Nahma & Northern / Nevada Northern / Newton & Northwestern 4-6-0 "Ten-Wheeler" Locomotives in the USA


Class Details by Steve Llanso of Sweat House Media

Class 10 (Locobase 16293)

Data from "Newton & Northwestern 4-6-0", Railway and Locomotive Engineering, Volume 18, No. 12 (December 1905), p. 550. Works numbers were 29786-29787 in June 1904..

This pair of relatively small Ten-wheelers had narrow, deep fireboxes offering considerable heating surface area behind high-mounted boilers. Their cylinders took steam from the boiler through 11" (279 mm) piston valves.

In 1906, the 100-mile long N&NW was bought by the Fort Dodge, Des Moines & Southern. The FDDM&S sold the two engines to the Chicago Iron Works. Apparently, the CIW sold the 12 directly to the Kettle Valley in 1913 as their 4, but sold the 10 to locomotive rebuilder/reseller Birmingham Rail & Locomotive, which sold it to the KV in October 1912.

The 4 went on to the Louisiana & North Western as their 27 in November 1921. The L&NW sold the 27 to locomotive rebuilder/reseller Southern Iron & Equipment in February 1926.


Class 4 (Locobase 12928)

Data from Baldwin Locomotive Works Specification for Engines as digitized by the DeGolyer Library of Southern Methodist University Vol 28, p. 253. See also Charlie & Laurie MacIntosh's Nahma Inn web page at http://www.nahmainn.com/History.php . Works number was 29721 in December 1906.

The buyer was credited as Bay De Noquet Lumber Company, which reflects the railroad's geographical location in Michigan's Upper Peninsula. Nahma (pronounced NAY-muh) sits on the south-facing bay near the head of Lake Michigan. The 4 made up part of the N & N's roster after the railroad began exploiting hardwood forests to the North. Ultimately, the N & N (aka the Whiskey Northern) encompassed 75 miles of track. Logging continued for almost 50 years before the railroad was abandoned in 1948.


Class R E Noble (Locobase 13685)

Data from Baldwin Locomotive Works Specification for Engines as digitized by the DeGolyer Library of Southern Methodist University Volume 35, p.144. Works number was 34942 in July 1910.

This surprisingly high-drivered Ten-wheeler was bought by American Smelters Company for $13,139. After 30 years of service, the engine was retired in 1941.

In 1956, the NN revived the 40 to conduct railfan trips. In 1986, the NN donated the 40 to the State of Nevada in September 1986. The Nevada Northern Railway Museum operated the engine for a while, but ran into boiler life issues in 2001. [], last accessed on 7 January 2012, narrates the long-running effort to restore the 40 to service. The work resulted in the "Ghost Train of Ely" returning to service in 2005.

Taken out of service in 2008 because of suspected cracks in the axles, the 40 sat cold until later analysis determined that the axles did not have actual cracks and thus could be operated safely. At the time of the 40's reappearance on the operational roster, however, the Museum understood that a $425,000-450,000 kitty needed to be assembled to completely overhaul the running gear. (See the director's 23 September 2009 At the Throttle presented at [])

Principal Dimensions by Steve Llanso of Sweat House Media
Class104R E Noble
Locobase ID16,293 12,928 13,685
RailroadNewton & NorthwesternNahma & NorthernNevada Northern
CountryUSAUSAUSA
Whyte4-6-04-6-04-6-0
Number in Class211
Road Numbers10, 12440
GaugeStdStdStd
Number Built211
BuilderAlco-SchenectadyBurnham, Williams & CoBaldwin
Year190419061910
Valve GearStephensonStephensonBaker
Locomotive Length and Weight
Driver Wheelbase (ft / m)14.33 / 4.3710.50 / 3.2013.33 / 4.06
Engine Wheelbase (ft / m)25.33 / 7.7218.42 / 5.6124.50 / 7.47
Ratio of driving wheelbase to overall engine wheebase 0.57 0.57 0.54
Overall Wheelbase (engine & tender) (ft / m)50.40 / 15.3650.58 / 15.42
Axle Loading (Maximum Weight per Axle) (lbs / kg)
Weight on Drivers (lbs / kg)103,500 / 46,94776,000 / 34,473102,500 / 46,493
Engine Weight (lbs / kg)140,500 / 63,73088,000 / 39,916137,400 / 62,324
Tender Loaded Weight (lbs / kg)85,500 / 38,78260,000 / 27,216120,000 / 54,431
Total Engine and Tender Weight (lbs / kg)226,000 / 102,512148,000 / 67,132257,400 / 116,755
Tender Water Capacity (gals / ML)4000 / 13.263000 / 11.366000 / 22.73
Tender Fuel Capacity (oil/coal) (gals/tons / ML/MT)810 / 9.10
Minimum weight of rail (calculated) (lb/yd / kg/m)58 / 2942 / 2157 / 28.50
Geometry Relating to Tractive Effort
Driver Diameter (in / mm)62 / 157550 / 127069 / 1753
Boiler Pressure (psi / kPa)190 / 13.10180 / 12.40200 / 13.80
High Pressure Cylinders (dia x stroke) (in / mm)19" x 26" / 483x66016" x 24" / 406x61019" x 26" / 483x660
Tractive Effort (lbs / kg)24,449 / 11089.8918,801 / 8528.0023,125 / 10489.34
Factor of Adhesion (Weight on Drivers/Tractive Effort) 4.23 4.04 4.43
Heating Ability
Firebox Area (sq ft / m2)142.90 / 13.2892 / 8.55145 / 13.47
Grate Area (sq ft / m2)25 / 2.3220 / 1.8629.30 / 2.72
Evaporative Heating Surface (sq ft / m2)1986 / 184.501222 / 113.572048 / 190.26
Superheating Surface (sq ft / m2)
Combined Heating Surface (sq ft / m2)1986 / 184.501222 / 113.572048 / 190.26
Evaporative Heating Surface/Cylinder Volume232.77218.80240.03
Computations Relating to Power Output (More Information)
Robert LeMassena's Power Computation475036005860
Same as above plus superheater percentage475036005860
Same as above but substitute firebox area for grate area27,15116,56029,000
Power L1621445177475
Power MT397.09393.09482.33

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