Data from:
Svein Sando's Railway Site [] (9 June 2004) --(Later link: The Semaphore, accessed for link update 10 July 2022.)--and the Jernbane (Iron Road) site [] (June 2004).
Identical to the 1867 Class 4 design except for a higher boiler pressure. Like the Class 4, these were converted to Moguls at some point after delivery. The last of the class was withdrawn in 1923.
Data from:
Svein Sando's Railway Site [] (9 June 2004)--(Later link: The Semaphore, accessed for link update 10 July 2022.)-- and the Jernbane (Iron Road) site http://jernbane.net (June 2004).
These six-coupled tanks were built as single entries in 1907 and 1911 (both by Hamar). After a long break, five were delivered in 1923 (works #319-323) from Thune, and seven more from Hamar & Thune in 1924. Locobase is not sure which engines were 23a and which were 23b. Given the long gap between the first two and the last 12, however, we lean toward taking the 1920s locomotives into the 12b classification. The data represent that version. (23a had 400-mm/15.75" diameter cylinders and smaller water tankage and coal bunkerage.)
Four of the locomotives shared a common retirement date: 442, 454, 457, and 460 all were withdrawn on 9 November 1970.
Data from:
Svein Sando's Railway Site [] (9 June 2004)--(Later link: The Semaphore, accessed for link update 10 July 2022.)--and the Jernbane (Iron Road) site http://jernbane.net (June 2004).
This single six-coupled tank was originally purchased by the Aktieselskabet Sydvaranger in Kirkenes. As such locomotives went in Norway, this was a large engine both in power and in weight.
When the NSB took 410 over, it was first based in Narvik, later in Oslo. Retirement came on 10 November 1954.
Data from:
Svein Sando's Railway Site [] (9 June 2004)--(Later link: The Semaphore, accessed for link update 10 July 2022.)--and the Jernbane (Iron Road) site [] (June 2004).
The first freight locomotive (B,P works #812), very similar to the 2-4-0 that arrived two years later. Sando's table doesn't say for sure, but it appears that the 4a is this locomotive reconstructed as a 2-6-0.
Principal Dimensions by Steve Llanso of Middle Run Media | ||||
---|---|---|---|---|
Class | Class 10/10a (2-6-0) | Class 23a/23b | Class 36 | Class 4/4a (2-6-0) |
Locobase ID | 6105 | 6166 | 6179 | 6102 |
Railroad | NSB | NSB | NSB | NSB |
Country | Norway | Norway | Norway | Norway |
Whyte | 0-6-0 | 0-6-0T | 0-6-0T | 0-6-0 |
Number in Class | 4 | 14 | 1 | 1 |
Road Numbers | 49-52 | 159, 165, 439-43, 454-60 | 410 | 20 |
Gauge | Std | Std | Std | Std |
Number Built | 4 | 14 | 1 | 1 |
Builder | Nydqvist & Holm (NOHAB) | several | Hanomag | Beyer, Peacock |
Year | 1877 | 1907 | 1917 | 1867 |
Valve Gear | Stephenson | Stephenson | Heusinger | Stephenson |
Locomotive Length and Weight | ||||
Driver Wheelbase (ft / m) | 9.84 / 3 | |||
Engine Wheelbase (ft / m) | 9.84 / 3 | |||
Ratio of driving wheelbase to overall engine wheelbase | 1 | |||
Overall Wheelbase (engine & tender) (ft / m) | 37.02 / 11.28 | 9.84 / 3 | 32.36 / 9.86 | |
Axle Loading (Maximum Weight per Axle) (lbs / kg) | ||||
Weight on Drivers (lbs / kg) | 63,714 / 28,900 | 86,201 / 39,100 | 95,901 / 43,500 | 63,714 / 28,900 |
Engine Weight (lbs / kg) | 63,714 / 28,900 | 86,201 / 39,100 | 95,901 / 43,500 | 63,714 / 28,900 |
Tender Loaded Weight (lbs / kg) | ||||
Total Engine and Tender Weight (lbs / kg) | 86,201 / 39,100 | 95,901 / 43,500 | ||
Tender Water Capacity (gals / ML) | 1056 / 4 | 1135 / 4.30 | ||
Tender Fuel Capacity (oil/coal) (gals/tons / Liters/MT) | 3.30 / 3 | 1.40 / 1 | 1.30 / 1 | 3.30 / 3 |
Minimum weight of rail (calculated) (lb/yd / kg/m) | 35 / 17.50 | 48 / 24 | 53 / 26.50 | 35 / 17.50 |
Geometry Relating to Tractive Effort | ||||
Driver Diameter (in / mm) | 57 / 1448 | 49.20 / 1250 | 43.30 / 1100 | 57 / 1448 |
Boiler Pressure (psi / kPa) | 142.10 / 980 | 174 / 1200 | 188.50 / 1300 | 121.80 / 840 |
High Pressure Cylinders (dia x stroke) (in / mm) | 16" x 22" / 406x560 | 15.75" x 21.65" / 400x550 | 16.93" x 21.65" / 430x550 | 16" x 22" / 406x560 |
Tractive Effort (lbs / kg) | 11,934 / 5413.18 | 16,144 / 7322.80 | 22,962 / 10415.40 | 10,229 / 4639.80 |
Factor of Adhesion (Weight on Drivers/Tractive Effort) | 5.34 | 5.34 | 4.18 | 6.23 |
Heating Ability | ||||
Tubes (number - dia) (in / mm) | ||||
Flues (number - dia) (in / mm) | ||||
Flue/Tube length (ft / m) | ||||
Firebox Area (sq ft / m2) | ||||
Grate Area (sq ft / m2) | 14 / 1.30 | 13.56 / 1.26 | 14.53 / 1.35 | 14 / 1.30 |
Evaporative Heating Surface (sq ft / m2) | 759 / 70.50 | 837 / 77.80 | 1067 / 99.20 | 759 / 70.50 |
Superheating Surface (sq ft / m2) | ||||
Combined Heating Surface (sq ft / m2) | 759 / 70.50 | 837 / 77.80 | 1067 / 99.20 | 759 / 70.50 |
Evaporative Heating Surface/Cylinder Volume | 148.25 | 171.45 | 189.15 | 148.25 |
Computations Relating to Power Output (More Information) | ||||
Robert LeMassena's Power Computation | 1989 | 2359 | 2739 | 1705 |
Same as above plus superheater percentage | 1989 | 2359 | 2739 | 1705 |
Same as above but substitute firebox area for grate area | ||||
Power L1 | ||||
Power MT |