This is one of the most unusual locomotives in Locobase, a Meyer engine with Vauclain-compound cylinders. The former carried two engine sets under a single boiler with the cylinders facing to the rear in each set. Powering each set of drivers (two per side) was a unit of 1 HP and 1 LP cylinder, both fed by a single valve. (The only other 8-cylinder locomotive in Locobase is a Garratt operated by a Tasmanian railway.)
Designed specifically for logging operations, it quickly became redundant when the Sinnemahoning was almalgamated with 3 other logging roads to form the Buffalo and Susquehanna. Although it was given the #103, the B & S very soon returned the engine to Baldwin, which scrapped it.
| Specifications | |
|---|---|
| Class | Edward T Johnson |
| Locobase ID | 5310 |
| Railroad | Sinnemahoning Valley |
| Whyte | 0-6-6-0T |
| Road Numbers | 3 |
| Gauge | Std |
| Builder | Burnham, Williams & Co |
| Year | 1892 |
| Valve Gear | |
| Locomotive Length and Weight | |
| Driver Wheelbase | |
| Engine Wheelbase | |
| Ratio of driving wheelbase to overall engine wheebase | |
| Overall Wheelbase (engine & tender) | |
| Axle Loading (Maximum Weight per Axle) | |
| Weight on Drivers | 148000 lbs |
| Engine Weight | 148000 lbs |
| Tender Light Weight | |
| Total Engine and Tender Weight | 148000 lbs |
| Tender Water Capacity | 2500 gals |
| Tender Fuel Capacity (oil/coal) | 4 tons |
| Minimum weight per yard of rail on which locomotive could run | 41 lb rail |
| Geometry Relating to Tractive Effort | |
| Driver Diameter | 40" |
| Boiler Pressure | 180 psi |
| Cylinders (dia x stroke) | 9.5" x 18" (4) |
| Low Pressure Cylinders (dia x stroke) | 16" x 18" |
| Tractive Effort | 18376 lbs |
| Factor of Adhesion (Weight on Drivers/Tractive Effort) | 8.05 |
| Heating Ability | |
| Firebox Area | |
| Grate Area | 22 sq. ft |
| Evaporative Heating Surface | |
| Superheating Surface | |
| Combined Heating Surface | 0 |
| Evaporative Heating Surface/Cylinder Volume | |
| Computations Relating to Power Output (More Information) | |
| Robert LeMassena's Power Computation | 3960 |
| Same as above plus superheater percentage | 3960 |
| Same as above but substitute firebox area for grate area | 0 |
| Power L1 | 0 |
| Power MT | 0 |
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