RMweb Premium Izzy Posted July 19, 2020 Author RMweb Premium Share Posted July 19, 2020 8 hours ago, Nick Mitchell said: I missed out on the 309s. I went up to Essex university in October '94, not long after they'd gone. Ironically, I'd occasionally glimpse one of the survivors round South Manchester when I was travelling home by train for holidays. The layout really captures the atmosphere of St Botolph's as I remember it from the late 90s / early 00s, and evokes happy memories. For me, the class 312s hold the fondest memories. When I was commuting into London from Wivenhoe, on the way home I'd try and time it so that I could catch the 12 car set at Liverpool Street that was diagrammed through to Clacton at that time. More often than not, I would sit in the dark on the fold-down seat inside the luggage cage in the brake coach. Nice and quiet so I could work on my PhD thesis until the battery of my laptop ran out... Pleased it captures the feel of St Boltophs to others besides myself. It’s nice to think I’ve got it right, so thanks. Perhaps it’s just me, but having ridden on the 309’s from their inception I believe they were at their best and most comfortable pre-refurbish, especially in a compartment, the later seating, like later units, being harsher along with the ride. Sadly of course the 312’s have also now gone. All that mostly trundles past the house these days - although Tornado did steam past a few times last year - are 321’s. When the new 720’s will appear I have no idea. Must just keep looking out the window I suppose...... Izzy 1 Link to post Share on other sites More sharing options...
RMweb Premium Izzy Posted July 19, 2020 Author RMweb Premium Share Posted July 19, 2020 11 hours ago, railtec-models said: Nice job. If you're doing more then it may save you time (and sanity) to know that I'll be making a parallel 2mm offering that gives you any EMU set number, matching side vehicle numbers, depot code and data panel already made up: Here's what the 4mm looks like and the 2mm will be the same: https://www.railtec-models.com/showitem.php?id=2251 The set and vehicle numbers can be any colour, the vehicle numbers with/without prefix of choice, and where the set numbers are "quirky", c.f. 309s and 501s then I make them to suit too. The white lining is already available. Just thought it may be of interest as if I have resource to make modellers' lives easier then I will. Thanks for the info Steve. I'm sorry I didn't think to check what you had before doing them, might have saved me a bit.. Whether I have the capacity in me for another EMU is moot. I would like a 302 and/or 308, but having to produce at least 4 coaches for these is where it can become tiring to do let alone sourcing the parts in the first place. A loco by contrast is a smaller chunk to tackle, and I have plans for a few more of these sometime... perhaps... At present finishing Priory Road and doing some other different projects is my main focus. Then we'll see. Izzy 1 Link to post Share on other sites More sharing options...
RMweb Gold TomE Posted July 23, 2020 RMweb Gold Share Posted July 23, 2020 The 309 looks superb! Tom. 2 1 Link to post Share on other sites More sharing options...
BusDriverMan Posted August 9, 2020 Share Posted August 9, 2020 (edited) Amazing thread Izzy! Two things I found inspiring in particular - the folding integral sector plate, and the motor bogie. I think I have some of those motors, bought for another purpose and unused. Tempted to plan a similar layout based on nearby Kirriemuir, a fictional version that was still open in the 70s and served by blue diesels. Should fit well with living in a rented one-room flat. Those 309s are incredible! I have a minor nitpick - should the intermediate ends retain side-buffers? I think they were omitted. edit: found a photo in amongst all the 3/4 views of the driving ends: Are the tantalum stay-alive units off-the-shelf or DIY? On 18/07/2020 at 23:09, railtec-models said: Nice job. If you're doing more then it may save you time (and sanity) to know that I'll be making a parallel 2mm offering that gives you any EMU set number, matching side vehicle numbers, depot code and data panel already made up: Brilliant! Any chance you could do the same for DMUs in N / 2mm? Edited August 9, 2020 by BusDriverMan Link to post Share on other sites More sharing options...
RMweb Premium Izzy Posted August 10, 2020 Author RMweb Premium Share Posted August 10, 2020 Pleased you find my thread interesting and useful and given you ideas for a layout. You're quite right about the internal buffers. How I missed not removing them I don't know. Something seemed not quite right but I couldn't nail it down, so many thanks for spotting it. This is of course an issue with using RTR bits. Often as much needs removing and/or replacing as adding on..... The stay-alives are home made using parts sourced off e-bay so they are quite cheap to make, a couple of pounds max, but also can be configured to suit the space available. Generally I find, having done a few now ( about a dozen), is that a pack of 3/4 220uf Tantalums, 660/880uf are enough for my needs of keeping a loco running smoothly when all else has been honed to suit. I aim to have good running on DC with DCC just being a particular control system added afterwards but stay-alive capabilities are certainly an added bonus. Izzy 1 Link to post Share on other sites More sharing options...
RMweb Premium Izzy Posted September 9, 2020 Author RMweb Premium Share Posted September 9, 2020 (edited) Turning things around…. I often think that some layouts are never really finished and tend instead to evolve with use. In common with many others such as the late Peter Denny, whose work has guided and inspired me since I first started modelling, I have often found myself altering and re-building layouts based on the experience of using them. Either adding bits or making alterations, mostly minor but sometimes major. A layout built in another scale some years back when I got stuck moving forward with 2mm has been re-built four times now and bears little if any resemblance to how it was originally. Despite the initial decision that led to the building of Priory Road, not expecting it to be anything other than a stop-gap layout until I could produce something better, it’s turned out to be so much more than I envisaged that I now have no intention of scrapping it. Indeed it’s become clear that in many respects it’s ideal for me, satisfies a great deal of what I wanted to achieve, and will be in use ad infinitum, although it might find another longer term project of similar overall size being used alongside it at some point when, or rather if, that eventually gets built. But whether Priory Road stays exactly the same as now is another matter, for as it has been used one aspect that has already been found wanting is the sector plate. Not that it doesn't work as intended, but rather that I have found it restrictive to use as it stands. How you may ask? Well, it’s fine with the type of train that stays as a single unit, a dmu/emu say, that just shuttles in and out. And no problem with one which makes an appearance and is changed once back in the fiddle to be replaced with another. Where the stock gets removed and replaced. But there are other situations where it gets awkward. Or should I say, not as simple and flexible as it could be. The first instance is two dmu’s. As it only has five roads putting two on one is space saving since they are only half a length each so can fit easily. But here’s the thing. Only one can be used unless both are used at the same time, one after the other, because of course one traps the other if not. Another instance is loco hauled stock of any type, passenger, parcels, goods. Once back in the fiddle the loco needs taking off and putting back on the other end even if the same train will be going out again without any other changes. And I don’t know about anyone else but I find it a chore trying to rail stock in the first place. Slowly I began to consider that I should have done what I had thought about when I first built it, make it rotate. So a turntable sector plate if it could be described as such. I had in the end shied away from this because I thought making it fold up was enough of a challenge which I wasn’t sure I could make work satisfactorily, and getting it to rotate as well was just a step too far to contemplate at the time. Now that it’s been used a fair bit, has proved workable and reliable, going that bit further seems not quite so unobtainable. Indeed, adapting what already exists as a know entity seemed less daunting as time went by. Especially as reverting back if it all went pear-shaped appeared quite feasible and helped remove the fear of wrecking it altogether. Actually, because it has all been made from mount board, adding bits can be far easier than with other construction materials. So the end stop was cut off, a scalpel through the glue joints, a slow and carefully done job. Followed by two double layer curved sections being added to provide the undercut end that slides around and topped with cork to match the rest. The tracks this end were then lifted for about 5” and new sections laid which mated up with the two exit tracks, needing to be curved to do so, the previous ones all being straight this end. More K&S tube allows alignment and electrical connection the same as the original end. In order to provide stop blocks at both ends the system I have seen used by many other modellers with turntable fiddle yards has been added, again produced out of mount board. Two hinged ‘U’ sections that can be folded over as required to block just one or both ends, the latter as a safety measure when rotating the unit so stock doesn’t run off one end or the other if loose. This rotating feature does need a bit more room to operate, that the layout has to be further away from any rear obstruction, wall etc, but I don’t have to use it if I don’t want or need to as it otherwise works exactly as before. So the best of both worlds. The only aspects I have to watch are that it can only be folded up when one way around due to the way it is built and pivots, and that when turned the stock and locos will be the opposite way around to before. Neither is a problem for me as I don’t have any stock that needs to be used in a particular direction, such as if single ended couplings are used, and I also use DCC so direction is fixed. Forward is forward whichever way a loco is facing. Izzy Edited August 14, 2022 by Izzy restore images 11 1 4 Link to post Share on other sites More sharing options...
richbrummitt Posted September 9, 2020 Share Posted September 9, 2020 A thought whilst reading the above post, specifically the mention of experiencing difficulty railing stock: Adding some board to infill the track like tramway (but without inner rails) both in the 4’ and between tracks may be helpful for railing stock. If there are only gaps for where the wheels should be then the wheels should go in the gaps i.e. onto the rails. 2 1 1 Link to post Share on other sites More sharing options...
Caley Jim Posted September 9, 2020 Share Posted September 9, 2020 1 hour ago, richbrummitt said: Adding some board to infill the track like tramway (but without inner rails) both in the 4’ and between tracks may be helpful for railing stock. If there are only gaps for where the wheels should be then the wheels should go in the gaps i.e. onto the rails. That's exactly what I have done with my cassettes, using strips of card to infill. All you have to do is give the cassette a gentle shake and the flanges of the wheels (mostly) fall into the slots. Jim Link to post Share on other sites More sharing options...
RMweb Premium Izzy Posted September 9, 2020 Author RMweb Premium Share Posted September 9, 2020 (edited) Interesting thoughts about the railing. I actually added fill-ins a while back along with strips on the outside. This was in black plasticard so might not show up too well in this current shot. It has helped a lot but some stock still proves problematic at times. Part of the problem is it must be below rail head height for current collection and cleaning. I'm no doubt a bit cack-handed as well! Izzy Edited March 31, 2022 by Izzy 3 Link to post Share on other sites More sharing options...
Caley Jim Posted September 9, 2020 Share Posted September 9, 2020 On my cassettes the running surface is the aluminium angle, so there is no need to infill on the outside. In between the card is up to just under rail height, so the only place for the wheel flanges to go is into the flangeway. Jim Link to post Share on other sites More sharing options...
RMweb Premium Izzy Posted September 12, 2020 Author RMweb Premium Share Posted September 12, 2020 I did think about using flat brass section as CF but rather lost interest when the cost involved became clear for the size and depth needed. I wonder if flat aluminium strip would work? Something else to think about. Izzy Link to post Share on other sites More sharing options...
RMweb Premium Izzy Posted October 25, 2020 Author RMweb Premium Share Posted October 25, 2020 (edited) As Priory Road has been put away in it's slumber cupboard for the winter as is my usual practice due to the strains of seeing things in the darker months with my poor old aged eyes I thought I should update on it's current state and other goings on. Not being happy with the rear retaining wall even after the last revision when it was altered to be of a rising height I have rebuilt it again. This was a bit more radical in that I removed it completely, trimmed it's overall height by another 5mm so the end behind the station buildings matched their height to the eves, and then replaced it but 5mm away from the backscene. I stuck some foamcore and mountboard spacing bits here so I can, if I wish, perhaps stuff a bit of foilage down there should this seem a good idea. Poking out over the top. I'm rubbish at scenery so it will be another test and see what results affair. I'm unsure whether it will work. We'll see. This work doesn't sound much but has made a very considerable difference which I'm afraid the rather poor pop shots don't really show too well. But I'm not going to disturb the layout just to take some more so they'll have to do, so apologies. Perhaps next spring it will look better....! A while back I was fortunate to acquire a loco I had long thought about getting, a Farish Ivatt 2MT. Two of these were allocated to Colchester for nearly all of their lives and it allows me to push the timescale envelope of Priory Road a bit wider, to the last days of steam, when steam, diesel, and electric traction all rubbed shoulders around North East Essex, between 1958-1961. Having converted this loco to 2FS via Nigel Hunt's very nice conversion etches allied to the 2mm SA bits for the newer Farish locos, bearings, muffs, etc, I though it might be a rather nice idea to also have a N7/3. one of the very last steam classes allocated to Walton-on-Naze. When they were withdrawn the Class 15's took over for a short while - on the passenger trains - until the electrics finally started, so it seemed logical. Anyway here's how far I have got. The chassis runs and just needs some details, brake gear and so on, while the body is part done. The decoder and stay-alive are packed into the coal bunker but attached to the chassis so it can run without the body for test purposes. Again work will resume in the spring unless the winter months prove to have some days of decent light and I am not engaged on other projects. Turning some boiler fittings is something I haven't done in a while so I am looking forward to when I do get on with it. I have to say the new mk5 wheels are very nice. I had no problems soldering in the crankpins. I did use the flanged ones and countersunk the hole at the rear to flood solder in to retain them though. Izzy Edited March 31, 2022 by Izzy 12 6 Link to post Share on other sites More sharing options...
justin1985 Posted October 26, 2020 Share Posted October 26, 2020 On 25/10/2020 at 19:35, Izzy said: This looks amazing Izzy! Are the body parts fretted out by hand? Does the trailing axle pivot between narrowed frames somehow? J 1 Link to post Share on other sites More sharing options...
RMweb Premium Izzy Posted October 26, 2020 Author RMweb Premium Share Posted October 26, 2020 Thanks Justin, it is coming on quite well I think. I should mention the body parts are just sitting on the footplate for the shots I took. It was to check the chassis with the stay-live/decoder pack could slide up inside okay. This might surprise but I have never used a fretsaw in my life for anything, metal or wood. It’s just 5 & 10 thou brass sheet mainly cut with a scalpel or started with drilled holes and then finished to size with files. My methods are the result of being mostly self taught and having to do things in early days with just the most basic of tools in the simplest way, which I have just stuck with as they work for me. The trailing axle is a pony truck, as was the prototype. The N7/1’s (later to be N7/4), had radial trucks combined with sideplay in the leading drivers to cope with curves, but the later build N7/2’s & N7/3’s had pony trucks alone instead. Trying to keep it simple I did build the chassis originally with just a fixed axle in the frames, narrowed as per the real ones to give as much sideplay as possible, but the lack of the wheels taking up an angle caused it to derail on radii much below about 30”. So a re-build with the pony truck became a necessity. You live and learn. I’ll try and find a few more shots to show things. Izzy 1 Link to post Share on other sites More sharing options...
justin1985 Posted October 26, 2020 Share Posted October 26, 2020 1 hour ago, Izzy said: Trying to keep it simple I did build the chassis originally with just a fixed axle in the frames, narrowed as per the real ones to give as much sideplay as possible, but the lack of the wheels taking up an angle caused it to derail on radii much below about 30”. So a re-build with the pony truck became a necessity. You live and learn. I’ll try and find a few more shots to show things. Izzy Many thanks - that's good to know. I've got a scratchbuilt N7 body that I found being sold without provenance on eBay several years back. It scales out nicely and is more or less complete, and seems to be made from tinplate or something like that. Trying to work out what to do about the trailing axle is one of the things that has kept it at the back of the drawer so far. J Link to post Share on other sites More sharing options...
RMweb Premium Izzy Posted October 27, 2020 Author RMweb Premium Share Posted October 27, 2020 (edited) On 26/10/2020 at 23:41, justin1985 said: Many thanks - that's good to know. I've got a scratchbuilt N7 body that I found being sold without provenance on eBay several years back. It scales out nicely and is more or less complete, and seems to be made from tinplate or something like that. Trying to work out what to do about the trailing axle is one of the things that has kept it at the back of the drawer so far. J Yes, when I saw that I thought it was a lucky find. Okay, I've found a couple of shots which might help - or not as the case may be....! The chassis is my normal arrangement of bearings slotted to allow the wheels to drop out, and give a bit of downward movement to aid track holding and current collection. The narrowing of the frames isn't actually that much, but looks more. The pony truck was made of a 'T' section with two L shapes cryno'd on for the axles halves - simple insulation. Simple holes too, no bearings. I doubt the loco will get enough use to wear them much. It was all nip and tuck using the smaller 2.3mm muff, getting the clearance so it rotated freely but didn't push the top height of the truck too far. Bearings would have needed more room. I did have to add a simple spring to keep it from riding up though. A bit of bent brass shim trapped between the truck and the chassis spacer to which it is attached/pivots. The bolt is also the rear chassis bolt. Here's another shot when I was tack soldering the body for clearance checks which shows the relationship. The chassis and motor drive arrangement was chosen so that it both allowed drive off the middle axle, which I always prefer where possible (evens out coupling rod forces), and meant the motor part protruding into the cab could be kept as low down as possible, well below cab window height and hopefully unseen once a backplate is added on the upper bit and a crew positioned either side. Izzy Edited March 31, 2022 by Izzy 6 2 9 Link to post Share on other sites More sharing options...
RMweb Premium Izzy Posted November 15, 2020 Author RMweb Premium Share Posted November 15, 2020 (edited) Steam days…. Priory Road has turned out to be much better than I expected not only in terms of how it looks and works but also in how flexible it is in what I can run on it. Originally the aim was to run stock for the BR green diesel era which has slowly expanded to cover the later BR Blue period, with of course the ability to run them together given the quite long transition period between the two. This is useful given the amount of stock I have ended up with as a result of the initial desire over quite some years to have a circular layout, and the subsequent time and effort spent collecting sufficient stock to use for this now shelved project. At some stage I will have to dispose of some of it as it is now far more than I need or want. However, despite this situation I recently obtained a model of a locomotive that I had considered getting for a long time, a Farish Ivatt 2-6-0 2MT. This was not only as a fond remembrance of some of the first N gauge locos I bought when I started in 2mm back in the early 1970’s, a pair of Minitrix Ivatt 2-6-0’s, but also and mostly because a couple of these locos were allocated to Colchester from new. This was from the batch produced at Darlington in 1951, three, 46465/66/67 going to Cambridge, and two, 46468/69 to Colchester. These latter two spent almost their entire lives in the area (as did the other three), working on the branches to Clacton/Walton and Harwich along with the Stour and Colne Valley lines as far as Cambridge and Bury St Edmunds. They moved to Parkeston in the late 50’s when DMU’s and EMU’s became the norm around Colchester but could still be seen anywhere around the area of North East Essex at times. However there was a period after the Clacton/Walton/Colchester area OHLE was erected but before the EMU’s entered service when steam locos still provided the motive power and could be seen hauling trains alongside DMU’s and diesels. Mostly these were B1’s, B17’s and K1’s besides the N7’s at Walton, all locos moved out of London after electrification to secondary routes and duties. But the 2MT’s were also used. So when a loco became available, one that had started to be converted to 2FS and with all the parts needed to complete, it seemed a nice idea to get it and run a ‘before the EMU’s’ sequence on PR. The Farish 2MT is a nice model. As with most of the recent ones it’s a world away from those of past days such as the Minitrix 2MT’s good though they were at the time. Converting it to 2FS using Nigel Hunt's conversion etch along with the 2mm association parts seemed to be a nice and different challenge to those I normally do these days, especially as I hadn’t played around with a walchaerts motion loco for some considerable years, and certainly not in 2mm. Nigel supplies full instructions with the etch and these helped no end in making the replacement valve gear and fitting it. I’m not sure I could have done it without them to guide me. However, I changed how some parts were joined/converted and the order in which things were done in places where I found it a bit of a struggle. The result is without doubt worth the effort though and I thank Nigel for producing the conversion. Looking at the soon to arrive Farish 8F I wonder if the same kind of conversion would be equally beneficial, if it could be produced, for those that would fancy one. Anyway, I thought that some details of the 2MT conversion might be of help to others and especially with regard to the alternative aspects I used. However, as I have a thread detailing conversion of the Farish Jinty & 4F to 2FS and DCC I thought it might be handy to add it there, which I hope to do as soon as I am able. Here’s the link: https://www.rmweb.co.uk/community/index.php?/topic/82934-farish-jinty-4f-2fs-dcc-with-stay-alive-also-ivatt-2mt/page/3/&tab=comments#comment-4195339 So I’ll just add a couple of shots of it at the present time here. It’s not finished yet as is probably quite obvious, the loco arrived in LMS livery which has been removed, and it awaits BR mixed traffic livery and numbering when I can find suitable transfers. Fox seem to produce the only lining available so it will probably wait until the N7/3 I am making also needs doing, although I have mooted making my own ‘one piece’ ones that could just be applied in one go. I might try that first since they wouldn’t have to be absolutely perfect. Most loco shots I can find of both these locos around North East Essex show them to be reasonably clean but the lining isn’t highly visible, mostly worn and covered in a dusting of everyday grime at the end. It’s a good get-out clause anyway! Izzy Edited March 31, 2022 by Izzy 15 1 Link to post Share on other sites More sharing options...
RMweb Premium Popular Post Izzy Posted July 12, 2021 Author RMweb Premium Popular Post Share Posted July 12, 2021 (edited) Priory Road has had a bit of a re-make. Gone is the integral backscene behind the retaining wall and by the station buildings. I had previously cut down the rear retaining wall so it went up in steps rather than at a constant height to try and improve things. Part of this further work was also done to allow me to operate it from anywhere around it rather than just from the original front. I like the alternate view from the ‘back’ as was. It’s also easier to operate from here as regards the manual uncoupling I use, often catching the OHLE when doing so from the front. So in conjunction with this the DPDT slider switches controlling the points have also gone, being replaced by the hacked servos I have been using in more recent times, while a small hand held switch control box that plugs in now allows me to work the points and signals from any position. There is a measure of simple electrical interlocking now fitted in conjunction with this, power routing to the hacked servos. This mostly uses the spare capacity available from the DPDT’s in the switch box alongside a micro-switch on the layout when I ran out of spare contacts. As with the signals they are powered off the DCC bus at 5v via a Vellemann voltage regulator. It all seems to work quite nicely. Both sidings can’t be pulled off at the same time, nor can the slip be set wrong – both roads set straight across – all of this to prevent crossing polarity problems with both the slip and acute crossing. The points have also been ganged in pairs to also make operation simpler. The arrival/exit crossover, the two sidings and their respective catch points, and the release crossover. Diodes in series with the colour lights signals indicate their state. The exit crossover also sets the route indicator position when it’s set for clear as before. Luckily I was able to make all these changes without any major re-working of the existing wiring, just adding more along the way. The underside is not that pretty... You may also see that a few more small structures have been added along with a bit more grassing and some vehicles of various sorts mainly produced from Oxford and Base models. I still have a Ransomes & Rapier 6 ton mobile crane to finish off to mostly complete things, it’s been on the go for about a year or more so needs finishing. Otherwise that container on the lorry will remain stuck there forever…….although it is properly roped on as advised by BR when the container is larger than the flatbed it’s loaded onto. This seems to have been a common occurrence but why PR has ended up with a newish lorry that isn’t really big enough for the task only the local BR management know…. Edited March 31, 2022 by Izzy 20 Link to post Share on other sites More sharing options...
sb67 Posted July 12, 2021 Share Posted July 12, 2021 Good to see some more photo's Izzy 1 Link to post Share on other sites More sharing options...
RMweb Premium Izzy Posted July 16, 2021 Author RMweb Premium Share Posted July 16, 2021 (edited) I've just been playing around with my iphone 8+ to see what's possible really low down with 2mm in confined spaces. Although it's a bit surreal I quite like this one. Edited March 31, 2022 by Izzy 15 Link to post Share on other sites More sharing options...
RMweb Premium Izzy Posted July 17, 2021 Author RMweb Premium Share Posted July 17, 2021 (edited) The Electrical interlocking I’ve been asked if I could explain the simple electrical power routing interlocking I have used on the re-build of PR. I will try as best I can. Power routing is a quite well known and long established method of providing power to the track under DC so as to give a simple way of sectioning the track by the throw of the points. So only the one for which the route is set is live. I have always used this in the past as in many cases it means isolating sections are almost not needed, and not at all in some cases depending on the actual layout track plan. This method of electrical wiring is always associated with the use of live crossings/frogs because it is the polarity that is provided to them that then cascades onto the next point. This polarity is usually provided by a changeover/microswitch of some kind that is activated by moving the points. With PR I have used the basic principle in a different way, in that the throw of the points decides, using these type of switches, whether the hacked servos (HS) that move other points are given the current with which to do so, whether power is routed to them or not. So, anyway, how does this work in practice? To detail this I really need to also show the electrical circuitry arrangements for the HS because they are part of the total design that I have evolved. It isn’t particularly complicated, quite simple and basic really, and indeed needs to be for me to cope with it. The HS are produced in the first place by simply ripping out the electrical bits in servos and wiring the motor connections to a couple of pcb tabs on the outer casing for power connection. They are then mated with a couple of bits of 1/16” ply to help fix them to the underside of the baseboard and to which a DPST toggle switch is fitted which the HS moves with it’s arm. So the switch acts as a physical movement limit as well as providing the circuit which powers the HS. The circuit to work them consists of two DPST toggle switches. One is moved by the servo arm, the other is the panel switch. Flick the panel switch and the HS moves until the switch on it cuts the power because the polarity has changed. Move the panel switch back, and once again the HS has power, but the polarity is opposite to before, so it moves in reverse, which is of course what is required. Until of course power is cut once again with the movement of the HS switch. And so it’s all back where it started. Connect up the servo arm to the point tie-bar by whatever means and method you choose and there you have it. A simple, cheap, and versatile way of moving point blades back and forth. To provide crossing/frog feed of the correct polarity it’s a simple matter to fit a DPDT instead of a DPST to the HS so there are two changeover switches, one to work the HS, and the other for the crossing. Now, taking this one stage further I also fitted DPDT’s to the control panel. So again one side to work the HS, with a spare set of contacts for other purposes. These other purposes are two-fold. On the arrival/exit crossover they are used to set which light is lit on the main platform signal route indicator when it is set at clear/green. On the other three switches, the release crossover and the two sidings, they are used as on/off to allow or prevent a particular HS from moving. Specifically siding 2’s HS won’t work until the release crossover have been pulled off. When Siding 2 is pulled off this then cuts power to the release crossover. So it has to be restored to normal first. This is to prevent polarity conflicts on the track with the single slip. A similar arrangement occurs with the two sidings. If one is pulled off then power is cut to the other ones HS. This is to prevent more polarity conflicts with the acute crossing. That only one route across is set at any one time to get the correct polarities needed. I had to draw it out several times to get things right because siding 2’s power routing actually needed to go through both siding 1 and the release. Sadly I eventually realised that just the three sets of on/off switches wasn’t enough and so a micro-switch was added into the mix to cut off power to the release when siding 2 is pulled off. This is worked by the siding 2 HS arm so is not on this crude wiring dia I finally managed to draw up for the hand held control panel box. It’s not probably full interlocking as most people would want, but it works rather well for me in that it’s nice and simple. All the toggle switches are set ‘up’ by default, or off, as would I think be the case in a signal box. So two separate routes from the individual tracks each into a platform. All signals at Red/danger. Pulling them down/off then shows what has been set. A fairly clear and simple indication. And I can’t pull off any unless it’s allowed by the interlocking. Those for the signals have diodes added into the feeds to indicate their state. Here's that small hand held control box. It uses a 25pin D-sub connection. 16 wires were needed, so one more than a 15pin one.... And here's a HS in situ. I'm afraid the underside of PR doesn't look that pretty. But it all works okay and seems robust enough to be manhandled around without issue, which is the main thing. The blue/brown are DCC track feed. Red/Black 5v servo power. Orange is crossing polarity. Yellow is from point switches. Purple is signal feed. Hope that helps explain things a bit. Please say if it isn’t or more info is required. Edited March 31, 2022 by Izzy 3 2 Link to post Share on other sites More sharing options...
RMweb Premium Popular Post Izzy Posted October 18, 2021 Author RMweb Premium Popular Post Share Posted October 18, 2021 (edited) A 6 ton mobile yard crane. One of the things I have wanted to put on PR for quite some while has been a mobile crane for the yard. Something was needed to move the containers onto the lorries and vice-versa and St Boltophs had a 6T one from the late ‘50’s. From shots it seems to have been the fairly common Ransomes & Rapier one. It took me a long while to find sufficient information so this has been one of those jobs that seems to have been in progress for ever. In reality about a couple of years since I turned the wheels and then hit the stops with lack of enough details. The wheels are brass turnings, the main body and jib from thin brass sheet for some strength with the rest in plasticard. Using thin brass sheet sliced up with a scalpel and bent to form the jib steelwork wasn’t the easiest thing to do but I felt it would look better this way as with the Cowans Sheldon crane I made a while back. It would have been nice to have made a better job of it, but the model is I think acceptable. With this made and added to Priory Road this really brings this thread on the layout to a natural conclusion, for while there may be the odd item to add or change it’s pretty much finished. It’s been an interesting and enjoyable layout to produce, and now I can just settle down to using it while attention can be more focused on the rolling stock, trying to arrange a representative selection to use with each time period and matching running sequence, less services in later BR blue days with the Stour valley line being truncated at Sudbury and the Brightlingsea branch closed. Thank you for visiting, I hope it’s been worthwhile. Bob Edited March 31, 2022 by Izzy 16 4 3 Link to post Share on other sites More sharing options...
RMweb Premium Izzy Posted February 14, 2022 Author RMweb Premium Share Posted February 14, 2022 (edited) The exGE loading gauge has now been added. Here's the N7/3 awaiting it's next duty turn and sitting under it. Bob Edited March 31, 2022 by Izzy 16 Link to post Share on other sites More sharing options...
RMweb Premium Izzy Posted August 14, 2022 Author RMweb Premium Share Posted August 14, 2022 Just to say I've finally managed to restore all the images on this thread for anybody interested. Onto the next thread now..... Bob 13 Link to post Share on other sites More sharing options...
gelboy45 Posted August 14, 2022 Share Posted August 14, 2022 Hi Thank you so much for not only restoring the images but for reuniting me with your excellent layout. Gerry Baldwin 1 3 1 Link to post Share on other sites More sharing options...
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