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MSLR/LNER Parker "D8" Class 4-4-0


Class Types
MSLR Class 6DB
LNER Class D8

General
Designer Parker
Introduced 1888
Pre-Grouping Manchester, Sheffield and Lincolnshire Railway
Big Four London and North Eastern Railway
Wheels 4-4-0
Number Built as D8 3
Number Scrapped 3
First in Service 07/1888
Last in Service 03/1926
Manufacturers
ManufacturerTotal
Gorton Works 3
Orders
BuilderOrder #DateSize
Gorton Works n/a 1888 3

Illustration
Copyright: John Sutters c/o Phil Seaford
Power
Round Top Belpaire boiler
Variant Introduced 1888 1910
Tractive Effort 14,057lbs
As Round Top
Inside Cylinders 18" x 26" (2 off)
As Round Top
Inside Valves Slide
As Round Top
Inside Motion Stephenson
As Round Top

Wheels
Round Top Belpaire boiler
Pony 3' 612"
As Round Top
Drivers 6' 912"
As Round Top
Locomotive Wheelbase 22'
As Round Top
Tender Wheelbase 12' 6"
As Round Top
Total Wheelbase 44' 512"
As Round Top
Descriptive Wheelbase 6' 0" + 7' 6" + 8' 6" + 9' 11½" + 6' 3" + 6' 3" = 44' 5½"
As Round Top

Dimensions
Round Top Belpaire boiler
Length (over buffers) 54' 078"
As Round Top
Weight (in running order) 77t 2cwt 79t 7cwt
Weight (loco only) 45t 19cwt 48t 4cwt
Adhesive Weight 31t 12cwt 31t 16cwt
Maximum Axle Load 16t 16cwt 15t 18cwt
Water Capacity 2,600gal
As Round Top
Coal Capacity 2t 15cwt
As Round Top

Boiler & Firebox
Round Top Belpaire boiler
Boiler Diagram   21
Boiler Notes   Robinson GCR Standard No 1 boiler
Boiler Max Diameter 4' 5" 4' 4"
Boiler Barrel Length 11' 10' 818"
Boiler Pressure 160lbs 160lbs
Boiler Pitch 7' 4" 7' 714"
Firebox Length 6' 6" 6'
Firebox Grate Area 19ft2 18.3ft2
Firebox Heating Surface 112ft2 99ft2
Tube Number 215 190
Tube Diameter 134" 134"
Tube Area 1118ft2 964ft2
Total Evaporative Area 1230ft2 1063ft2
Total Heating Area 1230ft2 1063ft2