Washington County 4-6-0 "Ten-Wheeler" Type Locomotives

Class 4 (Locobase 2983)

Data from 1899 Brooks catalogue.

Builder info from B.Rumary, 25 Kingscombe, Gurney Slade, Radstock, BA3 4TH, ENGLAND and Jeremy Lambert as supplied by Allen Stanley in March 2004. Works #2943-2947, produced in April 1898.

See Locobase 2151 for a short history of this Maine shortline.

In the same month as the three 4-4-0s (1-3) were produced for the WCRR, this quintet of Ten-wheelers also came to life. They apparently shared the same firebox and had the same number of fire tubes as the Americans, which they immediately preceded on Brooks' Dunkirk factory floor.

Unlike the 4-4-0s, however, three of these freight locomotives served Maine for almost 40 years and one fell just short of 50 years.

Road # Year Changed to new # MEC Scrapped

4 31 in Aug 1906 110 Nov 1918

5 32 in April 1906 112 Mar 1935

6 33 in Mar 1906 113 Feb 1935

7 34 in April 1905 114 June 1947

8 35 in April 1907 115 Aug 1935

Specifications
Class4
Locobase ID2983
RailroadWashington County (MEC)
Whyte4-6-0
Road Numbers4-8 / 31-35 / 110, 112-15
GaugeStd
BuilderBrooks
Year1898
Valve GearStephenson
Locomotive Length and Weight
Driver Wheelbase13.50'
Engine Wheelbase23.33'
Ratio of driving wheelbase to overall engine wheebase 0.58
Overall Wheelbase (engine & tender)50.09'
Axle Loading (Maximum Weight per Axle)
Weight on Drivers94400 lbs
Engine Weight118800 lbs
Tender Light Weight84000 lbs
Total Engine and Tender Weight202800 lbs
Tender Water Capacity4000 gals
Tender Fuel Capacity (oil/coal)8.5 tons
Minimum weight per yard of rail on which locomotive could run52.44 lb rail
Geometry Relating to Tractive Effort
Driver Diameter56"
Boiler Pressure180 psi
Cylinders (dia x stroke)18" x 24"
Tractive Effort21245 lbs
Factor of Adhesion (Weight on Drivers/Tractive Effort) 4.44
Heating Ability
Firebox Area134 sq. ft
Grate Area21.80 sq. ft
Evaporative Heating Surface1608
Superheating Surface
Combined Heating Surface1608
Evaporative Heating Surface/Cylinder Volume227.49
Computations Relating to Power Output (More Information)
Robert LeMassena's Power Computation3924
Same as above plus superheater percentage3924
Same as above but substitute firebox area for grate area24120
Power L15414.15
Power MT379.33

Credits

Introduction and specifications provided by Steve Llanso of Sweat House Media.