Templot Club Archive 2007-2020
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posted: 10 Oct 2010 00:40 from: Martin Wynne
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Some interesting trackwork in this pic just posted on RMweb of a sharply curved double junction. On the left the double junction has a switch-diamond because of the severity of the curve, even though the angle is probably shorter than 1:8 and would have been OK for a fixed diamond in straight track. On the right the turnout in the yard has a couple of single-blade catch points within it acting as traps, and the curve is continuously check-railed. See: image #22907 regards, Martin. |
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posted: 10 Oct 2010 17:52 from: lippydavies click the date to link to this post click member name to view archived images |
Junction is actually the exit from the former Arley loco holding sidings around towards Arpley sidings. Line the 60 is coming from is known as Latchford and comprises 2 runround lines one of which was formally the Cheshire Lines route to Skelton junction shut in early 1980s now part of the Transpennine cycle route. Lee |
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posted: 10 Oct 2010 19:43 from: Jim Guthrie
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Martin Wynne wrote: On the left the double junction has a switch-diamond because of the severity of the curve, even though the angle is probably shorter than 1:8 and would have been OK for a fixed diamond in straight track.I would agree with that. I'm just in the process of rebuilding the diamond in a double junction on tight curves where the angles were technically alright for fixed crossings but I couldn't guarantee checking when I put a test chassis through the diamond. So the diamond is being re-built as a switched diamond. the fixed diamond was a fully interlaced one and I'm not sure whether the re-build can be interlaced. It's for a Caledonian layout and information about Caledonian track is rather sparse. I'm not sure if they would have installed a switched diamond. Jim. |
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