http://web3.foxinternet.net/sarek/mallets shows that this Prairie Mallet Tank operated for Weyerhaeuser from 1928 to 1954 first from Longview, Wash., then from 1937 out of Vail, Wash. Rayonier, Inc of Railroad Camp, Wash., then ran the locomotive as a tender engine until 1968. After years of storage, enthusiasts at the Black Hills Central began restoring 110 in 1999. Its first revenue run came on 12 May 2001.
www.rypn.org/Articles/010901BlackHills has an extended article on the 110's history. Created specifically to serve logging roads, the split-saddle tank Mallet handled the rough track and steep (4-8%) grades as well as a Shay, but was easier to maintain. And so flexible was the layout that 40-deg curves were well within the engine's turning radius. The Baldwin logging engines were a big hit with their crews because they were "clean" engines (oil-fired and superheated), unlike the older engines that threw water, soot and "other gunk" out of the stack.
| Specifications | |
|---|---|
| Class | |
| Locobase ID | 3643 |
| Railroad | Weyerhaeuser Timber |
| Whyte | 2-6-6-2T |
| Road Numbers | 110/1 |
| Gauge | Std |
| Builder | Baldwin |
| Year | 1928 |
| Valve Gear | Walschaert |
| Locomotive Length and Weight | |
| Driver Wheelbase | 8' |
| Engine Wheelbase | 23.67' |
| Ratio of driving wheelbase to overall engine wheebase | 0.34 |
| Overall Wheelbase (engine & tender) | 37.75' |
| Axle Loading (Maximum Weight per Axle) | |
| Weight on Drivers | 187264 lbs |
| Engine Weight | 220000 lbs |
| Tender Light Weight | |
| Total Engine and Tender Weight | 220000 lbs |
| Tender Water Capacity | |
| Tender Fuel Capacity (oil/coal) | |
| Minimum weight per yard of rail on which locomotive could run | 52.02 lb rail |
| Geometry Relating to Tractive Effort | |
| Driver Diameter | 44" |
| Boiler Pressure | 200 psi |
| Cylinders (dia x stroke) | 17" x 24" |
| Low Pressure Cylinders (dia x stroke) | 26" x 24" |
| Tractive Effort | 37545 lbs |
| Factor of Adhesion (Weight on Drivers/Tractive Effort) | 4.99 |
| Heating Ability | |
| Firebox Area | 128 sq. ft |
| Grate Area | 26.20 sq. ft |
| Evaporative Heating Surface | 1654 |
| Superheating Surface | 346 |
| Combined Heating Surface | 2000 |
| Evaporative Heating Surface/Cylinder Volume | 262.33 |
| Computations Relating to Power Output (More Information) | |
| Robert LeMassena's Power Computation | 5240 |
| Same as above plus superheater percentage | 6146.52 |
| Same as above but substitute firebox area for grate area | 30028.80 |
| Power L1 | 5378.16 |
| Power MT | 379.90 |
| This page last modified: . | [Contact] | All material © 1999-2008 SteamLocomotive.com |