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Record: 71951 (21/04/2026)
(Free MySQL Counter)

GWR Armstrong "1076" Class 0-6-0ST - 'Buffalo'


Class Types
(Also known as) Buffalo

General
Designer Joseph Armstrong
Introduced 1870
Grouping Company Great Western Railway
Wheel Arrangement 0-6-0ST
Number Built as 1076 266
Manufacturers
ManufacturerTotal
Swindon Works 266
Orders
BuilderSponsorOrder #DateSize
Swindon Works  22 05/1870 6
Swindon Works  30 10/1872 30
Swindon Works  37 05/1874 20
Swindon Works  39 11/1874 20
Swindon Works  40 08/1875 20
Swindon Works  43 10/1876 20
Swindon Works  44 03/1877 20
Swindon Works  45 08/1877 30
Swindon Works  48 11/1878 20
Swindon Works  49 04/1879 20
Swindon Works  50 11/1879 20
Swindon Works  52 05/1880 20
Swindon Works  55 11/1880 20
Historical Data Most were rebuilt as pannier tanks in the early 1910's and 1920's. A number of these engines were built as broad gauge convertibles with the wheels outside the double frames. Some were even converted from standard gauge to broad gauge but all were converted to standard gauge by 1893.

Power
Buffalo 1076 727 Series 1134 Series Pannier tanks
Variant Introduced 1870 1872 1874
As Buffalo 1076
Miscellaneous Differences Side tanks (as built) and frames extending 5' 2" behind the trailing axle Short saddle tanks leaving the smokebox uncovered and frames extending 6' 0" at the back. Buffalo class with full length saddle tanks and frames further extended to 6' 9" at the back.
As Buffalo 1076
Tractive Effort 15,285lbs
As Buffalo 1076
As Buffalo 1076
As Buffalo 1076
Inside Cylinders 17" x 24" (2 off)
As Buffalo 1076
As Buffalo 1076
As Buffalo 1076
Inside Motion Stephenson
As Buffalo 1076
As Buffalo 1076
As Buffalo 1076

Wheels
Buffalo 1076 727 Series 1134 Series Pannier tanks
Drivers 4' 6"
As Buffalo 1076
As Buffalo 1076
As Buffalo 1076
Total Wheelbase 15' 8"
As Buffalo 1076
As Buffalo 1076
As Buffalo 1076
Descriptive Wheelbase 7' 4" + 8' 4" = 15' 8"
As Buffalo 1076
As Buffalo 1076
As Buffalo 1076

Dimensions
Buffalo 1076 727 Series 1134 Series Pannier tanks
Weight (in running order) 37t 14cwt
As Buffalo 1076
As Buffalo 1076
As Buffalo 1076
Adhesive Weight 37t 14cwt
As Buffalo 1076
As Buffalo 1076
As Buffalo 1076
Maximum Axle Load 12t 14cwt
As Buffalo 1076
As Buffalo 1076
As Buffalo 1076
Water Capacity 850gal
As Buffalo 1076
As Buffalo 1076
As Buffalo 1076

Boiler & Firebox
Buffalo 1076 727 Series 1134 Series Pannier tanks
Boiler Pitch 20' 7"
As Buffalo 1076
As Buffalo 1076
As Buffalo 1076