Surprisingly small Ten-wheeler for a branch of the St Paul & Sioux City that was originally built to forestall the construction of the Southern Minnesota line then planned for the same area. The little 4-6-0 may have been ordered by the Worthington & Sioux Falls as the #1, but the spec sheet in the DeGolyerRaildata collection shows that it was delivered to the O&NN.
In its career, the 2 was lettered for the Worthington & Dakota (1876), the Omaha & Northwestern (#2), St Paul & Sioux City (#50), and ultimately by the successor Chicago, Saint Paul, Minneapolis & Omaha (250).
At the same time Baldwin delivered 63"" mixed-traffic Eight-wheelers (Locobase 9301) locomotives to the WW, the builder supplied this quartet of freight engines that duplicated the order except for the smaller drivers.
Still on the small side, these Eight-wheelers had typical power dimensions for the time; they were delivered with 144 tubes. Their driver size equated to freight hauling.
Taken into the Omaha Road when the StP & SC taken over, most engines in this class were scrapped at the end of the first decade of the 20th Century.
Delivered to the NW from Pittsburgh as the latter's works #387. Ultimately this small Ten-wheeler was rebuilt as an 0-6-0 switcher.
|Specifications by Steve Llanso of Sweat House Media|
|Railroad||Omaha & Northern Nebraska (CStPMO)||West Wisconsin (CStPMO)||Sioux City & St Paul (CStPM&O)||Northern Wisconsin (CStPMO)|
|Number in Class||1||2||6||1|
|Road Numbers||2/50/250||17-18||35-36, 39-40, 43-44||1|
|Builder||Burnham, Parry, Williams & Co||M. Baird & Co||Burnham, Parry, Williams & Co||Pittsburgh|
|Locomotive Length and Weight|
|Ratio of driving wheelbase to overall engine wheebase||0.54||0.52||0.37||0.52|
|Overall Wheelbase (engine & tender)||45'||46'||43.67'||46'|
|Axle Loading (Maximum Weight per Axle)|
|Weight on Drivers||54000 lbs||41000 lbs||41000 lbs||45000 lbs|
|Engine Weight||72000 lbs||68000 lbs||68000 lbs||70000 lbs|
|Tender Light Weight||53000 lbs||49000 lbs||49700 lbs||51000 lbs|
|Total Engine and Tender Weight||125000 lbs||117000 lbs||117700 lbs||121000 lbs|
|Tender Water Capacity||2750 gals||2253 gals||2300 gals||2500 gals|
|Tender Fuel Capacity (oil/coal)||3.5 tons||5 tons||6 tons||6 tons|
|Minimum weight of rail (calculated)||30 lb/yard||23 lb/yard||23 lb/yard||25 lb/yard|
|Geometry Relating to Tractive Effort|
|Boiler Pressure||140 psi||140 psi||140 psi||140 psi|
|Cylinders (dia x stroke)||17" x 24"||16" x 24"||16" x 24"||16" x 24"|
|Tractive Effort||15573 lbs||12827 lbs||12606 lbs||12827 lbs|
|Factor of Adhesion (Weight on Drivers/Tractive Effort)||3.47||3.20||3.25||3.51|
|Firebox Area||98.40 sq. ft||87.50 sq. ft||104.70 sq. ft||97 sq. ft|
|Grate Area||14.30 sq. ft||13.40 sq. ft||15.30 sq. ft||14.80 sq. ft|
|Evaporative Heating Surface||975 sq. ft||887 sq. ft||901 sq. ft||1147 sq. ft|
|Combined Heating Surface||975 sq. ft||887 sq. ft||901 sq. ft||1147 sq. ft|
|Evaporative Heating Surface/Cylinder Volume||154.64||158.82||161.32||205.37|
|Computations Relating to Power Output (More Information)|
|Robert LeMassena's Power Computation||2002||1876||2142||2072|
|Same as above plus superheater percentage||2002||1876||2142||2072|
|Same as above but substitute firebox area for grate area||13776||12250||14658||13580|