This was a younger sister of the Trojan (Locobase 4049) with a higher-pressure superheated boiler and LP cylinders 1" larger in diameter. HP cylinders used 8" (203 mm) piston valves, LP cylinders were served by 10" (254 mm) diameter valves.
Samson had a similar career to the CSF&E's #5, serving the Californian logging road until 1945. It too was scrapped in 1958.
The CSF & E was a logging road that was opened in Mendocino County in California in 1874 and became the CSF & E in 1903.
This small Mallet--the smallest to operate in American service--operated for 35 years on a road that had maximum grades of 6%, curves with radii as tight as 30 degrees, and rails weighing between 35-40 lb/yard (17.5-20 kg/metre). It was delivered in pieces and reassembled on the road. Soon after its delivery, a note dated 12/22/1911 said that Engineer Sissler had written in two letters (1/8 and 1/13) that he had bored out the HP cylinders from their original 13" diameter to the 13 17/32" shown in Locobase's specs and that the valve lap had been reduced from 7/8" to 13/16".
A strike in December 1945 closed the railroad and the sawmill. The sawmill reopened but the railroad was abandoned. After this enforced retirement in 1945, the Trojan languished until it was scrapped in 1958.
|Specifications by Steve Llanso of Sweat House Media|
|Railroad||Caspar, South Fork & Eastern||Caspar, South Fork & Eastern|
|Number in Class||1||1|
|Locomotive Length and Weight|
|Driver Wheelbase (ft)||6.83||20.50|
|Engine Wheelbase (ft)||20.50||32.50|
|Ratio of driving wheelbase to overall engine wheebase||0.33||0.63|
|Overall Wheelbase (engine & tender) (ft)||54.50|
|Axle Loading (Maximum Weight per Axle) (lbs)|
|Weight on Drivers (lbs)||108,000||104,000|
|Engine Weight (lbs)||129,000||122,000|
|Tender Loaded Weight (lbs)||66,000||80,000|
|Total Engine and Tender Weight (lbs)||195,000||202,000|
|Tender Water Capacity (gals)||3000||4000|
|Tender Fuel Capacity (oil/coal) (gals/tons)||1300||2000|
|Minimum weight of rail (calculated) (lb/yd)||30||29|
|Geometry Relating to Tractive Effort|
|Driver Diameter (in)||37||37|
|Boiler Pressure (psi)||220||200|
|High Pressure Cylinders (dia x stroke) (in)||13" x 20"||13.53" x 20"|
|Low Pressure Cylinders (dia x stroke) (in)||20" x 20"||19" x 20"|
|Tractive Effort (lbs)||24,018||22,324|
|Factor of Adhesion (Weight on Drivers/Tractive Effort)||4.50||4.66|
|Firebox Area (sq ft)||80||100|
|Grate Area (sq ft)||17.60||18.20|
|Evaporative Heating Surface (sq ft)||1016||1193|
|Superheating Surface (sq ft)||218|
|Combined Heating Surface (sq ft)||1234||1193|
|Evaporative Heating Surface/Cylinder Volume||330.67||358.46|
|Computations Relating to Power Output (More Information)|
|Robert LeMassena's Power Computation||3872||3640|
|Same as above plus superheater percentage||4569||3640|
|Same as above but substitute firebox area for grate area||20,768||20,000|