Most had a unit price of $16,598 with four costing $18,996 for some reason.
Railway Age offered a restrained assessment, saying that there was nothing unusual in the design, but it embodied "features which have proved satisfactory in service." The journal criticized the narrow firebox, noting the high 93:1 ratio of grate area to heating surface area.
Although delivered with slide valves, all but one of these first-for-the-railroad Consolidations were soon refitted with piston valves. Still later they were superheated. (See Locobase 3100 for the superheated version.)
Along with the 45 Alcos delivered in 1909, which were similar except for using Walschaert valve gear, these 2-8-0s carried on until the end of steam in some cases. (Some were retired as early as 1937.)
Alco assessed $15,331 per engine for the first 13; the latter 32 each cost $15,609.
Despite the Railway Age's 1907 critique of the Baldwin Consolidations (Locobase 5379), the WP ordered 45 more from Schenectady. In addition to a minor reduction in boiler tube count, the big difference from the earlier Eddystones was the adoption of an outside radial valve gear setup.
All received superheaters; see Locobase 3100.
Consolidations originally built as saturated, slide-valve locomotives (Locobases 7234 and 16310) that were later superheated and given 11" (279 mm) piston valves; it is this later modification that is shown in the specifications. Nineteen of the earlier batch from Baldwin (1906) had Stephenson gear, 211 small tubes, 15 sq ft (1.39 sq m), which raised its saturated evaporative heating surface area to 2,306 sq ft (214.
Superheating the locomotive didn't change the high ratio between the very large boiler and the relatively small grate. On the other hand, both subtypes achieved unusually high superheat ratios at a relatively low cost in deleted small tubes. Five of the 20 Baldwins remained coal burners; the other 15 were converted to oil burners and trailed tenders holding 3,556 US gallons (13,460 litres) of oil. All of the converted Alcos were oil burners hauling the 3,000 gallons shown in the specs..
With few exceptions, the superheated Consolidations served the WP through World War Two and retired in the late 1940s and early 1950s.
|Principal Dimensions by Steve Llanso of Sweat House Media|
|Class||C-43||C-43||C-43 - superheated|
|Railroad||Western Pacific (WP)||Western Pacific (WP)||Western Pacific (WP)|
|Number in Class||20||45||45|
|Builder||Burnham, Williams & Co||Alco-Schenectady||WP|
|Locomotive Length and Weight|
|Driver Wheelbase (ft / m)||15.67 / 4.78||15.67 / 4.78||15.67 / 4.78|
|Engine Wheelbase (ft / m)||24.33 / 7.42||24.33 / 7.42||24.33 / 7.42|
|Ratio of driving wheelbase to overall engine wheebase||0.64||0.64||0.64|
|Overall Wheelbase (engine & tender) (ft / m)||57.96 / 17.67||57.96 / 17.67||60 / 18.29|
|Axle Loading (Maximum Weight per Axle) (lbs / kg)||46,280 / 20,992|
|Weight on Drivers (lbs / kg)||186,330 / 84,518||184,000 / 83,461||185,000 / 83,915|
|Engine Weight (lbs / kg)||201,330 / 91,322||203,000 / 92,079||207,000 / 93,894|
|Tender Loaded Weight (lbs / kg)||183,000||155,000 / 70,307||157,000 / 71,214|
|Total Engine and Tender Weight (lbs / kg)||384,330||358,000 / 162,386||364,000 / 165,108|
|Tender Water Capacity (gals / ML)||8000 / 30.30||8000 / 30.30||8000 / 30.30|
|Tender Fuel Capacity (oil/coal) (gals/tons / ML/MT)||14 / 12.70||14 / 12.70||3000 / 11.40|
|Minimum weight of rail (calculated) (lb/yd / kg/m)||78 / 39||77 / 38.50||77 / 38.50|
|Geometry Relating to Tractive Effort|
|Driver Diameter (in / mm)||57 / 1448||57 / 1448||57 / 1448|
|Boiler Pressure (psi / kPa)||200 / 13.80||200 / 13.80||190 / 13.10|
|High Pressure Cylinders (dia x stroke) (in / mm)||22" x 30" / 559x762||22" x 30" / 559x762||22" x 30" / 559x762|
|Tractive Effort (lbs / kg)||43,305 / 19642.84||43,305 / 19642.84||41,140 / 18660.81|
|Factor of Adhesion (Weight on Drivers/Tractive Effort)||4.30||4.25||4.50|
|Firebox Area (sq ft / m2)||214 / 19.89||218 / 20.25||218 / 20.26|
|Grate Area (sq ft / m2)||33.60 / 3.12||33.60 / 3.12||33.60 / 3.12|
|Evaporative Heating Surface (sq ft / m2)||3141 / 291.91||3070 / 285.21||2292 / 213.01|
|Superheating Surface (sq ft / m2)||733 / 68.12|
|Combined Heating Surface (sq ft / m2)||3141 / 291.91||3070 / 285.21||3025 / 281.13|
|Evaporative Heating Surface/Cylinder Volume||237.97||232.59||173.65|
|Computations Relating to Power Output (More Information)|
|Robert LeMassena's Power Computation||6720||6720||6384|
|Same as above plus superheater percentage||6720||6720||7916|
|Same as above but substitute firebox area for grate area||42,800||43,600||51,361|