Data from Baldwin Locomotive Works Specification for Engines as digitized by the DeGolyer Library of Southern Methodist University, Vol 71, pp. 432+. Works numbers was 57212 in September 1923.
Not long after the 4 arrived as a saturated-boiler logging Prairie saddle tank, this superheated version joined the WTC. According to Gene Connelly's Baldwin production list, the 3 was originally intended for the West End Coal Company as their 41, then diverted to the WTC. Like the 4, the 3 was renumbered when the Schafer Brothers Lumber Company bought the WTC in 1928 as the 9 and later renumbered 29.
Data from Baldwin Locomotive Works Specification for Engines as digitized by the DeGolyer Library of Southern Methodist University Volume 71, p. 428+. Works number was 55913 in December 1922.
The WTC was based in Hoquiam, Wash and exploited timber reserves along the Wynooche River. This typical oil-burning logging Prairie saddle tank rolled along a typical logging road that featured 6-7% grades and ultra-tight 40 degrees. The 4 spent only a short time wearing the WTC's herald before the company was sold to Shafer Brothers Logging Company. When the latter took over, they renumbered the 4 as their #8. It was later renumbered 28 and remained in service into the 1950s.
| Principal Dimensions by Steve Llanso of Middle Run Media | ||
|---|---|---|
| Class | 3 | 4 |
| Locobase ID | 15244 | 15243 |
| Railroad | Wynooche Timber Company | Wynooche Timber Company |
| Country | USA | USA |
| Whyte | 2-6-2ST | 2-6-2ST |
| Number in Class | 1 | 1 |
| Road Numbers | 3 | 4 |
| Gauge | Std | Std |
| Number Built | 1 | 1 |
| Builder | Baldwin | Baldwin |
| Year | 1923 | 1922 |
| Valve Gear | Walschaert | Stephenson |
| Locomotive Length and Weight | ||
| Driver Wheelbase (ft / m) | 9 / 2.74 | 10 / 3.05 |
| Engine Wheelbase (ft / m) | 24.42 / 7.44 | 25.75 / 7.85 |
| Ratio of driving wheelbase to overall engine wheelbase | 0.37 | 0.39 |
| Overall Wheelbase (engine & tender) (ft / m) | 24.42 / 7.44 | 25.75 / 7.85 |
| Axle Loading (Maximum Weight per Axle) (lbs / kg) | ||
| Weight on Drivers (lbs / kg) | 115,500 / 52,390 | 96,000 / 43,545 |
| Engine Weight (lbs / kg) | 154,000 / 69,853 | 123,000 / 55,792 |
| Tender Loaded Weight (lbs / kg) | ||
| Total Engine and Tender Weight (lbs / kg) | ||
| Tender Water Capacity (gals / ML) | 2500 / 9.47 | 1600 / 6.06 |
| Tender Fuel Capacity (oil/coal) (gals/tons / Liters/MT) | 900 / 3407 | 600 / 2271 |
| Minimum weight of rail (calculated) (lb/yd / kg/m) | 64 / 32 | 53 / 26.50 |
| Geometry Relating to Tractive Effort | ||
| Driver Diameter (in / mm) | 44 / 1118 | 44 / 1118 |
| Boiler Pressure (psi / kPa) | 175 / 1210 | 165 / 1140 |
| High Pressure Cylinders (dia x stroke) (in / mm) | 18" x 24" / 457x610 | 17" x 24" / 432x610 |
| Tractive Effort (lbs / kg) | 26,288 / 11924.05 | 22,109 / 10028.49 |
| Factor of Adhesion (Weight on Drivers/Tractive Effort) | 4.39 | 4.34 |
| Heating Ability | ||
| Tubes (number - dia) (in / mm) | 130 - 2" / 51 | 152 - 2" / 51 |
| Flues (number - dia) (in / mm) | 20 - 5.375" / 137 | |
| Flue/Tube length (ft / m) | 10.42 / 3.18 | 13.54 / 4.13 |
| Firebox Area (sq ft / m2) | 109 / 10.13 | 80 / 7.43 |
| Grate Area (sq ft / m2) | 22 / 2.04 | 14.40 / 1.34 |
| Evaporative Heating Surface (sq ft / m2) | 1103 / 102.51 | 1151 / 106.97 |
| Superheating Surface (sq ft / m2) | 228 / 21.19 | |
| Combined Heating Surface (sq ft / m2) | 1331 / 123.70 | 1151 / 106.97 |
| Evaporative Heating Surface/Cylinder Volume | 156.01 | 182.41 |
| Computations Relating to Power Output (More Information) | ||
| Robert LeMassena's Power Computation | 3850 | 2376 |
| Same as above plus superheater percentage | 4505 | 2376 |
| Same as above but substitute firebox area for grate area | 22,318 | 13,200 |
| Power L1 | 6716 | 2974 |
| Power MT | 384.58 | 204.89 |