Pint of Adnams Posted June 21, 2010 Share Posted June 21, 2010 For those interested in the constituent railways of the LNER, investment in a copy (if you can lay your hands on one, or through your local library) of A Pictorial Record of LNER Constituent Signalling by A A MacLean, OPC 1983, ISBN 86093-146-3 will counter the significant GWR bias in the Wild Swan publication. Plenty of drawings of components and assemblies, as well as the different arms, posts and so on. Link to post Share on other sites More sharing options...
Grovenor Posted June 21, 2010 Share Posted June 21, 2010 p7 detection does not stop a signal lever being moved Maybe, but if the detection is not set you will have to pull pretty hard to break something when the wire goes tight. The detection is designed to stop the signal being pulled off, the lever will move but not very far. Regards Keith Link to post Share on other sites More sharing options...
RMweb Gold The Stationmaster Posted June 21, 2010 RMweb Gold Share Posted June 21, 2010 This one? Cheers Jan Sorry but somehow I missed this post originally - that is the one. Link to post Share on other sites More sharing options...
RMweb Gold The Stationmaster Posted June 21, 2010 RMweb Gold Share Posted June 21, 2010 Maybe, but if the detection is not set you will have to pull pretty hard to break something when the wire goes tight. The detection is designed to stop the signal being pulled off, the lever will move but not very far. Regards Keith The purpose of the detector is to stop the signal arm coming off if the points are not set to the correct tolerance. I can assure you from experience (personal and otherwise) that detection 'hanging-up' doesn't stop you pulling the signal lever, and depending on the wire run condition and umpteen other factors it doesn't necessarily stop you getting the lever right over - but it might well be something of a 'spongy' or 'hard' pull depending on what is happening in the wire run. In terms of 'breaking something' it all depends very much on equipment condition and the conscientiousness of the local Lineman/S&T Tech but there have been instances where signal wire pulleys have come off rotten timber beds (not on the Western of course ). Link to post Share on other sites More sharing options...
RMweb Gold beast66606 Posted June 21, 2010 RMweb Gold Share Posted June 21, 2010 It was easy to pull a lever when the detection wasn't aligned, the give away was the lever trying to throw you out of the box due to the tension in the wire ! Link to post Share on other sites More sharing options...
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