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Record: 10235 (26/09/2023)
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NBR/LNER Reid "D30" Class 4-4-0 - 'Scott'


Class Types
NBR Class J
NBR Class D30
(Also known as) Scott

General
Designer William Reid
Introduced 1912
Pre-Grouping Company North British Railway
Grouping Company London and North Eastern Railway
Description (1957) Class D30, the later 'Scott' series of 27 engines in the class, built new with superheaters between 1912 and 1920. Two engines had been scrapped prior to Nationalization, and three more were scrapped during 1957.
Wheel Arrangement 4-4-0
Number Built as D30 27
First in Service 09/1912
Last in Service 25/06/1960
Manufacturers
ManufacturerTotal
Cowlairs Works 27
Orders
BuilderSponsorOrder #DateSize
Cowlairs Works  n/a 1912 2
Cowlairs Works  n/a 1914 15
Cowlairs Works  n/a 1915 5
Cowlairs Works  n/a 1920 5

Power
D30/1 D30/2
Variant Introduced 1912 1914
Tractive Effort 18,700lbs
As D30/1
Inside Cylinders 20" x 26" (2 off)
As D30/1
Inside Valves 8"Piston 10"Piston
Inside Motion Stephenson
As D30/1

Wheels
D30/1 D30/2
Pony 3' 6"
As D30/1
Drivers 6' 6"
As D30/1
Locomotive Wheelbase 23' 7"
As D30/1
Tender Wheelbase 13' 6"
As D30/1
Total Wheelbase 46' 812"
As D30/1
Descriptive Wheelbase 6' 6" + 7' 7" + 9' 6" + 9' 7½" + 6' 9" + 6' 9" = 46' 8½"
As D30/1

Dimensions
D30/1 D30/2
Length (over buffers) 56' 3"
As D30/1
Weight (in running order) 103t 12cwt 104t 9cwt
Weight (loco only) 57t 6cwt 57t 16cwt
Water Capacity 4,235gal
As D30/1

Boiler & Firebox
D30/1 D30/2
Boiler Diagram 78 78
Boiler Max Diameter 5' 5'
Boiler Barrel Length 11' 4" 11' 4"
Boiler Pressure 165lbs 165lbs
Boiler Pitch 8' 6"
As D30/1
Firebox Type Round Top Round Top
Firebox Length 6' 812" 6' 812"
Firebox Grate Area 21.13ft2 21.13ft2
Firebox Heating Surface 139.7ft2 139.7ft2
Tube Number 124 124
Tube Diameter 178" 178"
Tube Area 677.04ft2 677.04ft2
Flue Elements 22 22
Flue Diameter 5" 5"
Flue Area 192.92ft2 192.92ft2
Total Evaporative Area 1153.14ft2 1153.14ft2
Superheater Element Area 192.92ft2 192.92ft2
Total Heating Area 1346.06ft2 1346.06ft2