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Monday, March 10, 2025
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Kevin Morgan
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CP DS007 (Arvada)
Arvada, CO
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60 (Add a Comment)
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Moffat Tunnel (UP)
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BNSF
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BNSF 5826 knocks down the signal at CP DS007 at Arvada as it continues east, moving from the main track to Main 1. The switch here at Arvada is a high speed switch. It actually has to switch motors as it has a moveable point frog. Rather than a solid chunk of steel, the frog point moves similar to a switch point. The oil train here is taking the non-diverging route.
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Sunday, November 3, 2024
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Kevin Morgan
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CP DS007 (Arvada)
Arvada, CO
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81 (Add a Comment)
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Moffat Tunnel (UP)
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Union Pacific
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Are you familiar with a moveable point frog as it related to a switch (turnout)? Most switches have a frog that is a single piece of steel with groves for wheel flanges. However, in situations where the turnout needs to support higher speed and/or it needs to support heavier trains, railroads will sometimes install a moveable point frog. Similar to the standard switch point, a moveable point frog requires a second turnout motor and it moves the frog back and forth, create a far smoother (and safer) turnout for heavier trains at higher speeds. This particular moveable point frog is located at CP DS007 (Arvada). When UP added a second main track between C&S Junction and Arvada, the added this turnout for coal trains.
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Sunday, June 19, 2011
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Kevin Morgan
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CP DS007 (Arvada)
Arvada, CO
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1379 (Add a Comment)
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Moffat Tunnel (UP)
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Union Pacific
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At Lamar Street, you can clearly see the grade work that has been done by UP to facilitate the addition of a second main track. It appears as though this track may converge with the existing track at CP 7.5. The new track will likely be used for holding coal trains that need to be recrewed between Lamar and Tennyson. The new track will allow DS-86 to continue to run trains around the tied down train.
Note: Apologies for poor picture quality - picture taken with my iPhone 4
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