Locobase entries 12045-12046 show two Vauclain compound Moguls that apparently were procured by the N & S to assess two combinations of cylinder volume and driver diamater. The 10 had the greater cylinder volume and taller drivers - its tractive effort calculates a bit higher.
In 1899, the N & S rebuilt the 10 as a 19" x 24" simple-expansion engine. Two years later, the railroad again modified the 10, creating a 4-4-0 with 18" x 24" cylinders and 68" drivers. After serving another 8 years, the 10 retired in 1910.
Locobase entries 12045-12046 show two Vauclain compound Moguls that apparently were procured by the N & S to assess two combinations of cylinder volume and driver diamater. The 9 had less cylinder volume, but smaller drivers. Surprisingly, perhaps, when the N & S bought a third compound Mogul, they bought a copy of the 9.
Both locomotives were rebuilt as 17" x 24" simple-expansion engines with 62" drivers soon after the turn of the Century. 9 was sold to the John L Roper Lumber Company in 1909. 11 was retired in June 1926.
Both were retired in January 1936.
Locobase 12045 describes the earlier two Vauclain compounds that came on the N & S. This later engine was bigger.
As with most North American compounds, this Mogul was later converted to simple expansion using two 17" x 24" cylinders. It was retired in June 1926.
|Specifications by Steve Llanso of Sweat House Media|
|Railroad||Norfolk & Southern (NS)||Norfolk & Southern (NS)||Norfolk & Southern (NS)||Norfolk & Southern (NS)||Norfolk & Southern (NS)|
|Number in Class||1||2||2||2||1|
|Road Numbers||10||16-17 / 110-111 / 106-107||9, 11||12, 15 / 108-109 / 100-101||11 / 107 / 103|
|Builder||Burnham, Williams & Co||Burnham, Williams & Co||Burnham, Williams & Co||Burnham, Williams & Co||Burnham, Williams & Co|
|Locomotive Length and Weight|
|Driver Wheelbase (ft)||15||15||15||15||15|
|Engine Wheelbase (ft)||23.75||22.67||23.08||22.67||23.08|
|Ratio of driving wheelbase to overall engine wheebase||0.63||0.66||0.65||0.66||0.65|
|Overall Wheelbase (engine & tender) (ft)|
|Axle Loading (Maximum Weight per Axle) (lbs)|
|Weight on Drivers (lbs)||82,000||92,000||75,000||77,000||76,000|
|Engine Weight (lbs)||100,000||110,000||90,000||94,000||90,000|
|Tender Loaded Weight (lbs)||75,000||75,000|
|Total Engine and Tender Weight (lbs)||185,000||169,000|
|Tender Water Capacity (gals)||3600||4000||3600||4000||3000|
|Tender Fuel Capacity (oil/coal) (gals/tons)|
|Minimum weight of rail (calculated) (lb/yd)||46||51||42||43||42|
|Geometry Relating to Tractive Effort|
|Driver Diameter (in)||62||62||56||62||56|
|Boiler Pressure (psi)||180||180||180||180||180|
|High Pressure Cylinders (dia x stroke) (in)||13" x 24"||18" x 24"||12" x 24"||17" x 24"||12" x 24"|
|Low Pressure Cylinders (dia x stroke) (in)||22" x 24"||20" x 24"||20" x 24"|
|Tractive Effort (lbs)||14,837||19,189||13,886||17,116||13,886|
|Factor of Adhesion (Weight on Drivers/Tractive Effort)||5.53||4.79||5.40||4.50||5.47|
|Firebox Area (sq ft)||130||113.40||123||99.10||123|
|Grate Area (sq ft)||17.10||24.50||17.10||24.70||17|
|Evaporative Heating Surface (sq ft)||1282||1417||1275||1204||1275|
|Superheating Surface (sq ft)|
|Combined Heating Surface (sq ft)||1282||1417||1275||1204||1275|
|Evaporative Heating Surface/Cylinder Volume||347.71||200.46||405.85||190.96||405.85|
|Computations Relating to Power Output (More Information)|
|Robert LeMassena's Power Computation||3078||4410||3078||4446||3060|
|Same as above plus superheater percentage||3078||4410||3078||4446||3060|
|Same as above but substitute firebox area for grate area||23,400||20,412||22,140||17,838||22,140|