Tenmile

## DSP&P D.H.1 Mason Bogie

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The **Tenmile**, also referred to as the **Mason Bogie Tenmile**, is a 2-6-6T locomotive. It was added in The Coal & Power Update.

## Prototype

The locomotive's model and options are based on some of the various 2-6-6T Mason Bogie locomotives employed on the Denver, South Park and Pacific Railroad (DSP&P RR), the second-largest operator of the type.

### History

The Mason Bogie was an innovative design based on the Single Fairlie, manufactured by the American licensee of the Fairlie patent, William Mason. The articulated bogie of driving wheels, while initially difficult to resolve, resulted in a locomotive that could handle uneven track and sharp curves better than conventional designs. This made it well-suited for narrow gauge railroads like the DSP&P RR, and 88 of all 146 Mason Bogie locomotives produced were narrow gauge.

Five locomotives from the DSP&P RR are represented as prototypes in this section - No. 4 San Juan, No. 6 Tenmile, No. 7 Gunnison, No. 15 Breckenridge, and No. 24 Buena Vista. All were built in 1879 with the exception of No. 4 San Juan, which was built in 1878. These locomotives were part of a fleet of 19 2-6-6T Mason Bogie locomotives that would work on the DSP&P RR throughout its history.

The DSP&P RR was purchased by Union Pacific in 1880, but was allowed to run semi-autonomously. In 1885, most of the DSP&P RR fleet was renumbered and repainted in simpler black paint schemes, suited for coal-firing locomotives - all five prototypes can also be represented in post-1885 liveries.

By 1890, almost all of the 2-6-6T Mason Bogies had been sold. The one survivor was No. 24 Buena Vista (by that time No. 57), which was sold in 1902 to the Iowa State University. It remained on display in an increasingly worsening condition until it was scrapped in 1942 as part of the war effort.

### Recreation

#### No. 4 San Juan

To accurately recreate the No. 4 San Juan prototype as it operated prior to 1885, select the following options when purchasing the locomotive:

* **Number:** 4
* **Name:** SAN JUAN.
* **Smokestack:** 6 *or* 7
* **Headlight:** 1
* **Paint:** 3

#### No. 6 Tenmile & No. 7 Gunnison

To accurately recreate the No. 6 Tenmile or No. 7 Gunnison prototypes as they operated prior to 1885, select the following options when purchasing the locomotive:

* **Number**
	+ **No. 6 Tenmile:** 6
	+ **No. 7 Gunnison:** 7
* **Name**
	+ **No. 6 Tenmile:** TENMILE.
	+ **No. 7 Gunnison:** GUNNISON.
* **Smokestack:** 6 *or* 7
* **Headlight:** 1
* **Paint:** 1

#### No. 15 Breckenridge & No. 24 Buena Vista

To accurately recreate the No. 15 Breckenridge or No. 24 Buena Vista prototypes as they operated prior to 1885, select the following options when purchasing the locomotive:

* **Number**
	+ **No. 15 Breckenridge:** 15
	+ **No. 24 Buena Vista:** 24
* **Name**
	+ **No. 15 Breckenridge:** breckenridge.
	+ **No. 24 Buena Vista:** buena vista.
* **Smokestack:** 6 *or* 7
* **Headlight:** 1
* **Paint:** 2

#### Post-1885

To accurately recreate any of the above prototypes in their post-1885 states, select the following options when purchasing the locomotive:

* **Number**
	+ **No. 4 San Juan:** 41
	+ **No. 6 Tenmile:** 42
	+ **No. 7 Gunnison:** 43
	+ **No. 15 Breckenridge:** 51
	+ **No. 24 Buena Vista:** 57
* **Name:** (Same as Number)
* **Smokestack:** 6 *or* 7
* **Headlight:** 4
* **Paint:** 4

(NOTE: Given that the text does not change with the paint options, the text style is inaccurate for the post-1885 liveries - however, it is better than no text.)

(Another note: Since the 2 Year Anniversary update, the Tenmile now has six paint schemes instead of just five.)

## Gallery

Builder's photo of No. 4 San Juan at the Mason Machine Works.No. 15 Breckenridge, some time prior to 1885.No. 7 Gunnison, some time after being renumbered to 43 in 1885.A recreation of the No. 4 San Juan prototype in-game.A recreation of the No. 4 San Juan prototype in-game (as 41, post-1885).A recreation of the No. 6 Tenmile prototype in-game.A recreation of the No. 6 Tenmile prototype in-game (as 42, post-1885).A recreation of the No. 7 Gunnison prototype in-game.A recreation of the No. 7 Gunnison prototype in-game (as 43, post-1885).A recreation of the No. 15 Breckenridge prototype in-game.A recreation of the No. 15 Breckenridge prototype in-game (as 51, post-1885).A recreation of the No. 24 Buena Vista prototype in-game.A recreation of the No. 24 Buena Vista prototype in-game (as 57, post-1885).