2-8-6T

{{Short description|Locomotive wheel arrangement}}

{{refimprove|date=April 2014}}

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 wheels, and a six-wheel trailing truck. All 2-8-6 locomotives constructed have been Mason Bogie tank locomotives.

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'.

Four 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 {{RailGauge|3ft}} gauge.

Two more went to the Denver, Utah and Pacific, #10 Middle Park and #19 Denver. The DU&P sold one of the latter to the Burlington and Northwestern Railway, a narrow-gauge affiliate of the CB&Q operating in Iowa.Burlington & Western, B&NW Narrow Gauge Branch Lines, [http://c-sng-discussion-forum.41377.n7.nabble.com/file/n14854/Bogie.jpg Burlington Bulletin No. 30] {{Webarchive|url=https://web.archive.org/web/20200612163412/http://c-sng-discussion-forum.41377.n7.nabble.com/file/n14854/Bogie.jpg |date=2020-06-12 }}, Burlington Route Historical Society, 1994; page 6.Mason Bogie loco 2-8-6T narrow gauge B&NW #1 (c1890), [http://www.burlingtonroute.com/docs/library/subphoto/m.htm BRHS Subject-Photo index, page M] {{webarchive|url=https://web.archive.org/web/20140413133057/http://www.burlingtonroute.com/docs/library/subphoto/m.htm |date=2014-04-13 }}, Burlington Route Historical Society, May 28, 2013.