Wiener (1930) singles out the design, saying "They deserve far more than a mere passing mention, because they were so well thought out and designed that the type has remained unchanged until this [1930] day, except for the adoption of ...superheaters and arch tubes ...which tend to increase efficiency or to reduce maintenance costs." At some point the balloon stack was replaced by a straight pipe.
http://web3.foxinternet.net/sarek/mallets tells us that Booth Lumber #2 carried on until 1945 and was scrapped a year later in Wendling, Oregon.
| Specifications | |
|---|---|
| Class | 2 |
| Locobase ID | 3644 |
| Railroad | Booth-Kelly |
| Whyte | 2-6-6-2T |
| Road Numbers | 2 |
| Gauge | Std |
| Builder | Baldwin |
| Year | 1910 |
| Valve Gear | Walschaert |
| Locomotive Length and Weight | |
| Driver Wheelbase | 8' |
| Engine Wheelbase | 23.59' |
| 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 | 177072 lbs |
| Engine Weight | 206080 lbs |
| Tender Light Weight | |
| Total Engine and Tender Weight | 206080 lbs |
| Tender Water Capacity | 1670 gals |
| Tender Fuel Capacity (oil/coal) | 8.8 tons |
| Minimum weight per yard of rail on which locomotive could run | 49.19 lb rail |
| Geometry Relating to Tractive Effort | |
| Driver Diameter | 44.50" |
| Boiler Pressure | 200 psi |
| Cylinders (dia x stroke) | 17" x 24" |
| Low Pressure Cylinders (dia x stroke) | 24.75" x 24" |
| Tractive Effort | 36007 lbs |
| Factor of Adhesion (Weight on Drivers/Tractive Effort) | 4.92 |
| Heating Ability | |
| Firebox Area | 132 sq. ft |
| Grate Area | 29 sq. ft |
| Evaporative Heating Surface | 2082 |
| Superheating Surface | |
| Combined Heating Surface | 2082 |
| Evaporative Heating Surface/Cylinder Volume | 330.21 |
| Computations Relating to Power Output (More Information) | |
| Robert LeMassena's Power Computation | 5800 |
| Same as above plus superheater percentage | 5800 |
| Same as above but substitute firebox area for grate area | 26400 |
| Power L1 | 3043.47 |
| Power MT | 227.35 |
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