Data from Ahrons (1927), "Baltic Type, Midland Ry, London, Tilsbury & Southend Section", Locomotive Magazine, Volume XIX [19] No 249 (15 May 1913), p. 97. and 1946 Beyer, Peacock catalogue (page 35) hosted on Martyn Bane's website at [] (accessed 21 May 2006), later available at [], last accessed 9 December 2025. See also H C Casserly, "The Locomotives of the Midland Railway, Part 9- the Tilsbury Tanks", Locomotive Notes and Railway News, Volume VI [6], No 31 (10 June 1920), p 8. (Thanks to Peter Christener for his 18 November 2025 email correcting the class ID.) Works numbers for Batch#0396 were 5608-5615.
Big inside-cylinder tank engine by Robert Harben Whitelegg. LM described the octet as "practically an enlargement of the 4-4-2 tanks used on the London and Southend service."
Locobase took the Beyer, Peacock values for the heating surface area. LM gave the heating surface areas as 1,305 sq ft (121.24 sq m) from the tubes, 141 sq ft from the firebox (13.10 sq m) for 1,446 sq ft (134.34 sq m) total EHS.and 25 sq ft (2.32 sq m) for the grate area. With superheater, combined heating surface added up to 1,765 sq ft (163.97 sq m).
OS Nock (RWC IV, 149) reported that they proved too heavy for the LTS, which was now owned by Midland Railway, which transferred them to Wellingborough where they hauled goods trains to Cricklewood.
The LMS ultimately rostered the class, but scrapped all eight in 1929-1934.
| Principal Dimensions by Steve Llanso of Middle Run Media | |
|---|---|
| Class | 2100 Class |
| Locobase ID | 2324 |
| Railroad | London, Tilbury & Southend |
| Country | Great Britain |
| Whyte | 4-6-4T |
| Number in Class | 8 |
| Road Numbers | 2100-2107 |
| Gauge | Std |
| Number Built | 8 |
| Builder | Beyer, Peacock |
| Year | 1912 |
| Valve Gear | |
| Locomotive Length and Weight | |
| Driver Wheelbase (ft / m) | 13.83 / 4.22 |
| Engine Wheelbase (ft / m) | 38.85 / 11.84 |
| Ratio of driving wheelbase to overall engine wheelbase | 0.36 |
| Overall Wheelbase (engine & tender) (ft / m) | 38.85 / 11.84 |
| Axle Loading (Maximum Weight per Axle) (lbs / kg) | 40,320 / 18,289 |
| Weight on Drivers (lbs / kg) | 120,400 / 54,613 |
| Engine Weight (lbs / kg) | 211,904 / 96,118 |
| Tender Loaded Weight (lbs / kg) | |
| Total Engine and Tender Weight (lbs / kg) | |
| Tender Water Capacity (gals / ML) | 2640 / 10 |
| Tender Fuel Capacity (oil/coal) (gals/tons / Liters/MT) | 3.30 / 3 |
| Minimum weight of rail (calculated) (lb/yd / kg/m) | 67 / 33.50 |
| Geometry Relating to Tractive Effort | |
| Driver Diameter (in / mm) | 75 / 1905 |
| Boiler Pressure (psi / kPa) | 160 / 1100 |
| High Pressure Cylinders (dia x stroke) (in / mm) | 20" x 26" / 508x660 |
| Tractive Effort (lbs / kg) | 18,859 / 8554.31 |
| Factor of Adhesion (Weight on Drivers/Tractive Effort) | 6.38 |
| Heating Ability | |
| Tubes (number - dia) (in / mm) | |
| Flues (number - dia) (in / mm) | |
| Flue/Tube length (ft / m) | 17.25 / 5.26 |
| Firebox Area (sq ft / m2) | 123 / 11.43 |
| Grate Area (sq ft / m2) | 24.90 / 2.31 |
| Evaporative Heating Surface (sq ft / m2) | 1296 / 120.40 |
| Superheating Surface (sq ft / m2) | 319 / 29.64 |
| Combined Heating Surface (sq ft / m2) | 1615 / 150.04 |
| Evaporative Heating Surface/Cylinder Volume | 137.09 |
| Computations Relating to Power Output (More Information) | |
| Robert LeMassena's Power Computation | 3984 |
| Same as above plus superheater percentage | 4781 |
| Same as above but substitute firebox area for grate area | 23,616 |
| Power L1 | 10,116 |
| Power MT | 555.70 |