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Record: 10408 (31/12/2024)
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NBR/LNER "Y9" Class 0-4-0ST
Class Types
NBR Class |
G |
LNER Class |
Y9 |
General
Introduced |
1882 |
Pre-Grouping Company |
North British Railway |
Grouping Company |
London and North Eastern Railway |
Description (1957) |
Class Y9. North British 3'8" 0-4-0ST's, originally a class of 38 engines built 1882-99. Thirty-three were still running in 1948 and of these 14 were withdrawn between 1953 and 1955. |
Wheel Arrangement |
0-4-0ST |
Number Built as Y9 |
38 |
Number Scrapped |
37 |
Number Preserved |
1 |
Last in Service |
29/12/1962 |
Manufacturers |
|
Orders |
|
Historical Data |
The first two engines were Neilson standard design 0-4-0ST. They proved to be ideal for dock work due to their short wheelbase, resulting in 6 batches of 6 engines being built at the NBR's own works at Cowlairs. They also found work in small industrial yards throughout the NBR system at places such as Dundee. They were reboilered from 1913 onwards and from 1920 onwards, a number of engines were fitted with a steam brake, replacing the hand brake they were built with. |
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Power
Variant Introduced |
1882 |
Tractive Effort |
9,845lbs |
Outside Cylinders |
14" x 20" (2 off) |
Outside Valves |
Slide |
Outside Motion |
Stephenson |
Wheels
Drivers |
3' 8" |
Total Wheelbase |
7' |
Descriptive Wheelbase |
7' 0" |
Dimensions
Length (over buffers) |
23' 83⁄4" |
Weight (in running order) |
27t 16cwt |
Adhesive Weight |
27t 16cwt |
Maximum Axle Load |
14t 3cwt |
Water Capacity |
720gal |
Coal Capacity |
0t 18cwt |
Boiler & Firebox
Boiler Diagram |
85 |
Boiler Max Diameter |
3' 95⁄8" |
Boiler Barrel Length |
10' 43⁄8" |
Boiler Pressure |
130lbs |
Boiler Pitch |
5' 41⁄2" |
Firebox Type |
Round Top |
Firebox Length |
3' 6" |
Firebox Grate Area |
10ft2 |
Firebox Heating Surface |
49ft2 |
Tube Number |
150 |
Tube Diameter |
13⁄4" |
Tube Area |
739ft2 |
Total Evaporative Area |
788ft2 |
Total Heating Area |
788ft2 |
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