2-8-6
Encyclopedia
In the Whyte notation
for describing steam locomotive
wheel arrangement
, a 2-8-6 is a locomotive with a two-wheel leading truck, eight driving wheel
s, and a six-wheel trailing truck. All 2-8-6 locomotives constructed have been 2-8-6T tank locomotive
s of the Mason Bogie
pattern.
Other equivalent classifications are:
UIC classification
: 1D3 (also known as German classification and Italian classification)
French classification: 143
Turkish classification
: 48
Swiss classification: 4/8
In the UIC classification
as applied in Germany and Italy, a rigid-framed locomotive of this arrangement would be 1'D3', and the Mason bogie (1'D)'3'.
Three Mason Bogies of this type were built for the Denver, South Park and Pacific Railroad
; #25 Alpine, #26 Rico, #27 Roaring Fork and #28 Denver. They were narrow gauge locomotives of gauge. Some were later sold to the Chicago, Burlington and Quincy Railroad
.
Whyte notation
The Whyte notation for classifying steam locomotives by wheel arrangement was devised by Frederick Methvan Whyte and came into use in the early twentieth century encouraged by an editorial in American Engineer and Railroad Journal...
for describing steam locomotive
Steam locomotive
A steam locomotive is a railway locomotive that produces its power through a steam engine. These locomotives are fueled by burning some combustible material, usually coal, wood or oil, to produce steam in a boiler, which drives the steam engine...
wheel arrangement
Wheel arrangement
In rail transport, a wheel arrangement is a system of classifying the way in which wheels are distributed beneath a locomotive.. Several notations exist to describe the wheel assemblies of a locomotive by type, position, and connections, with the adopted notations varying by country...
, a 2-8-6 is a locomotive with a two-wheel leading truck, eight driving wheel
Driving wheel
On a steam locomotive, a driving wheel is a powered wheel which is driven by the locomotive's pistons...
s, and a six-wheel trailing truck. All 2-8-6 locomotives constructed have been 2-8-6T tank locomotive
Tank locomotive
A tank locomotive or tank engine is a steam locomotive that carries its water in one or more on-board water tanks, instead of pulling it behind it in a tender. It will most likely also have some kind of bunker to hold the fuel. There are several different types of tank locomotive dependent upon...
s of the Mason Bogie
Mason Bogie
The Mason Bogie is a type of articulated steam locomotive suited for sharp curves and uneven track, once commonly used on narrow gauge lines in the United States...
pattern.
Other equivalent classifications are:
UIC classification
UIC classification
The UIC classification of locomotive axle arrangements describes the wheel arrangement of locomotives, multiple units and trams. It is set out in the International Union of Railways "Leaflet 650 - Standard designation of axle arrangement on locomotives and multiple-unit sets". It is used in much...
: 1D3 (also known as German classification and Italian classification)
French classification: 143
Turkish classification
Turkish classification
In the Turkish classification system for railway locomotives, the number of powered axles are followed by the total number of axles. It is identical to the Swiss system except that the latter places a slash between the two numbers.Thus0-6-0 becomes 33...
: 48
Swiss classification: 4/8
In the UIC classification
UIC classification
The UIC classification of locomotive axle arrangements describes the wheel arrangement of locomotives, multiple units and trams. It is set out in the International Union of Railways "Leaflet 650 - Standard designation of axle arrangement on locomotives and multiple-unit sets". It is used in much...
as applied in Germany and Italy, a rigid-framed locomotive of this arrangement would be 1'D3', and the Mason bogie (1'D)'3'.
Three Mason Bogies of this type were built for the Denver, South Park and Pacific Railroad
Denver, South Park and Pacific Railroad
The Denver, South Park, and Pacific Railroad was a historic narrow gauge railway that operated in Colorado in the western United States in the late 19th century. The railroad opened up the first rail routes to a large section of the central Colorado mining district in the decades of the mineral boom...
; #25 Alpine, #26 Rico, #27 Roaring Fork and #28 Denver. They were narrow gauge locomotives of gauge. Some were later sold to the Chicago, Burlington and Quincy Railroad
Chicago, Burlington and Quincy Railroad
The Chicago, Burlington and Quincy Railroad was a railroad that operated in the Midwestern United States. Commonly referred to as the Burlington or as the Q, the Burlington Route served a large area, including extensive trackage in the states of Colorado, Illinois, Iowa, Kentucky, Missouri,...
.