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GCR/LNER Robinson "S1" Class 0-8-4T


Class Types
GCR Class 8H

General
Designer Robinson
Introduced 1907
Pre-Grouping Great Central Railway
Big Four London and North Eastern Railway
Description (1957) Class S1/1. Robinson heavy 3-cylinder 4'8" 0-8-4T's, built in 1908 for shunting in Wath marshalling yard. No. 69901 was rebuilt in 1932 with a booster to the rear bogie, the booster being later removed. This locomotive was classified S1/2. All scrapped by 1957.

Class S1/3, being Gresley's development of the original Great Central design, built in 1932 with booster, which was later removed. Both scrapped by 1957.
Wheels 0-8-4T
Number Built as S1 6
First in Service 12/1907
Last in Service 01/1957
Manufacturers
ManufacturerTotal
Beyer Peacock Ltd. 4
Gorton Works 2
Orders
BuilderOrder #DateSize
Beyer Peacock Ltd. 9655 1907 4
Gorton Works n/a 1932 2

Power
S1/1 S1/2 S1/3
Variant Introduced 1907 1908 1932
Tractive Effort 34,523lbs 34,523lbs
As S1/2
Booster Tractive Effort   12,373lbs 12,373lbs
Inside Cylinders 18" x 26" (1 off) 18" x 26" (1 off) 18" x 26" (1 off)
Inside Valves Slide Slide Slide
Inside Motion Stephenson Stephenson Stephenson
Outside Cylinders 18" x 26" (2 off) 18" x 26" (2 off) 18" x 26" (2 off)
Outside Valves Slide Slide Slide
Outside Motion Stephenson Stephenson Stephenson

Wheels
S1/1 S1/2 S1/3
Drivers 4' 8"
As S1/1
As S1/1
Truck 3' 6" 3' 2"
As S1/2
Total Wheelbase 30' 8" 31' 2"
As S1/2
Descriptive Wheelbase 5' 8½" + 5' 5½" + 5' 11" + 6' 1" + 7' 6"
= 30' 8"
5' 8½" + 5' 5½" + 5' 11" + 5' 7" + 8' 6"
= 31' 2"
As S1/2

Dimensions
S1/1 S1/2 S1/3
Length (over buffers) 45' 114" 45' 214"
As S1/2
Weight (in running order) 99t 0cwt 104t 9cwt 104t 5cwt
Adhesive Weight 75t 12cwt 75t 14cwt 75t 13cwt
Maximum Axle Load 18t 18cwt 19t 8cwt 19t 8cwt
Water Capacity 3,000gal 2,970gal 2,680gal
Coal Capacity 5t 0cwt 5t 0cwt 6t 0cwt

Boiler & Firebox
S1/1 S1/2 S1/3
Boiler Pitch 8' 612"
As S1/1
As S1/1