NER Bogie Tank Passenger

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NER Bogie Tank Passenger
LNER Class G6
Type and origin
Power typeSteam
Designer Edward Fletcher
Builder
  • Neilson & Co.
  • Hawthorn & Co.
  • NER, Gateshead
  • NER, Darlington
  • NER, York
Build date1874–84
Total produced124
Specifications
Configuration:
​
 •  Whyte 0-4-4T
Driver dia.5 ft 6 in (1.68 m)
Trailing dia. 3 ft 4 in (1.02 m)
Wheelbase 21 ft 8 in (6.60 m)
Length33 ft 8 in (10.26 m)
Fuel capacity2 long tons (2.0 t)
Water cap.1,000 imp gal (4,500 l; 1,200 US gal)
Firebox:
 • Firegrate area		12.8 sq ft (1.19 m2)
Boiler10 ft 7 in (3.23 m) length
4 ft 3 in (1.30 m) diameter
Boiler pressure160 psi (1.1 MPa)
Heating surface1,109 sq ft (103.0 m2)
 • Tubes1,025 sq ft (95.2 m2) (205 x 1.75")
 • Firebox84 sq ft (7.8 m2)
Cylinders 2
Cylinder size 17 in × 24 in (430 mm × 610 mm)
Performance figures
Tractive effort 13,101 lbf (58.28 kN)
Career
Operators North Eastern Railway
London and North Eastern Railway
Class LNER: G6
Withdrawn1920-1929
Disposition

The North Eastern Railway (NER) Bogie Tank Passenger (BTP) locomotives were designed by Edward Fletcher in 1873. The locomotives were for hauling passenger services on branch lines. They had an 0-4-4 wheel layout and a total of 124 locomotives were built. They were designated G6 by the London and North Eastern Railway (LNER). [1]

Contents

Rebuilds

With the introduction of the NER Class O (LNER G5), BTP locomotives started to become redundant. Fifty of the redundant BTPs were rebuilt between 1899 and 1908 as NER Class 290 (later LNER Class J77) 0-6-0T locomotives. [2] In 1903, locomotive No. 957 was rebuilt as a 2-2-4T (later designated LNER Class X2) specifically for hauling an officer's saloon. [3] With the reduction in passenger services towards the end of World War I, many of the BTPs became redundant. In 1921, ten BTPs were rebuilt to create further Class 290 locomotives.

Steam autocars

Many class BTPs gained a further lease of life in the early 1900s by being converted to work the Steam Autocars (push–pull trains) then being introduced. A Steam Autocar consisted of a BTP with one or two coaches (in which case the engine was in the middle), the train was driven from a driving compartment in the leading coach, leaving the fireman on the footplate. The driver had control of the regulator and reverser by means of a mechanical connection running under the coach and connecting to the engine using a form of universal joints. The driver also had full (Westinghouse) brake control via a second air pipe connection to the engine. This high pressure air supply also worked a whistle mounted above the driving compartment. Finally there was speaking tube communication between the driver and fireman - although there is evidence that this was little used.

Steam autocars were gradually withdrawn as the LNER introduced Sentinel steam railcars. The coaches were converted back to normal coaches but the BTPs were withdrawn.

Withdrawal

Withdrawals of the G6 took place between 1920 and 1929, and none were preserved.

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References

  1. ↑ "NER Fletcher G6 0-4-4T BTP (Bogie Tank Passenger) Locomotives". LNER Encyclopedia.
  2. ↑ "Wilson Worsdell X2 (NER No. 957) 2-2-4T Locomotive". LNER Encyclopedia.
  3. ↑ "W.Worsdell J77 (NER Class 290) 0-6-0 Tank Engines". LNER Encyclopedia.
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