Ron Heggs Posted November 29, 2012 Author Share Posted November 29, 2012 A couple of pics. of progress - The first four sets of cross-braces fixed to external bracings, and fourteen sets ready to go Close-up - off to my advanced Spanish lessons now Link to post Share on other sites More sharing options...
Ron Heggs Posted November 29, 2012 Author Share Posted November 29, 2012 Back from spanish lessons, and time to complete one half of the arch cross-braces - - the other half of the arch to be completed Link to post Share on other sites More sharing options...
Ron Heggs Posted November 29, 2012 Author Share Posted November 29, 2012 - and the last of today's builds The final 18 sets of cross-braces to complete the braces to the external bracings of the arch Link to post Share on other sites More sharing options...
jukebox Posted November 30, 2012 Share Posted November 30, 2012 Your ability to deliver such consistency so (seemingly) effortlessly is a credit to your skills, Ron! Cheers Scott Link to post Share on other sites More sharing options...
Ron Heggs Posted November 30, 2012 Author Share Posted November 30, 2012 Your ability to deliver such consistency so (seemingly) effortlessly is a credit to your skills, Ron! Cheers Scott Hi, Scott Thanks, much appreciated Still not enough fingers, or perhaps too big - use of tweezers a bit fiddly, but getting there all the same Cheers Ron Link to post Share on other sites More sharing options...
Ron Heggs Posted November 30, 2012 Author Share Posted November 30, 2012 Completed the cross-bracings to the external bracings - Close-up of bracings at the top of the arch - next the (36) internal bracings with their (170) cross-bracings Link to post Share on other sites More sharing options...
steve fay Posted November 30, 2012 Share Posted November 30, 2012 Wow, This alone would be the centre piece of any model layout. but combined with the other mammoth project, Just Wow I continue to watch in Awe. Link to post Share on other sites More sharing options...
Ron Heggs Posted December 1, 2012 Author Share Posted December 1, 2012 Starting the cross-braces to the internal arch bracings - Components for each internal bracing assembly Fix first cross-brace to one side of the centre of the bracing piece Fix the second cross-brace Rotate the workpiece 180o , and fix the remaining two cross-braces A few finished bracing assemblies The first internal bracing fixed in the arch The second bracing fixed in the arch These two bracings oppose each other at the arch apex - now to complete the remaining bracing assemblies and fix in place Edit: Replaced out-of-focus picture Link to post Share on other sites More sharing options...
Ron Heggs Posted December 3, 2012 Author Share Posted December 3, 2012 All 26 of the 4 set cross-braced internal bracings completed - Near end of arch - Five 5 set cross-braced internal bracings required to complete this end Far end of arch - Five 5 set cross-braced internal bracings required to complete this end - that makes ten 5 set cross-braced internal bracings required to complete this final arch structure Link to post Share on other sites More sharing options...
Ron Heggs Posted December 3, 2012 Author Share Posted December 3, 2012 One end of this last arch completed with the 5 set bracings - - now for the other end Link to post Share on other sites More sharing options...
Ron Heggs Posted December 4, 2012 Author Share Posted December 4, 2012 The third arch is now completed - Third & Second arches (third in front) Close-up of end of third arch Detail showing the 4 set & 5 set cross-bracings in the internal bracings - next is to produce the bridge abutment bases fitted to a baseboard Link to post Share on other sites More sharing options...
Ron Heggs Posted December 5, 2012 Author Share Posted December 5, 2012 It looks like I am going to have to scratch build the stonework on the bridge abutments, as suitable embossed material is not available to match the prototype - The basic stone blocks are 6mm x 3mm in 4mm scale The choice of media is plaster, clay or plastic - so a few trials and tests will be required Link to post Share on other sites More sharing options...
hymek2 Posted December 6, 2012 Share Posted December 6, 2012 Hi Ron, I have been marvelling at your amazing construction works for quite some time and may be able to help with an idea for the stonework. My father wrote an article for Model Railway Journal entilted "Stoned every night" which was published in magazine 103. If i rememer correctly (I should look it out really!) he cut strips of plasticard to the required height from slightly different thicknesses of plasticard for example a 6mm strip of 20, 30 and 40thou. Then cut these into the relevant stone widths. When laid onto the base wall individually the sizes were mixed up to give the different relief of the stones. When the glue had dried he then scraped the joints with a rounded scalpel blade with the blade facing towards the centre of the stone and the point in the mortar gap. This effect can also be varied to create different amounts of curvature on the individual stones. Its a bit time consuming, but if you can manage to cut and install all those structural braces it should be fairly straight forward for you! Hope this helps. Link to post Share on other sites More sharing options...
Ron Heggs Posted December 8, 2012 Author Share Posted December 8, 2012 Constructed the baseboard complete with blocks for the base of the abutments The central arch and deck fitted on the abutments Second arch fitted - The deck will straighten out when all the hangers are installed Third arch fitted - next the arch to arch cross bracings (horizontal & vertical) Link to post Share on other sites More sharing options...
Ron Heggs Posted December 8, 2012 Author Share Posted December 8, 2012 The first eight horizontal and two vertical cross-bracings between the arches - View back through arches - continue to completion of cross-bracings Link to post Share on other sites More sharing options...
N15class Posted December 8, 2012 Share Posted December 8, 2012 That is looking wonderful. I looks as though a train is not going to effect it at all. Link to post Share on other sites More sharing options...
Ron Heggs Posted December 8, 2012 Author Share Posted December 8, 2012 That is looking wonderful. I looks as though a train is not going to effect it at all. Hi, Peter I think the train loading test will be soon, although not on any track (I don't yet have any track components to construct a length of straight track, and I don't intend to use any proprietary track system) Cheers Ron Link to post Share on other sites More sharing options...
Ron Heggs Posted December 10, 2012 Author Share Posted December 10, 2012 Waiting for outstanding delivery of some styrene to complete the over-arch cross-bracing, so fixed the central arch suspension hangers and completed the deck plating - Plated the underside of one end of the deck at its the abutment - and then fitted two suspension hangers on the outer arches at approx. central positions, and loaded the bridge with two steam locos (Standard 9 2-10-0 & Standard 7 2-6-4) Test shows the hangers will be strong enough to support the deck and its intended loading Edited: for missing words Link to post Share on other sites More sharing options...
Horsetan Posted December 10, 2012 Share Posted December 10, 2012 Waiting for outstanding delivery of some styrene..... If anyone notices a shortage of some sizes of styrene strip, Ron's various threads might just be the reason why....... Link to post Share on other sites More sharing options...
Ron Heggs Posted December 10, 2012 Author Share Posted December 10, 2012 If anyone notices a shortage of some sizes of styrene strip, Ron's various threads might just be the reason why....... Everytime I place an order the retailer has to advise me that he needs to reorder to fulfil my order, so the delivery takes longer than normal But no doubt it would be just the same if went into the shop (if I was in the UK) I can understand that plastic strip is not necessarily a high demand item, so stocks are kept to a minimum - then along comes an oddball, someone like me Anyway, time is not a problem - I have plenty of items under construction Link to post Share on other sites More sharing options...
RMweb Premium Siberian Snooper Posted December 10, 2012 RMweb Premium Share Posted December 10, 2012 Hi Ron Have you consumed / used up the normal bridge test weights? SS Link to post Share on other sites More sharing options...
Ron Heggs Posted December 10, 2012 Author Share Posted December 10, 2012 Hi Ron Have you consumed / used up the normal bridge test weights? SS Unfortunately, my stock is very low at present. Although coming weekend should replenish it ready for the Xmas/New Year celebrations Will need to construct a harness of some form, as the deck is too narrow to hold any can or bottle An idea is forming - will be back with a possible solution Link to post Share on other sites More sharing options...
Ron Heggs Posted December 10, 2012 Author Share Posted December 10, 2012 A quick mock-up and test with two 500ml cans of cider - 1kg load No measurable deflection and all appears OK Will carry out a full blown test at weekend Link to post Share on other sites More sharing options...
RMweb Premium skipepsi Posted December 10, 2012 RMweb Premium Share Posted December 10, 2012 Looking at the bridge as an engineer Ron do you think it needed the third arch? Link to post Share on other sites More sharing options...
jukebox Posted December 11, 2012 Share Posted December 11, 2012 Because of the string harness, Ron, your fluid loading (above) appears a lot more concentrated (no pun intended!) than the BR Standard's - even if they had been the same mass. I'd suggest you could probably run a pair of K's whitemetal Garratts across and not overload your structure. Well done! Link to post Share on other sites More sharing options...
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