peanuts Posted December 31, 2020 Share Posted December 31, 2020 after seeing some pics of my old box crows nest junction and the trackwork outside i wondered has anybody ever modeled a set of switch diamonds ? Link to post Share on other sites More sharing options...
RMweb Premium Ian Smeeton Posted December 31, 2020 RMweb Premium Share Posted December 31, 2020 Been done a few times, hunt down 'this is Euston' to see it done in 2mm FS by @cornish trains jez Regards Ian Link to post Share on other sites More sharing options...
great central Posted January 1, 2021 Share Posted January 1, 2021 Our old club layout Skipley had one, a fictional layout based on the Skipton/Keighley area (if you hadn't guessed) the only way to get a reliable diamond crossing on a curve. Built in the mid 80s it was on show for many years at the HMRS building at Butterley, now in private ownership. Link to post Share on other sites More sharing options...
RMweb Premium Michael Edge Posted January 1, 2021 RMweb Premium Share Posted January 1, 2021 Nearly all switch diamonds on the huge Carlisle layout - because it's built exactly to scale including the crossing angles it was decided that they would be safer, even in EM (P4 fixed diamonds would have been fine). Link to post Share on other sites More sharing options...
RMweb Gold Enterprisingwestern Posted January 1, 2021 RMweb Gold Share Posted January 1, 2021 Pudsey Junction on Wibdenshaw has them. Mike. 3 1 Link to post Share on other sites More sharing options...
gordon s Posted January 1, 2021 Share Posted January 1, 2021 (edited) They are very easy to build and he running quality is very smooth with he wheels fully supported. Built several over the years and the current approach to ET station has one in place. Totally reliable and another fan here....... Two Tortoise motors mounted back to back provide the switching. Edited January 1, 2021 by gordon s 2 Link to post Share on other sites More sharing options...
RMweb Premium Michael Edge Posted January 1, 2021 RMweb Premium Share Posted January 1, 2021 The ones on Carlisle have flexing switch blades which are relatively short and need a fair bit of power from the Tortoise point motors to hold them over - I notice that Wibdenshaw has loose heel switches. Link to post Share on other sites More sharing options...
RMweb Gold Enterprisingwestern Posted January 1, 2021 RMweb Gold Share Posted January 1, 2021 2 minutes ago, Michael Edge said: I notice that Wibdenshaw has loose heel switches. Built by Kenny Rogers. Mike. 2 Link to post Share on other sites More sharing options...
RMweb Gold ikcdab Posted January 1, 2021 RMweb Gold Share Posted January 1, 2021 Yes easy to build, easier than a fixed diamond. I have one on my layout (see thread below). Totally reliable. There is also a topic over on templot forum with a useful drawing. Link to post Share on other sites More sharing options...
Andrew1974 Posted January 2, 2021 Share Posted January 2, 2021 On 01/01/2021 at 08:00, Enterprisingwestern said: Pudsey Junction on Wibdenshaw has them. Mike. Interesting to see fixed and switched diamonds next to each other. Why might this be the case? Link to post Share on other sites More sharing options...
gordon s Posted January 2, 2021 Share Posted January 2, 2021 Probably related to the crossing angle. From memory Templot automatically changes from a fixed to switched crossing once you go beyond a 1:7 crossing angle. 1 Link to post Share on other sites More sharing options...
RMweb Premium Kris Posted January 2, 2021 RMweb Premium Share Posted January 2, 2021 How common are these in the wild? Link to post Share on other sites More sharing options...
RMweb Gold Oldddudders Posted January 2, 2021 RMweb Gold Share Posted January 2, 2021 1 minute ago, Kris said: How common are these in the wild? Not common, but used as required by geometry and/or linespeed. I always liked the term 'moveable elbows'. 1 Link to post Share on other sites More sharing options...
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