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A kinky subject....
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[quote user="Modelcar"] <p><font size="4"></font></p><p><font size="4">...Yes, from what M C is saying on laying it to the cool side of the temp bracket sounds more reasonable to me....Seems, one would prefer have a "break" in the rail {and pulled apart a bit}, than a "kink" caused by the other side of the heat spectrum.</font></p><p>[/quote]</p><p>Yes one prefers the rail to break, because a pull-apart will usually be detected by the track circuit (inside signaled territory), setting the signals protecting that block to red. A kink will usually be detected by the next train, which will usually be unable to stop short.</p><p>By the way, the rail expands just the same with an increase in temperature whether it is constrained by anchors or clips, or not constrained and laying loose on the ground. Anchoring doesn't stop the physics. The difference is that when the rail is properly anchored or clipped, the steel goes into compression in the longitudinal direction only. The steel is still free to expand in the other two axes (vertical and horizontal) and it does so. Some of the longitudinal expansion that is constrained becomes horizontal and vertical expansion, and some of it becomes horizontal and vertical deflection between each anchoring point.</p><p>S. Hadid</p>
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