Ron Heggs Posted August 9, 2015 Author Share Posted August 9, 2015 The first attempt failed - the pivot bearers soldered attachment points are not strong enough. Have now made the pivot bearers from sections of rail, which provide a greater area of attachment contact, and the cross-section is not prone to bending Second attempt build underway 1 Link to post Share on other sites More sharing options...
Ron Heggs Posted August 10, 2015 Author Share Posted August 10, 2015 .. and the 2nd attempt build appears to be working OK - A bit fuzzy - this is the revised pivot bearer fixed to the u/s of the running rail This is the depression bar with slots for the bar to drop down over the pivot bearer Two pivot rockers attached to the depression bar Note the fixing point extensions which act as stops to prevent the depression bar from rising above the running rail The rockers are fixed either side of the slot for the pivot bearer The depression bar in place adjacent to the running rail Temporary pivot in place Side view showing the depression bar in the dropped position Another seven pivot assemblies to build and fix to complete this rail section A counterweight bar will be fixed to the free ends of the pivot rockers It is envisaged that the depression bar will act upon a microswitch to give the appropriate signal to the operator's panel Link to post Share on other sites More sharing options...
robday12 Posted August 10, 2015 Share Posted August 10, 2015 (edited) I've heard of extreme sports before, but this is extreme modeling! Ron you are an inspiration to us all! Edited August 10, 2015 by robday12 Link to post Share on other sites More sharing options...
hayfield Posted August 11, 2015 Share Posted August 11, 2015 Ron Yet again I (and others) am amazed at the lengths you go to with your model. Very interesting just to keep up with this thread. THANKS Link to post Share on other sites More sharing options...
Ron Heggs Posted August 11, 2015 Author Share Posted August 11, 2015 Ron Yet again I (and others) am amazed at the lengths you go to with your model. Very interesting just to keep up with this thread. THANKS John I hope you don't get asked for one of these - they are extremely tedious to get all the parts identical and soldered precisely in place .. and just for the relaying of a signal which may be for operational use in a model. Of course this could be simulated by more up-to-date electronic sensors and a dummy representation. But why not model it if it can be done - I always like a challenge, however impractical it may seem Cheers Ron 1 Link to post Share on other sites More sharing options...
ozzyo Posted August 11, 2015 Share Posted August 11, 2015 Hello Ron, nice work as always, but I think that I may have used brass sections to get a finer look. Now the big question, how are you going to fit the chairs? As you now have a full depth depression bar with no room for the chairs on the inside. ATB OzzyO. Link to post Share on other sites More sharing options...
hayfield Posted August 11, 2015 Share Posted August 11, 2015 Ron If I do get asked I do have your RMweb address to pass on, I think on another thread I have every respect for modellers who go to these lengths Link to post Share on other sites More sharing options...
Ron Heggs Posted August 11, 2015 Author Share Posted August 11, 2015 Hello Ron, nice work as always, but I think that I may have used brass sections to get a finer look. Now the big question, how are you going to fit the chairs? As you now have a full depth depression bar with no room for the chairs on the inside. ATB OzzyO. Hi, Ozzy The builds so far were to prove the concept of buildability, and as you rightly point out chairs cannot be fitted to the running rail The design has been refined and simplified a little, and will employ some brass sections for the depression bar and the counterweight bar. Remaining brass items will be fashioned from scrap brass saved from etchings. A small section of each of the chairs will need to be removed to enable the depression bar to fall to the lowest possible point Will have to order the necessary brass sections from the UK Cheers Ron 3 Link to post Share on other sites More sharing options...
LNERGE Posted August 11, 2015 Share Posted August 11, 2015 1 Link to post Share on other sites More sharing options...
Grovenor Posted August 11, 2015 Share Posted August 11, 2015 A small section of each of the chairs will need to be removed to enable the depression bar to fall to the lowest possible point It only has to drop to where the wheel pushes it, ie flange depth. Regards Keith Link to post Share on other sites More sharing options...
Ron Heggs Posted August 11, 2015 Author Share Posted August 11, 2015 It only has to drop to where the wheel pushes it, ie flange depth. Regards Keith Flange depth does vary slightly for the RP25 standard and the older wheel dimensions, but shouldn't exceed 1mm Ron Link to post Share on other sites More sharing options...
Ron Heggs Posted August 12, 2015 Author Share Posted August 12, 2015 A few more track components from C+L, and the magnets from First4Magnets arrived in the post this morning Took a little time to test the magnets to achieve auto-decoupling - worked first and every subsequent time Both couplings released with the magnets set at 20mm apart Magnets fitted between sleepers Have cut another 1500+ ply sleepers, plus 75 x 4mm x 300mm strips from 1mm thk. ply for timbering. They are all out in the sun drying after staining With the exception of the check rail chairs, all the other C+L and Exactoscale items have been removed from the sprues and placed in their appropriate containers The next trackwork templot has been printed and placed on its foamboard section with the necessary double-sided tape. Now awaits the placement of the ply sleepers and timbers That's a job for tonight . 5 Link to post Share on other sites More sharing options...
LongRail Posted August 12, 2015 Share Posted August 12, 2015 Ron which size magnets are you using Link to post Share on other sites More sharing options...
Jim76 Posted August 12, 2015 Share Posted August 12, 2015 Hi Ron, I have been following your posts with interest. I am sadly too young to have experienced Central in operation but found the disused station fascinating and have fond memories of attending the inaugural exhibition in 1986. It is such a shame the station and Midland line couldn't have remained open. Your superb model certainly helps to keep the spirit alive. I was just wondering if you could please elaborate on the uncoupling system - I have never seen this method before yet looks so simple. Is it a propitiatory system or bespoke and do you intend to install it on all your sidings? The only issue I can see is with locomotives of differing lengths. How do you intend to get around this? I would be grateful to hear your thoughts. Cheers, Jim Link to post Share on other sites More sharing options...
ozzyo Posted August 12, 2015 Share Posted August 12, 2015 Hello Ron, sorry to be a pain but should the coaches Etc. not be on the other side of the point and clear of the fouling point so that the loco could run around the stock without the train having to be pulled back? I'm not sure of the workings at this station but in a lot of stations that had a middle road they would leave enough room for the loco to draw forward and move back passed the stock in the platform. OzzyO. Link to post Share on other sites More sharing options...
RMweb Gold pirouets Posted August 12, 2015 RMweb Gold Share Posted August 12, 2015 And can you show the hook you made for decoupling? Think I found the magnets as you can search by width and some Neodymiurn came up that look as though they would fit my need, but I will need to check as I am using Peco track. (Can I mention such a heathen substance in this thread ) Link to post Share on other sites More sharing options...
Ron Heggs Posted August 12, 2015 Author Share Posted August 12, 2015 Ron which size magnets are you using Hi, Gary The magnets are 20mm x 6mm x 1.5mm thick N42 Neodymium - 1.6 kg Pull (North Pole Upwards) Adhesive backed, Part Number F330NA-10, sold in packs of 10 Ron Link to post Share on other sites More sharing options...
Ron Heggs Posted August 12, 2015 Author Share Posted August 12, 2015 Hi Ron, I have been following your posts with interest. I am sadly too young to have experienced Central in operation but found the disused station fascinating and have fond memories of attending the inaugural exhibition in 1986. It is such a shame the station and Midland line couldn't have remained open. Your superb model certainly helps to keep the spirit alive. I was just wondering if you could please elaborate on the uncoupling system - I have never seen this method before yet looks so simple. Is it a propitiatory system or bespoke and do you intend to install it on all your sidings? The only issue I can see is with locomotives of differing lengths. How do you intend to get around this? I would be grateful to hear your thoughts. Cheers, Jim Hi, Jim Will do post detailing the system Ron Link to post Share on other sites More sharing options...
Ron Heggs Posted August 12, 2015 Author Share Posted August 12, 2015 Hello Ron, sorry to be a pain but should the coaches Etc. not be on the other side of the point and clear of the fouling point so that the loco could run around the stock without the train having to be pulled back? I'm not sure of the workings at this station but in a lot of stations that had a middle road they would leave enough room for the loco to draw forward and move back passed the stock in the platform. OzzyO. The magnets were placed in the locations shown during testing of the decoupling action - the final positions will be prior to to the fouling point, which will be three full carriage lengths from the buffer stops The turnout location was problem in later years as its distance from the buffer stops prevented Britannias using the middle road. 4-6-0's could just be accommodated Ron 1 Link to post Share on other sites More sharing options...
Ron Heggs Posted August 13, 2015 Author Share Posted August 13, 2015 A quick run through on the method for making the hook extensions for the couplings - Using a normal lightweight staple and a pair of taper point pliers form the 'square' hook and the flat fold, which will be used to wrap around the end of the drop part of the coupling The 'hook' fitted on the coupling. To ensure the 'hook' locates correctly a depression is filed on both sides at the end of the coupling. The flat fold is placed in the depressions and the end of the flat wrapped around, and fixed with superglue View showing the coupling and 'hook' in normal position .. and in the 'released' position. The 'hook' being attracted by a magnet set between the sleepers The couplings are normally made from a non-ferrous alloy, and are not affected by magnets. The staple used as a 'hook' is normally made from iron or steel and will be attracted by magnets By spacing the magnets equal to the distance between the 'hooks' on coupled rolling stock - which is approximately 20mm - then slow speed movement over the magnets will decouple the target stock This method allows for decoupling even on curved trackwork, as long as full width magnets are used As indicated in an earlier post the magnets which I have used are - 20mm x 6mm x 1.5mm thick N42 Neodymium - 1.6 kg Pull (North Pole Upwards) Adhesive backed, Part Number F330NA-10, sold in packs of 10 3 Link to post Share on other sites More sharing options...
RMweb Gold pirouets Posted August 13, 2015 RMweb Gold Share Posted August 13, 2015 Thanks Ron. Its does worryingly look like something I can manage so i'm going to add it to my jobs list. Link to post Share on other sites More sharing options...
Jim76 Posted August 16, 2015 Share Posted August 16, 2015 Thanks Ron, hope the sun is shining in España... Link to post Share on other sites More sharing options...
Ron Heggs Posted August 16, 2015 Author Share Posted August 16, 2015 Thanks Ron, hope the sun is shining in España... Hi, Jim Hope that there is enough detail for you Probably a little warmer here than in Melbourne at present Cheers Ron Link to post Share on other sites More sharing options...
Ron Heggs Posted August 18, 2015 Author Share Posted August 18, 2015 The second trackwork section, which is essentially identical to the first section, is well underway with some 15 hours expended so far. Needs the switch rails for the Y turnout filing and fixing to complete the track Then the wire droppers, etc. will be soldered to the appropriate rails Awaiting delivery of the brass sections for the depression bars Still have another two more identical trackwork sections to build, so plenty of work ahead 4 Link to post Share on other sites More sharing options...
Jim76 Posted August 19, 2015 Share Posted August 19, 2015 Hi, Jim Hope that there is enough detail for you Probably a little warmer here than in Melbourne at present Cheers Ron Yes, thanks Ron - much appreciated. Simple but effective - I may adopt that method. Has been a tad cold of late in Melbourne - I even had ice on my windscreen yesterday! Link to post Share on other sites More sharing options...
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