# 2-8-6T

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Locomotive wheel arrangement

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In the [Whyte notation](/source/Whyte_notation) for describing [steam locomotive](/source/Steam_locomotive) [wheel arrangement](/source/Wheel_arrangement), a **2-8-6** is a locomotive with a two-wheel [leading truck](/source/Leading_truck), eight [driving wheels](/source/Driving_wheel), and a six-wheel [trailing truck](/source/Trailing_truck). All 2-8-6 locomotives constructed have been [Mason Bogie](/source/Mason_Bogie_locomotive) [tank locomotives](/source/Tank_locomotive).

## Equivalent classifications

Other equivalent classifications are:

- [UIC classification](/source/UIC_classification): **1D3** (also known as German classification and [Italian classification](/source/Italian_classification))

- [French classification](/source/French_classification): **143**

- [Turkish classification](/source/Turkish_classification): **48**

- [Swiss classification](/source/Swiss_classification): **4/8**

In the [UIC classification](/source/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'**.

## Usage

Four Mason Bogies of this type were built for the [Denver, South Park and Pacific Railroad](/source/Denver%2C_South_Park_and_Pacific_Railroad); #25 *Alpine*, #26 *Rico*, #27 *Roaring Fork* and #28 *Denver*. They were [narrow gauge](/source/Narrow_gauge_railway) locomotives of 3 ft (914 mm) gauge. Two more went to the [Denver, Utah and Pacific](https://en.wikipedia.org/w/index.php?title=Denver,_Utah_and_Pacific_Railroad&action=edit&redlink=1), #10 *Middle Park* and #19 *Denver*. The DU&P sold one of the latter to the [Burlington and Northwestern Railway](/source/Burlington_and_Northwestern_Railway), a narrow-gauge affiliate of the [CB&Q](/source/CB%26Q) operating in [Iowa](/source/Iowa).[1][2]

## References

1. **[^](#cite_ref-1)** Burlington & Western, B&NW Narrow Gauge Branch Lines, [Burlington Bulletin No. 30](http://c-sng-discussion-forum.41377.n7.nabble.com/file/n14854/Bogie.jpg) [Archived](https://web.archive.org/web/20200612163412/http://c-sng-discussion-forum.41377.n7.nabble.com/file/n14854/Bogie.jpg) 2020-06-12 at the [Wayback Machine](/source/Wayback_Machine), Burlington Route Historical Society, 1994; page 6.

1. **[^](#cite_ref-2)** Mason Bogie loco 2-8-6T narrow gauge B&NW #1 (c1890), [BRHS Subject-Photo index, page M](http://www.burlingtonroute.com/docs/library/subphoto/m.htm) [Archived](https://web.archive.org/web/20140413133057/http://www.burlingtonroute.com/docs/library/subphoto/m.htm) 2014-04-13 at the [Wayback Machine](/source/Wayback_Machine), Burlington Route Historical Society, May 28, 2013.

v t e Steam locomotive wheel arrangements (Whyte notation) Single engine types 0-2-2 0-2-4 2-2-0 2-2-2 2-2-4T 4-2-0 4-2-2 4-2-4T 6-2-0 0-3-0 (monorail) 0-4-0 0-4-0+4 0-4-2 0-4-4T 0-4-6T 2-4-0 2-4-2 2-4-4T 2-4-6T 4-4-0 4-4-2 4-4-4 4-4-6 0-6-0 0-6-2 0-6-4T 0-6-6T 2-6-0 2-6-2 2-6-4 2-6-6T 4-6-0 4-6-2 4-6-4 0-8-0 0-8-2 0-8-4T 0-8-6T 2-8-0 2-8-2 2-8-4 2-8-6 4-8-0 4-8-2 4-8-4 4-8-6 6-8-6 0-10-0 0-10-2 2-10-0 2-10-2 2-10-4 4-10-0 4-10-2 0-12-0 2-12-0 2-12-2 2-12-4T 4-12-2 4-14-4 Divided drive and duplex engine types 0-2-2-0 2-2-2-0 2-2-2-2 2-2-4-0T 4-2-2-0 2-4-6-2 4-4-4-4 6-4-4-6 4-4-6-4 4-6-4-4 Articulated locomotives Fairlie, Meyer and Garratt types 0-4-0+0-4-0 2-4-0+0-4-2 2-4-2+2-4-2 4-4-2+2-4-4 0-6-0+0-6-0 0-6-2+2-6-0 2-6-0+0-6-2 2-6-2+2-6-2 4-6-0+0-6-4 4-6-2+2-6-4 4-6-4+4-6-4 0-8-0+0-6-0T 2-8-0+0-8-2 2-8-2+2-8-2 4-8-0+0-8-4 4-8-2+2-8-4 4-8-4+4-8-4 Articulated locomotives Mallet types 0-4-4-0 0-4-4-2 2-4-4-0 2-4-4-2 0-6-6-0 2-6-6-0 2-6-6-2 2-6-6-4 2-6-6-6 2-6-8-0 4-4-6-2 4-6-6-2 4-6-6-4 0-8-8-0 2-8-8-0 2-8-8-2 2-8-8-4 4-8-8-2 4-8-8-4 2-10-10-2 Articulated locomotives Triplex and other multiplex types 2-8-8-8-2 2-8-8-8-4 2-8-8-8-8-2 0-6-2+2-4-2-4-2+2-6-0 2-6-6-2+2-6-6-2 2-8-8-8-8-8-2 2-10-10-10-10-10-2 2-4-4-2+2-8-8-2+2-4-4-2 Articulated locomotives Engerth types 0-4-4T 0-4-6T 2-6-4 0-6-4T 0-6-4-0 0-8-4T 0-8-6T Geared locomotives Shay Climax Heisler Willamette Other notation forms: AAR Swiss UIC

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