Taff Vale 4-4-2 Locomotives in Great_Britain
Class Details by Steve Llanso of Sweat House Media
Class 170 (Locobase 3213)
Data from "Ten-Wheel Tank Passenger Locomotive for the Taff Vale Railway", Engineering, Volume 48 (9 August 1889), p. 169, 172-173. See also "Passenger Tank Engines, Taff Vale Railway," Locomotive Magazine, Volume 21 (14 October 1916), p. 206; and Steven Dowd's history of Newton-le-Willows' Vulcan Foundry -- [
], last accessed 29 May 2009). Works numbers were 1229-1231 in 1888 and 1312-1314 in 1891.
The only 4-4-2 tank engine in Glover 's (1967) memory that had inside cylinders during the 1860-1890 (or "Mid-Victorian") period. Tom Hurry Riches designed this engine, which has a relatively large grate area for the time.
According to Stephen Dowd, these were the first ten-wheeled tank engines with inside cylinders to be built and the first by VFL to cast its cylinders en bloc.
| Principal Dimensions by Steve Llanso of Middle Run Media | |
|---|---|
| Class | 170 |
| Locobase ID | 3213 |
| Railroad | Taff Vale |
| Country | Great Britain |
| Whyte | 4-4-2T |
| Number in Class | 6 |
| Road Numbers | 170-175 |
| Gauge | Std |
| Number Built | 6 |
| Builder | Vulcan Foundry |
| Year | 1888 |
| Valve Gear | Stephenson |
| Locomotive Length and Weight | |
| Driver Wheelbase (ft / m) | 7.83 / 2.39 |
| Engine Wheelbase (ft / m) | 26.54 / 8.09 |
| Ratio of driving wheelbase to overall engine wheelbase | 0.30 |
| Overall Wheelbase (engine & tender) (ft / m) | 26.54 / 8.09 |
| Axle Loading (Maximum Weight per Axle) (lbs / kg) | |
| Weight on Drivers (lbs / kg) | 69,440 / 31,497 |
| Engine Weight (lbs / kg) | 120,960 / 54,867 |
| Tender Loaded Weight (lbs / kg) | |
| Total Engine and Tender Weight (lbs / kg) | |
| Tender Water Capacity (gals / ML) | 1680 / 6.36 |
| Tender Fuel Capacity (oil/coal) (gals/tons / Liters/MT) | 2.50 / 2 |
| Minimum weight of rail (calculated) (lb/yd / kg/m) | 58 / 29 |
| Geometry Relating to Tractive Effort | |
| Driver Diameter (in / mm) | 63 / 1600 |
| Boiler Pressure (psi / kPa) | 160 / 1100 |
| High Pressure Cylinders (dia x stroke) (in / mm) | 17.5" x 26" / 445x660 |
| Tractive Effort (lbs / kg) | 17,189 / 7796.81 |
| Factor of Adhesion (Weight on Drivers/Tractive Effort) | 4.04 |
| Heating Ability | |
| Tubes (number - dia) (in / mm) | 214 - 1.75" / 44 |
| Flues (number - dia) (in / mm) | |
| Flue/Tube length (ft / m) | 11.37 / 3.47 |
| Firebox Area (sq ft / m2) | 83.30 / 7.74 |
| Grate Area (sq ft / m2) | 19 / 1.77 |
| Evaporative Heating Surface (sq ft / m2) | 1213 / 112.69 |
| Superheating Surface (sq ft / m2) | |
| Combined Heating Surface (sq ft / m2) | 1213 / 112.69 |
| Evaporative Heating Surface/Cylinder Volume | 167.59 |
| Computations Relating to Power Output (More Information) | |
| Robert LeMassena's Power Computation | 3040 |
| Same as above plus superheater percentage | 3040 |
| Same as above but substitute firebox area for grate area | 13,328 |
| Power L1 | 3782 |
| Power MT | 240.15 |