The design was rated at 200 tons up a 2 1/2% grade (1 in 40). According to the December 1967 Industrial Railway Record (No 15), two significant design limitations were the requirement to negotiate 160-ft radius curves and the light, 56-lb/yard track.
As the logging locomotive website's summary of service shows, this little Atlantic mallet covered most of the United States timber harvesting regions during its long life.
1909 - 1909: Little River Railroad #126. Townsend, TN. ironhorse129 explains that the 126 was too long for the Little River's tight curves and it was quickly returned to Baldwin
1910 - 1920: Columbia River Belt Line Railroad "Skookum." Blind Slough, OR
1920 - 1924: Carlisle-Pennell Lumber Co #7. Onalaska, WA
1924 v 1930: Transferred to Carlisle subsidiary Newaukum Valley Railroad Co #7. Onalaska, WA.
1930/1931: Leased to Mud Bay Logging Co. #7, Olympia, WA
1931 - 1933: Carlisle Lumber Company #7. Onalaska, WA.
1933 v 1955: Deep River Logging Co. #7, Deep River, WA
Disposition after logging service:
1956: Sold to Charles Morrow, dismantled and moved in 1960 to Snoqualmie, WA
1980: to Rogan Coombs, Garberville, CA.
1990: Moved to Mineral, WA for storage at Mt. Rainier Scenic Railroad
| Specifications | |
|---|---|
| Class | Skookum |
| Locobase ID | 4069 |
| Railroad | Columbia River Belt Line |
| Whyte | 2-4-4-2 |
| Road Numbers | |
| Gauge | Std |
| Builder | Baldwin |
| Year | 1909 |
| Valve Gear | Walschaert |
| Locomotive Length and Weight | |
| Driver Wheelbase | 5.33' |
| Engine Wheelbase | 33' |
| Ratio of driving wheelbase to overall engine wheebase | 0.16 |
| Overall Wheelbase (engine & tender) | |
| Axle Loading (Maximum Weight per Axle) | |
| Weight on Drivers | 129850 lbs |
| Engine Weight | 162650 lbs |
| Tender Light Weight | 80350 lbs |
| Total Engine and Tender Weight | 243000 lbs |
| Tender Water Capacity | 4000 gals |
| Tender Fuel Capacity (oil/coal) | 1500 gals |
| Minimum weight per yard of rail on which locomotive could run | 54 lb rail |
| Geometry Relating to Tractive Effort | |
| Driver Diameter | 48" |
| Boiler Pressure | 200 psi |
| Cylinders (dia x stroke) | 15" x 22" |
| Low Pressure Cylinders (dia x stroke) | 23" x 22" |
| Tractive Effort | 24600 lbs |
| Factor of Adhesion (Weight on Drivers/Tractive Effort) | 5.28 |
| Heating Ability | |
| Firebox Area | 106 sq. ft |
| Grate Area | 28.20 sq. ft |
| Evaporative Heating Surface | 1959 |
| Superheating Surface | |
| Combined Heating Surface | 1959 |
| Evaporative Heating Surface/Cylinder Volume | 435.36 |
| Computations Relating to Power Output (More Information) | |
| Robert LeMassena's Power Computation | 5640 |
| Same as above plus superheater percentage | 5640 |
| Same as above but substitute firebox area for grate area | 21200 |
| Power L1 | 3764 |
| Power MT | 255.62 |
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