RMweb Gold Captain Kernow Posted August 6, 2012 RMweb Gold Share Posted August 6, 2012 Some detail images of some of the brand new bullhead points being installed in Exeter Riverside Yard, as part of the on-going refurbishment blockade there at the moment: A different point lever: I would add that all photos were taken under safe working conditions and with appropriate permissions during the course of a work-related visit. More images of the work being done in Riverside Yard can be found here - http://www.rmweb.co....from-riverside/ Link to post Share on other sites More sharing options...
RMweb Gold Brinkly Posted August 6, 2012 RMweb Gold Share Posted August 6, 2012 I'm sure a cleaver bod will be able to tell me this, but why are the sleepers wooden and not concrete? Regards, Nick Link to post Share on other sites More sharing options...
RMweb Gold PhilH Posted August 6, 2012 RMweb Gold Share Posted August 6, 2012 And why b/head? New old stock? Link to post Share on other sites More sharing options...
brossard Posted August 6, 2012 Share Posted August 6, 2012 Thanks for these CK, very interesting and will be useful when making pointwork. John Link to post Share on other sites More sharing options...
RMweb Gold Captain Kernow Posted August 6, 2012 Author RMweb Gold Share Posted August 6, 2012 I'm sure a cleaver bod will be able to tell me this, but why are the sleepers wooden and not concrete? Regards, Nick Have you ever had to fund a whole load of concrete sleepers and then had to lift them into position with a small gang of blokes?! Wood is still a perfectly acceptable and compliant material to use, especially in the context of a yard or sidings. Bullhead is being used because the renewal is on a 'like for like' basis, it's a yard, and as handpoints, they will be easier to operate. Link to post Share on other sites More sharing options...
buffalo Posted August 6, 2012 Share Posted August 6, 2012 The ballast is a very fine gravel in several of the earlier pics, but normal size in the last two pics. Is that also normal for a yard these days? What decides when you use one rather than the other? Nick Link to post Share on other sites More sharing options...
LNERGE Posted August 6, 2012 Share Posted August 6, 2012 Some detail images of some of the brand new bullhead points being installed in Exeter Riverside Yard, as part of the on-going refurbishment blockade there at the moment: Yet another design of soleplate. We had to have one made with the insulations to one side but drilled for an FPL casting. There appears to be no drawing on file for such an item any more. Link to post Share on other sites More sharing options...
RMweb Gold Brinkly Posted August 6, 2012 RMweb Gold Share Posted August 6, 2012 Have you ever had to fund a whole load of concrete sleepers and then had to lift them into position with a small gang of blokes?! I can't say I have, although I did build the dry stone wall in by garden, which was constructed out of a selection of river boulders from the river Tavy! (So did you help with the lifting...) Link to post Share on other sites More sharing options...
RMweb Gold The Stationmaster Posted August 6, 2012 RMweb Gold Share Posted August 6, 2012 And why b/head? New old stock? Some of it looks as if it is recovered rail that has been cleaned up and re-used. One of the contractors used to specialise in doing exactly that back in the 1970s and they're still in business although owned by a different group nowadays. We had a complete ladder of it installed on the upside at Westbury in 1975 and we had a lot of trouble with wear in the switches (shunting heavy axleload wagons being a local speciality in those days) so fingers crossed Link to post Share on other sites More sharing options...
trisonic Posted August 6, 2012 Share Posted August 6, 2012 Thanks, Capt. Interesting and informative thread. Ta for taking the time, Pete. Link to post Share on other sites More sharing options...
Godders Posted August 7, 2012 Share Posted August 7, 2012 Tim, next time you encounter one of those operating lever types, mind making a few shots from the actuating mechanism? I understand it works by having a compressed spring forcing the blades into their end position, but how one gets the "flip-flop" motion mechanically I'm puzzled. Electronically I'm fine (but electronics is my original occupation ) but mechanically: ??? TIA! The name on the Lever mechanism is Wynn Williams which turns out to be quite a name in railway switches and levers Check Out this site it may answer your question http://www.valleysignals.org.nz/track/springpoints.html Cheers Godders Link to post Share on other sites More sharing options...
Southernman46 Posted August 7, 2012 Share Posted August 7, 2012 ! The ballast is a very fine gravel in several of the earlier pics, but normal size in the last two pics. Is that also normal for a yard these days? What decides when you use one rather than the other? Nick As a general rule, laying S&C on 20mm chippings - makes it so much easier to maintain track geometry afterwards. The normal size top stone keeps it in the right place. In yards & sidings, there is a degree of providing suitable underfoot conditions for yard staff etc.....so the chippings are often used right up to the top of sleeper level. There is no standard design of concrete bearers for bullhead S&C - concrete is also extremely unmaintainable (bitter experience !) so timber would be the natural & sensible choice for locations such as this especially if hardwood timbers are used which will last for a very very long time. Link to post Share on other sites More sharing options...
Talltim Posted August 7, 2012 Share Posted August 7, 2012 New? It's all rusty! ;-) Link to post Share on other sites More sharing options...
RMweb Gold The Stationmaster Posted August 7, 2012 RMweb Gold Share Posted August 7, 2012 There is no standard design of concrete bearers for bullhead S&C - concrete is also extremely unmaintainable (bitter experience !) so timber would be the natural & sensible choice for locations such as this especially if hardwood timbers are used which will last for a very very long time. If you want some 'unmaintainable' (or definitely 'unreplaceable') concrete bearers have a look at the crossover just west of Teignmouth station - full length concrete bearers extending under both lines, with retaining walls alongside either cess, such as it is, almost on minimum structure clearance. the only way to get them out if they're ever damaged or need replacing is to lift the whole lot out or take off all the ironwork. Link to post Share on other sites More sharing options...
Guest jim s-w Posted August 7, 2012 Share Posted August 7, 2012 None of the s&c at new street is on concrete and some of it was new in 2004 (quite recent for track) Cheers Jim Link to post Share on other sites More sharing options...
RMweb Gold TheSignalEngineer Posted August 7, 2012 RMweb Gold Share Posted August 7, 2012 .......................... why are the sleepers wooden and not concrete? Why make things difficult when they don't need to be? Link to post Share on other sites More sharing options...
wagonman Posted August 18, 2012 Share Posted August 18, 2012 Are those lines track circuited? I only ask because the stretcher bars seem to have insulation breaks in them (just like ours!)... Link to post Share on other sites More sharing options...
RMweb Premium phil-b259 Posted August 18, 2012 RMweb Premium Share Posted August 18, 2012 Are those lines track circuited? I only ask because the stretcher bars seem to have insulation breaks in them (just like ours!)... Maybe all you can get these days are strechers with insulations pre fitted? Also I note they are not painted yellow (which has been a requirement since Grayrigg to aid crack detection) although given the points are within a yard I guess it doesn't mater. Link to post Share on other sites More sharing options...
Southernman46 Posted August 18, 2012 Share Posted August 18, 2012 Maybe all you can get these days are strechers with insulations pre fitted? Also I note they are not painted yellow (which has been a requirement since Grayrigg to aid crack detection) although given the points are within a yard I guess it doesn't mater. Correct they wouldn't - there is an entire NR standard (collating the various Letters of Instruction) devoted to the stretcher bar issue post Grayrigg - that gives the criteria speed, S&C type, Flexure etc.... requiring yellow strectchers to be fitted & maintained. Link to post Share on other sites More sharing options...
RMweb Gold Captain Kernow Posted August 20, 2012 Author RMweb Gold Share Posted August 20, 2012 Are those lines track circuited? I only ask because the stretcher bars seem to have insulation breaks in them (just like ours!)... Only a small part of the yard is track circuited, and I don't think that any of the recent relaying involved those parts. Link to post Share on other sites More sharing options...
RMweb Premium Mallard60022 Posted August 22, 2012 RMweb Premium Share Posted August 22, 2012 Cap'n these shots are brilliant for reference. Thanks you. P @36E Link to post Share on other sites More sharing options...
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