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|Single message by Martin Wynne Topic: Irregular switch-diamond|
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Jim Guthrie wrote:
What are the flat strips just outside the rails in the six foot on each side of the diamond?Hi Jim,
They are stiffeners attached to the ends of the timbers, to prevent the timbers moving apart or closing up.
It is important that the K-crossing wing rail knuckles don't move out of alignment with the moving point rails.
In a fixed K-crossing they are all bolted solid with spacer blocks, but obviously that's not possible with moving point rails.
In an ordinary switch, switch anchors do the job of keeping the moving point rails aligned with the stock rails. Because of the much steeper switch angles in a switch-diamond, such anchors would not be feasible.
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