engine and Tender Weight (lbs / kg)194,44799,208
Tender Water Capacity (gals / ML)1426 / 5.40
Tender Fuel Capacity (oil/coal) (gals/tons / ML/MT)
Minimum weight of rail (calculated) (lb/yd / kg/m)54 / 2762 / 3129 / 14.50
Geometry Relating to Tractive Effort
Driver Diameter (in / mm)63 / 160063 / 160044.10 / 1120
Boiler Pressure (psi / kPa)174 / 12217.60 / 15142.10 / 9.80
High Pressure Cylinders (dia x stroke) (in / mm)22.44" x 25.59" / 570x65024.02" x 27.56" / 610x70016.93" x 20.08" / 430x510
Tractive Effort (lbs / kg)30,251 / 13721.6446,683 / 21175.0815,763 / 7149.99
Factor of Adhesion (Weight on Drivers/Tractive Effort) 4.30 3.21 4.48
Heating Ability
Firebox Area (sq ft / m2)
Grate Area (sq ft / m2)22.70 / 2.1138.09 / 3.5415.18 / 1.41
Evaporative Heating Surface (sq ft / m2)1313 / 122.032103 / 195.45869 / 80.70
Superheating Surface (sq ft / m2)409 / 38.01732 / 68.03196 / 18.20
Combined Heating Surface (sq ft / m2)1722 / 160.042835 / 263.481065 / 98.90
Evaporative Heating Surface/Cylinder Volume112.09145.49166.10
Computations Relating to Power Output (More Information)
Robert LeMassena's Power Computation395082882157
Same as above plus superheater percentage489810,4432545
Same as above but substitute firebox area for grate area
Power L1
Power MT

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