Ulster & Delaware 4-6-0 "Ten-Wheeler" Locomotives in the USA
Class Details by Steve Llanso of Sweat House Media
Class 30 (Locobase 4791)
Data from Railway and Locomotive Engineering, Volume 20, #1 (July 1907), pp. 310-311.
According to [
], this Catskill railroad took delivery of these engines in two 6-locomotive batches (builder numbers 39952-39957 and 43061-43066). A builder's photo shows a high-pitched boiler with tapered second course Four were superheated and had their cylinders enlarged to 21 x 26" in 1923-1924.
Except for #31, all were taken into New York Central service when the U&D was absorbed in February 1932. At that point they were renumbered (along with an earlier, lighter class) in the 800 series.
| Principal Dimensions by Steve Llanso of Middle Run Media | |
|---|---|
| Class | 30 |
| Locobase ID | 4791 |
| Railroad | Ulster & Delaware |
| Country | USA |
| Whyte | 4-6-0 |
| Number in Class | 12 |
| Road Numbers | 30-41 |
| Gauge | Std |
| Number Built | 12 |
| Builder | Alco-Schenectady |
| Year | 1906 |
| Valve Gear | Stephenson |
| Locomotive Length and Weight | |
| Driver Wheelbase (ft / m) | 14 / 4.27 |
| Engine Wheelbase (ft / m) | 24.75 / 7.54 |
| Ratio of driving wheelbase to overall engine wheelbase | 0.57 |
| Overall Wheelbase (engine & tender) (ft / m) | 52.04 / 15.86 |
| Axle Loading (Maximum Weight per Axle) (lbs / kg) | |
| Weight on Drivers (lbs / kg) | 125,000 / 56,699 |
| Engine Weight (lbs / kg) | 164,000 / 74,389 |
| Tender Loaded Weight (lbs / kg) | 107,600 / 48,807 |
| Total Engine and Tender Weight (lbs / kg) | 271,600 / 123,196 |
| Tender Water Capacity (gals / ML) | 5000 / 18.94 |
| Tender Fuel Capacity (oil/coal) (gals/tons / Liters/MT) | 9 / 8 |
| Minimum weight of rail (calculated) (lb/yd / kg/m) | 69 / 34.50 |
| Geometry Relating to Tractive Effort | |
| Driver Diameter (in / mm) | 63 / 1600 |
| Boiler Pressure (psi / kPa) | 200 / 1380 |
| High Pressure Cylinders (dia x stroke) (in / mm) | 20" x 26" / 508x660 |
| Tractive Effort (lbs / kg) | 28,063 / 12729.18 |
| Factor of Adhesion (Weight on Drivers/Tractive Effort) | 4.45 |
| Heating Ability | |
| Tubes (number - dia) (in / mm) | 304 - 2" / 51 |
| Flues (number - dia) (in / mm) | |
| Flue/Tube length (ft / m) | 14.33 / 4.37 |
| Firebox Area (sq ft / m2) | 143.90 / 13.37 |
| Grate Area (sq ft / m2) | 43.50 / 4.04 |
| Evaporative Heating Surface (sq ft / m2) | 2412 / 224.16 |
| Superheating Surface (sq ft / m2) | |
| Combined Heating Surface (sq ft / m2) | 2412 / 224.16 |
| Evaporative Heating Surface/Cylinder Volume | 255.24 |
| Computations Relating to Power Output (More Information) | |
| Robert LeMassena's Power Computation | 8700 |
| Same as above plus superheater percentage | 8700 |
| Same as above but substitute firebox area for grate area | 28,780 |
| Power L1 | 6959 |
| Power MT | 368.21 |