Data from MP 1924 Locomotive Diagrams supplied in May 2005 by Allen Stanley from his extensive Rail Data Exchange. See also DeGolyer, Volume 12, p. 105. Works numbers were 7681-7682, 7687, 7698-7699 in October 1885.
This Mogul quintet was built at the same time as the Missouri Pacific locomotives shown in Locobase 7718. The Central Branch was built to take advantage of generous land grants secured through Congress in the late 1860s in central Kansas. In 1909, the CB was absorbed by the Missouri Pacific. The five engines all entered class M-51 and took the last five 3600 numbers in this large group.
| Principal Dimensions by Steve Llanso of Middle Run Media | |
|---|---|
| Class | 1000 |
| Locobase ID | 10045 |
| Railroad | Central Branch of the Union Pacific |
| Country | USA |
| Whyte | 2-6-0 |
| Number in Class | 7 |
| Road Numbers | 1000-1004/3685-3689 |
| Gauge | Std |
| Number Built | 7 |
| Builder | Burnham, Parry, Williams & Co |
| Year | 1885 |
| Valve Gear | Stephenson |
| Locomotive Length and Weight | |
| Driver Wheelbase (ft / m) | 12.59 / 3.84 |
| Engine Wheelbase (ft / m) | 20.04 / 6.11 |
| Ratio of driving wheelbase to overall engine wheelbase | 0.63 |
| Overall Wheelbase (engine & tender) (ft / m) | 45.98 / 14.01 |
| Axle Loading (Maximum Weight per Axle) (lbs / kg) | |
| Weight on Drivers (lbs / kg) | 86,400 / 39,190 |
| Engine Weight (lbs / kg) | |
| Tender Loaded Weight (lbs / kg) | 83,066 / 37,678 |
| Total Engine and Tender Weight (lbs / kg) | 83,066 / 37,678 |
| Tender Water Capacity (gals / ML) | 3500 / 13.26 |
| Tender Fuel Capacity (oil/coal) (gals/tons / Liters/MT) | 9 / 8 |
| Minimum weight of rail (calculated) (lb/yd / kg/m) | 48 / 24 |
| Geometry Relating to Tractive Effort | |
| Driver Diameter (in / mm) | 51 / 1295 |
| Boiler Pressure (psi / kPa) | 140 / 970 |
| High Pressure Cylinders (dia x stroke) (in / mm) | 19" x 22" / 483x559 |
| Tractive Effort (lbs / kg) | 18,531 / 8405.53 |
| Factor of Adhesion (Weight on Drivers/Tractive Effort) | 4.66 |
| Heating Ability | |
| Tubes (number - dia) (in / mm) | 192 - 2" / 51 |
| Flues (number - dia) (in / mm) | |
| Flue/Tube length (ft / m) | 10.66 / 3.25 |
| Firebox Area (sq ft / m2) | 110 / 10.22 |
| Grate Area (sq ft / m2) | 22.60 / 2.10 |
| Evaporative Heating Surface (sq ft / m2) | 1181 / 109.72 |
| Superheating Surface (sq ft / m2) | |
| Combined Heating Surface (sq ft / m2) | 1181 / 109.72 |
| Evaporative Heating Surface/Cylinder Volume | 163.57 |
| Computations Relating to Power Output (More Information) | |
| Robert LeMassena's Power Computation | 3164 |
| Same as above plus superheater percentage | 3164 |
| Same as above but substitute firebox area for grate area | 15,400 |
| Power L1 | 2853 |
| Power MT | 218.40 |