2-8-6
Encyclopedia : 2 : 28 : 286 : 2-8-6
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 2-8-6T tank locomotives of the Mason Bogie pattern. In the UIC classification, 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 3 ft gauge. Some were later sold to the Chicago, Burlington and Quincy Railroad.
| Steam locomotive types |
| Single engine types |
| 0-2-2 | 2-2-0 | 2-2-2 | 2-2-4 | 4-2-0 | 4-2-2 | 4-2-4 | 6-2-0 |
| 0-4-0 | 0-4-2 | 0-4-4 | 2-4-0 | 2-4-2 | 2-4-4 | 4-4-0 | 4-4-2 | 4-4-4 |
| 0-6-0 | 0-6-2 | 0-6-4 | 2-6-0 | 2-6-2 | 2-6-4 | 2-6-6 | 4-6-0 | 4-6-2 | 4-6-4 |
| 0-8-0 | 0-8-2 | 0-8-4 | 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 | 2-12-4 | 4-12-2 | 4-14-4 |
| Duplex engine types |
| 4-4-4-4 | 6-4-4-6 | 4-4-6-4 | 4-6-4-4 |
| Garratt (articulated) types |
| 0-4-0+0-4-0 | 2-6-0+0-6-2 | 4-6-2+2-6-4 | 2-8-0+0-8-2 | 4-8-4+4-8-4 |
| Mallet (articulated) types |
| 0-4-4-0 | 0-4-4-2 | 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 | 4-6-6-2 | 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 | 2-8-8-8-2 | 2-8-8-8-4 |
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