Data from DeGolyer, Volume 72, pp. 337+. See also F T Slayton, "Baldwin Locomotives of Modern Types in Service in India", Baldwin Magazine, Volume 4, No. 1 (July 1925), p. 57-58. Works numbers were 58052-58056 in October 1924.
Locobase 14379 refers to the split between Jodhpur and Bikaner railways and shows the Bikaner engines. Baldwin's Slayton wrote that the JR's immediate requirement was locomotives able to handle grain traffic that had grown to 9 trains daily.
This set arrived on the Jodhpur State some six months later. They too had 8" (203 mm) piston valves. The specs note that all wood pieces were to be of teak.
Trial trips showed that the Mikado could handle 75 carloads from Kacham Road, 80 from Merta Road. "Therefore," Slayton asserted, "the railway has been able to increase its tonnage per train fully 75% by acquiring modern engines designed to meet their specific requirements.'
| Principal Dimensions by Steve Llanso of Middle Run Media | |
|---|---|
| Class | 085 |
| Locobase ID | 15291 |
| Railroad | Jodhpur State |
| Country | India |
| Whyte | 2-8-2 |
| Number in Class | 5 |
| Road Numbers | 085-089 |
| Gauge | Metre |
| Number Built | 5 |
| Builder | Baldwin |
| Year | 1924 |
| Valve Gear | Walschaert |
| Locomotive Length and Weight | |
| Driver Wheelbase (ft / m) | 12.50 / 3.81 |
| Engine Wheelbase (ft / m) | 26.58 / 8.10 |
| Ratio of driving wheelbase to overall engine wheelbase | 0.47 |
| Overall Wheelbase (engine & tender) (ft / m) | 48.79 / 14.87 |
| Axle Loading (Maximum Weight per Axle) (lbs / kg) | 20,160 / 9144 |
| Weight on Drivers (lbs / kg) | 80,500 / 36,514 |
| Engine Weight (lbs / kg) | 104,000 / 47,174 |
| Tender Loaded Weight (lbs / kg) | 79,800 / 36,197 |
| Total Engine and Tender Weight (lbs / kg) | 183,800 / 83,371 |
| Tender Water Capacity (gals / ML) | 3600 / 13.64 |
| Tender Fuel Capacity (oil/coal) (gals/tons / Liters/MT) | 8.30 / 8 |
| Minimum weight of rail (calculated) (lb/yd / kg/m) | 34 / 17 |
| Geometry Relating to Tractive Effort | |
| Driver Diameter (in / mm) | 44 / 1118 |
| Boiler Pressure (psi / kPa) | 180 / 1240 |
| High Pressure Cylinders (dia x stroke) (in / mm) | 16" x 22" / 406x559 |
| Tractive Effort (lbs / kg) | 19,584 / 8883.16 |
| Factor of Adhesion (Weight on Drivers/Tractive Effort) | 4.11 |
| Heating Ability | |
| Tubes (number - dia) (in / mm) | 87 - 2" / 51 |
| Flues (number - dia) (in / mm) | 14 - 5.375" / 137 |
| Flue/Tube length (ft / m) | 16 / 4.88 |
| Firebox Area (sq ft / m2) | 99 / 9.20 |
| Grate Area (sq ft / m2) | 24.90 / 2.31 |
| Evaporative Heating Surface (sq ft / m2) | 1138 / 105.72 |
| Superheating Surface (sq ft / m2) | 265 / 24.62 |
| Combined Heating Surface (sq ft / m2) | 1403 / 130.34 |
| Evaporative Heating Surface/Cylinder Volume | 222.28 |
| Computations Relating to Power Output (More Information) | |
| Robert LeMassena's Power Computation | 4482 |
| Same as above plus superheater percentage | 5334 |
| Same as above but substitute firebox area for grate area | 21,206 |
| Power L1 | 10,360 |
| Power MT | 1134.90 |