Data from "Notes on English Railways - Manchester, Sheffield & Lincolnshire Ry", Engineering News, Volume 25 (25 April 1891), p. 391 and N Michell Whitley, "Modern Locomotive Practice," Scientific American Supplement, No 458 (11 October 1884), p. 7310.
Whitley's overview commented about this class: "This engine is remarkable for the great weight thrown on the driving wheels and its cylinder power is great in proportion to its adhesion, thus allowing the steam to be worked at a high rate of expansion, which is most favorable to the economical consumption of fuel." But note the factor of adhesion - even at 140 psi, it doesn't reach 3:1.
From the website [] (23 June 2003), which reproduces David Joy's diary.
Joy comments: "These big passenger engines were a splendid engine, with their ample surface, but afterwards they got scattered all over, two to the Great Northern Railway, where I once had a run on one of them from Retford to Doncaster in one minute over the number of miles+that was 60 miles per hour all the way." He notes that they burned 22.8 lb/mile (6.4 kg/km) over 560 miles (902 km).
NB: Tube length is an estimate calculated by taking the given tube count and diameter and the given tube heating surface area and estimating the tube length necessary to produce the latter figure.
From the website [] (23 June 2003), which reproduces David Joy's diary. See also "Some Links in the Evolution of the Locomotive", Railway Magazine, Volume 22 (June 1908), p.479.
This one was built a little before the "Big" Jenny Lind described in Joy's May 1848 entry and in Locobase as 5592. Joy commented that the 69 represented a response to Wilson & Fenton's attitude, which was "very stiff as to alterations on the standard 800 ft 'Jenny', which was being turned out ...one a week it was now."
RM's account established the futility of such a stand: "But the evolution of the locomotive was not to be prevented by such absurd disregard of the railways' requirements, for soon an enlarged 'Jenny' came ..."
Data from "Mr Sacre's Singles on the Great Central Ry, "The Locomotive Magazine, Vol IX (12 September 1903), p. p 162.
Designed by Charles Sacre'. These 12 express engines with outside slotted frames possessed a relatively large grate for their size. Like all Spinners, they showed a relatively low factor of adhesion.
Designed to pull the Grantham to Sheffield and Manchester legs of the very fast GNR express from London, they served in that role only a few years. In 1888, they were diverted to Manchester-Liverpool express service which was booked for 40-45 minutes. Then-locomotive superintendent Harry Pollitt rebuilt the engines, putting more weight on the driving axle, which now supported 44,128 lb. In this Cheshire Lines duty, a typical run would consist of 6 bogie coaches weighing 180 tons and cover the 34 miles in 40 minutes (51 mph) while consuming coal at a relatively modest rate of 32 lb/mile.
Principal Dimensions by Steve Llanso of Middle Run Media | ||||
---|---|---|---|---|
Class | 399 | Big Jenny Lind | Jenny Lind enlarged | Sacre |
Locobase ID | 13574 | 5592 | 5593 | 2220 |
Railroad | Manchester, Sheffield & Lincolnshire | Manchester, Sheffield & Lincolnshire | Manchester, Sheffield & Lincolnshire | Manchester, Sheffield & Lincolnshire |
Country | Great Britain | Great Britain | Great Britain | Great Britain |
Whyte | 2-2-2 | 2-2-2 | 2-2-2 | 2-2-2 |
Number in Class | 10 | 1 | 12 | |
Road Numbers | 69 | 399, 500-510 | ||
Gauge | Std | Std | Std | Std |
Number Built | 10 | 1 | 12 | |
Builder | MS & L | Beyer, Peacock | MS & L | |
Year | 1890 | 1848 | 1848 | 1865 |
Valve Gear | Stephenson | Stephenson | Stephenson | Stephenson |
Locomotive Length and Weight | ||||
Driver Wheelbase (ft / m) | ||||
Engine Wheelbase (ft / m) | 15.75 / 4.80 | 15.75 | ||
Ratio of driving wheelbase to overall engine wheelbase | ||||
Overall Wheelbase (engine & tender) (ft / m) | 36.92 / 11.25 | |||
Axle Loading (Maximum Weight per Axle) (lbs / kg) | 30,312 | 25,200 / 11,431 | 39,312 / 17,832 | |
Weight on Drivers (lbs / kg) | 30,312 / 13,749 | 25,200 / 11,431 | 18,312 / 8306 | 39,312 / 17,832 |
Engine Weight (lbs / kg) | 90,944 / 41,252 | 55,888 / 25,350 | 56,784 / 25,757 | 90,944 / 41,252 |
Tender Loaded Weight (lbs / kg) | 37,250 / 16,896 | |||
Total Engine and Tender Weight (lbs / kg) | 128,194 / 58,148 | |||
Tender Water Capacity (gals / ML) | 3000 / 11.36 | 2400 / 9.09 | ||
Tender Fuel Capacity (oil/coal) (gals/tons / Liters/MT) | 2.80 / 3 | |||
Minimum weight of rail (calculated) (lb/yd / kg/m) | 51 / 25.50 | 42 / 21 | 31 / 15.50 | 66 / 33 |
Geometry Relating to Tractive Effort | ||||
Driver Diameter (in / mm) | 90 / 2286 | 72 / 1829 | 78 / 1981 | 90 / 2286 |
Boiler Pressure (psi / kPa) | 140 / 1100 | 120 / 830 | 120 / 830 | 150 / 1030 |
High Pressure Cylinders (dia x stroke) (in / mm) | 17.5" x 26" / 445x660 | 16" x 22" / 406x559 | 16" x 22" / 406x559 | 17.5" x 26" / 445x660 |
Tractive Effort (lbs / kg) | 10,528 / 4775.43 | 7979 / 3619.22 | 7365 / 3340.71 | 11,280 / 5116.53 |
Factor of Adhesion (Weight on Drivers/Tractive Effort) | 2.88 | 3.16 | 2.49 | 3.49 |
Heating Ability | ||||
Tubes (number - dia) (in / mm) | 195 - 1.75" / 44 | 206 - 2" / 51 | 169 - 2" / 51 | 195 - 1.75" / 44 |
Flues (number - dia) (in / mm) | ||||
Flue/Tube length (ft / m) | 12 / 3.66 | 9.67 / 2.95 | 10.33 / 3.15 | |
Firebox Area (sq ft / m2) | 87 / 8.08 | 149 / 13.84 | 90 / 8.36 | 87 / 8.09 |
Grate Area (sq ft / m2) | 17 / 1.58 | 17 / 1.58 | ||
Evaporative Heating Surface (sq ft / m2) | 1144 / 106.28 | 1185 / 110.09 | 1005 / 93.37 | 1144 / 106.32 |
Superheating Surface (sq ft / m2) | ||||
Combined Heating Surface (sq ft / m2) | 1144 / 106.28 | 1185 / 110.09 | 1005 / 93.37 | 1144 / 106.32 |
Evaporative Heating Surface/Cylinder Volume | 158.05 | 231.46 | 196.30 | 158.05 |
Computations Relating to Power Output (More Information) | ||||
Robert LeMassena's Power Computation | 2380 | 2550 | ||
Same as above plus superheater percentage | 2380 | 2550 | ||
Same as above but substitute firebox area for grate area | 12,180 | 17,880 | 10,800 | 13,050 |
Power L1 | 4581 | 5429 | 4434 | 4908 |
Power MT | 333.18 | 474.96 | 533.82 | 275.24 |