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... topic: 1175 Switch-diamond- early FB at Bilton Junction posted: 22 Jul 2010 16:12 from: Martin Wynne 2_221106_110000000.jpg photo by Mick Nicholson Switch-diamond in early FB track at Bilton Junction- clamped out of use. Photo kindly sent by Mick Nicholson. Thanks Mick. Parts of Templot Club may not function unless you enable JavaScript (also called Active Scripting) in your browser. Templot Club> Forums> Prototype pics> Switch-diamond- early FB at Bilton Junction about Templot Club Templot Companion- User Guide- A-Z Index Templot Explained for beginners Please click: important information for new members and first-time visitors. indexing link for search engines back to top of page Please read this important note about copyright: Unless stated otherwise, all the files submitted to this web site are copyright and the property of the respective contributor. You are welcome to use them for your own personal non-commercial purposes, and in your messages on this web site. If you want to publish any of this material elsewhere or ...
... as for fixed K-crossing diamonds. The two sets of moving switch blades at the centre always move together, in opposite directions: switch_diamond_10bh.jpg switch_diamond.jpg Notice that in a flat-bottom switch-diamond (lower photo) the switch tips (points) are carried on two separate timbers. In a bullhead switch-diamond (upper drawing) both switch tips share a common wider centre timber. Here is a switch-diamond in early FB track at Bilton Junction, clamped out of use. Photo thanks to Mick Nicholson: 2_221106_110000000.jpg Here is an excellent picture from Mick Nicholson showing a flat-bottom double-slip with movable K-crossings. As one switch blade opens, the other closes. You can see that this doesn't affect the provision of the slip roads in the other rails: fb_movablek_dslip.jpg© thanks to Mick Nicholson Using movable K-crossings will give you very much more reliable running at flat angles, and they are much easier to construct because you don't have to find room for the K-crossing check rails. The only downside is ...
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