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Search results for: incline
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... problem of which way a wooden key should be facing. Hi Andy, Sorry to throw a fly in your ointment. (Can you throw a fly?) Check rails always have solid wooden keys even where the rest of the track has spring steel keys. The side forces which check rails must resist can be sufficient to crush the steel keys. Check rails are also vertical in order to present full face contact with the back of the wheel and prevent rapid wear -- although some old pre-group chair drawings show inclined check rails. If you decide to mould plastic check rails, you need to know that check rails often have two fish-bolt holes in one end. They are often cut from redundant running rails. This will be the first thing I check when the Peco turnouts are released. It was hot here, but not now -- summer seems to have gone AWOL. Martin. posted: 1 Aug 2017 17:50 from: Andrew Barrowman Hi Martin, I forgot about the wooden check rail keys. Which direction ...
... . The sleepers were of the same thickness 1/32" ply. Regards Tony. posted: 19 Aug 2018 08:34 from: Andrew Duncan Nigel Brown wrote: If you need a source of thin sleepers, I'd suggest looking at Plastruct and Evergreen strip. I've used them entirely on my 3mm layout, although in my case they're not thin. Plastruct and Evergreen are slightly different materials, so you need to check that the solvent you use works on whatever you choose. Nigel Hello Nigel Yes I think I'd be inclined to this route with Evergreen as that's what I normal use and probably have in stock. A ndrew posted: 19 Aug 2018 12:53 from: Andrew Duncan Tony W wrote: The track in goods yards and sidings was often lower than the adjacent running lines anyway. I achieved this effect by using 1/16" cork underlay for the sidings and 1/8" cork under the running lines. The difference was achieved by sanding the thicker cork down to match over a foot or so. The sleepers were ...
... cant will be same for the slow as the fast- due to the continuous timbers- and will be calculated to suit the higher speed. But all guess work of course! Howard. posted: 12 Mar 2011 12:16 from: geoff Howard, Thank you. Geoff posted: 8 Feb 2012 13:58 from: David R One not-so obvious question arises from the above to which I'm sure somebody knows the answer. As check-rails are vertical and wing-rails are, like running rails, inclined at 1:20 what is the prototype's solution when a wing-rail is extended to become a check-rail? Does the check-rail bit remain inclined or is a twist put into the rail? Or is there another way? This is applicable to tandem turnouts as well as the crossovers pictured above. Regards Dave R posted: 9 Feb 2012 14:39 from: Tony W David R wrote: As check-rails are vertical and wing-rails are, like running rails, inclined at 1: ...
... Konica Auto S2, my first proper camera. I loved that camera, and I'm not the only one: http://www.lomography.com/magazine/68841-the-konica-auto-s2-top-notch-rangefinder Film was Ilford FP4 developed in Paterson Acutol. Sorry I don't have any exposure details. Here's the map of what I missed: clee_hill_map_1024x720.png I have ringed that row of cottages, camera at X. Here is Google's 2009 view. The camera car is on the location of the bridge over the incline: http://goo.gl/maps/wMGnLFrHkP12 cheers, Martin. posted: 11 Apr 2018 22:02 from: Rob Manchester Martin, Thanks for the pics. The shot looking across to the row of cottages my not be a work of art but boy does it tell a story about the place, from the cars to the washing on the line. Acutol was great on slow/medium speed films. Enhanced sharpness and a slightly gritty clumping of the grain structure suits asmospheric and industrial subjects beautifully. I ...
... of roller gauges (in EM). A pair with shallow slots which I think do not affect the chairs and a set from C&L which have much deeper slots and are more positive to use (the deeper slots hold the rail more firmly) than the other set, but when used narrow the gauge. Now for copperclad construction the C&L roller gauges are fine as the rail is held firmly in the upright position, but alas for the plastic chair construction where the chairs are on a 1-20 inclination, the gauges hold the rail in the vertical. When the gauges are removed the chairs go back to their 1-20 inclination and the gauge narrows. What I am looking for is a gauge with a positive connection to the rails but allows for the 1-20 inclination. I have a contact who is willing to turn me a set and I am looking for any advice that is available Please forgive this bad photo (will up load from my phone soon)undefined The thought behind this drawing is that there ...
... topic: 2857 Diamond crossing (rail height in the centre) posted: 9 Mar 2016 17:56 from: DerekStuart I wonder if anyone can shed some light on this or suggest how to remedy it, please.I have started my first diamond. I have given the stock rail a nice, gentle curve as per NER design (8ft radius. I am using Exactoscale functional chairs on ply. As a result of the 1:20 rail incline the centre of the curve is lower than the adjacent 'point rail' (even with the gentle tapering as specified in the NER diagram). Because the inner part of the tread (larger dia.) is already on a raised point rail, by the time it reaches the apex of the curve, the outer part of the tread (smaller dia.) is floating ready to drop down. I have of course made sure that the rail is supported at this point. The drop in height is just as a result of the rail being tilted at this point. My question is- as ...
... like to design a simple jig that anyone can build from easy to get components. Thanks Derek posted: 22 Oct 2020 00:36 from: Martin Wynne Hi Derek, I've posted these diagrams before, including in your previous topic on this subject: topic 2788 2_041828_140000000.png 2_041840_270000000.png They could be worked up into a proper press tool with a depth stop to set the bend angle, etc., or as an attachment to a drill press. Note the above is for vertical rail. If you want to make horizontal bends in inclined rail you need a conical mandrel, the rail must be held firmly at the inclination angle (1 :20), and a lot more force. It may require the rail to be annealed at red heat first. It might be possible to twist the rail from inclined to vertical in front of the bend, make a horizontal bend, and then twist the rail back to inclined beyond the bend. Making two twists and a bend in the space of a few mm, while keeping the running edge in line, ...
... had any more thoughts about the design problem? Which is the more important -- the length of the platform or the length of the run-round? If you adopt the "two tracks under the bridge" idea, will you still have room in the fiddle yard? It would also mean losing the tandem turnout -- an attractive formation and typical of Iain's designs. On the other hand, not building it makes the trackwork a bit simpler, bearing in mind that you may already have a single slip. My inclination would be to go for my first design -- because if you are building your own track you may as well make the most of its advantages over ready-made track. That design trades the slip for a second tandem turnout -- turnouts are always easier to build than than diamonds. On the other hand, it's not my project -- it's yours. regards, Martin. posted: 5 Aug 2007 01:52 from: Rextanka Martin Wynne wrote: Rextanka wrote: I can load the background shape but ...
... not as yet scanned Radstock, unfortunately, so I have had to use the 25" series. There are a few departures from the OS plan, partly because I hae me doots about some of the alignments, but more importantly because I wanted to show the 1936-37 alterations to the layout, primarily affecting the ladder of slips across the yard and the connection into the Up Main. Whilst excluding what I take to be the tramways, I have included the lower end of the Clandown Branch, and the standard gauge incline across the bridge giving access to Tyning colliery and batches. Also shown are the connection towards Ludlows and the British Wagon Works tracks, the latter a mess of tight curves which I have eased somewhat. I got to know the shed area fairly intimately when working with the S&D Circle/Trust in the years it occupied the Radstock site (early 1970's), so preparation of this layout has brought back some fond memories! Hope this may be of some interest. Last edited on 4 Sep 2017 15:21 ...
... topic: 2420 Transition from level to incline posted: 12 Mar 2014 23:18 from: Pete Brownlow Apologies if this has been answered, but if it has I failed to find the right search term! I'm working in 00-SF, so I'll mainly be using RTR stock. I was wondering what "vertical radius" (if that is the right term) I should be looking at to transition track from level into an incline, that will not cause problems to most RTR stock. Or to put it another way, over what length should I transition from level to about 1 in 30. Any thoughts from the wise? Thanks, Pete posted: 14 Mar 2014 13:16 from: Martin Wynne Pete Brownlow wrote: Or to put it another way, over what length should I transition from level to about 1 in 30. Hi Pete, Are you sure about the 1:30? That's very steep, especially if on a curve. Have you checked that your locomotives will pull a train up 1:30? ...
... under to the lower level for maintenance, deal with derailments etc. If you plan on a 4% grade the change in elevation is 4 cm. per meter of track. This applies as well to the track in the center of the upper level. Where do your grades start and end? The lower level should be completed before any baseboards are put in place for the upper level, as it is almost impossible to install track, wiring etc. after the upper baseboards are in place. Further complicating matters, the incline between levels is seriously in the way of anything that requires to be done behind it. How much wiring etc. will be underneath the upper baseboards and how easy is it to install and maintain? Where is the access to the room? I presume you come up through the floor somewhere in the middle. Does this conflict with your plan? Consider there are places, particularly in corners that you will nor b able to reach to on the lower level. Regards John posted: 4 Dec 2016 22:35 from ...
12. Elevation
... that the printed output can be used as a construction template. In other words, the length of a turnout is the same regardless of whether it will be laid horizontal or on a gradient. For a 3D representation it would need to be shortened in the 2D plan view if laid on a gradient, like this (gradient greatly exaggerated for clarity): 2_110741_270000000.png Which would obviously make the 2D plan view useless for track construction (but correct for baseboard construction). While the above would be easy to do in Templot for inclined straight track, it gets more complex for the vertical curves top and bottom, and turns into a minefield for curved track and junctions. We are not going there. To create a true 3D representation I suggest exporting a DXF file from Templot, and making the corrections in a CAD package for the inclined tracks. In practice with the gradients in a typical finescale model railway the difference in length for a single turnout is barely perceptible, but it builds up for a long snaking gradient between levels, and especially for a ...
13. newbie
... 8 Mar 2010 20:22 from: tony polman Hi peter. thanks for the comments. as you say, the fiddle yard is intended to run from bottom left, while the platform would be below template 6. the small" head shunt" is the loco release for running round. 200mm to be adapted. the runaround loop will double as a head shunt. practical or not? posted: 8 Mar 2010 20:58 from: Paul Boyd I've been called worse Having another look, I think I would be inclined to make two biggish changes. 1- lose the two sidings at the bottom, or move them to behind the platform. That would be more prototypical. 2- flatten the run-round loop (template 5 on Alan's box file). You'd need to be careful with radii though. I think looking at it overall, it's all too curvy, and gives the impression of trying to fill the space with track. Have a look at the attached box file and see what you think- it's a bit rough ...
... fenced. Is this for gravity shunting of some sort? Many thanks to Robert C on RMweb. regards, Martin. posted: 30 Oct 2007 09:01 from: Jamie92208 Martin Wynne wrote: On the right the brake van is on a road which appears to be ramped up and fenced. Is this for gravity shunting of some sort? Hi, The brake van spur was often ramped and I didn't know why but I have just read a book by Gerard Fiennes which explains it. Brake vans were stored on an incline at the end of the yard so that when a train had been prepared usually with the loco at the far end the brake could then be run down by gravity under the control of the guard's handbrake and put on the back of the train. Without seeing the whole layout it appears that the double slip will give access to most of the roads in the yard. Jamie Guest posted: 30 Oct 2007 09:06 from: Nigel Brown Martin Wynne wrote: Here's an interesting pic linked from RMweb (Banbury in August ...
... , and is extremely difficult to replicate properly in model form. The running face of the rail must remain in a straight line, so what you have in effect is a sideways joggle in the foot of the rail. I now need to correct myself. I have now read in David Smith's GWR book that GWR check rails are vertical to reduce wear on the rail head, and so better maintain the check gauge. I looked at the Paddington chair drawings and they confirm this. However, other bullhead check chair drawings show inclined check rails, so I'm not sure if this is purely a GWR practice or more widespread. Apologies for the error. However all bullhead wing rails are inclined. regards, Martin. posted: 15 Nov 2007 17:44 from: Bruce Boldner Martin, Well, I model the Midland, not 'God's Wonderful Railway', so I guess the jury is still out on whether the former may also have had vertically oriented rails in it's crossings. All very interesting. However I have found the most important aspect of a ...
... Martin Wynne Hi Godders, I've looked at this a few times. But what seems to be simple is in fact a minefield. I set out originally to create a 2-D track plan referenced to the rail top. This is essential if the templates are to be usable at full-size for track construction. If you introduce a 3rd dimension that all changes -- the 2-D view becomes a projection onto the horizontal, which can no longer be used as a construction template. The track needed for an incline is longer than the horizontal distance between the two ends. Railway inclines do not go straight up and down. There is a vertical curve at each end, of variable length, and sometimes the gradient changes mid-way. Although it might be possible to do something for plain track, it is much more difficult for the diverging track of a turnout laid on an incline, especially a curved turnout. The template boundaries do not always correspond to a pre-set peg position. But the real difficulty is much more ...
... the head diameter. regards, Martin. posted: 1 Jun 2015 08:30 from: Hayfield Martin Thanks, use Exactoscale rather than C&L chairs then posted: 1 Jun 2015 12:08 from: Martin Wynne Message deleted. See below. posted: 1 Jun 2015 12:12 from: Martin Wynne PLEASE disregard my previous message. I have now deleted it. I have done some more careful measuring of the Exactoscale chairs and P4 bases. The chairs are intended to provide the prototypical 1:20 inwards inclination on the rails. This means that the foot of the rails are wider apart than the track gauge, and the Exactoscale timbering bases reflect this. However, soldered model track is normally constructed with vertical rail, so the Exactoscale pip centres would not be appropriate for Vero pins and rivets. The foot of BS-95R bullhead rail is nominally 1/4" offset from the gauge line when inclined at 1:20. (It's not an easy calculation because the gauge is measured below the rail top, allowing for ...
... 60 and sharply curved. Your gradients would be straight. We have never noticed any problems on the main lines, in fact often new operators are not aware that there is a gradient. On the branch line we have occasionally run 6 of Tony's quite heavy coaches up the bank, although it does slow the loco down a bit. regards, Martin. Hi Martin, Sorry I was being a bit clumsy with my wording- what I should have said is that all we have on the layout is a couple of slight inclines on the dock branch (to do no more than bury the sleepers under a roadway. Mostyn on the prototype is dead level so there was never any need for us to explore the workability of gradients. We can, however, detect the change in a difficult train's performance if we do not level the boards carefully (e.g. a heavy rake of Mark 1s with a relatively weak loco). Dave Goodwin and I (and other members of our group) are very keen to come down and see Adavoyle Junction- ...
... match the pp image the templates correctly. Would the pp images be that accurate anyway for the main track outlines? Kind regards Dave Attachment: attach_518_763_p4_stechford_09_03 _12_2315_53.bgs 468 Last edited on 15 Mar 2009 13:14 by davelong posted: 15 Mar 2009 19:26 from: Martin Wynne Hi Dave, You need to upload the map .bmp file in addition to the .bgs file. It's likely to be a large file, so please zip it if possible. The upload limit here is 5MB. The turnouts look to be modern RT60 inclined 1435mm turnouts on concrete bearers, with UIC60 main rails, UIC60B or UIC54B switch rails, and UIC33 check rails. These need to be created as custom templates in Templot. For circular-curve turnouts the natural sizes are: RT60-C switch with 1:8.25 CLM V-crossing RT60-D switch with 1:9.5 CLM V-crossing RT60-E switch with 1:12.5 CLM V-crossing RT60-F switch with 1:15.75 CLM V-crossing RT60-SG switch with 1:20.25 ...
... (equalized incremental). It's clear from the above drawing that although the chairs are at the specified 2ft-6in centres all through, the "A" timber is not. This means that the default Templot templates are wrong in this respect (and I suspect many other templates). On the other hand, the photo appears to show the "A" bolt central on the timber. Also the slab appears to be a casting, rather than cut from M.S. plate (which makes sense if the wing rails are inclined and need angled seatings on the slab): 2_270449_340000000.jpg I haven't yet decided what to do about all this, but clearly a Templot program update will be needed, and some additional settings in the customized V-crossings. Note that the above drawing helpfully shows the visible rail foot in plan view where the rail is inclined, which in turn means the position of the twist in the point and splice rails is indicated. Here are a couple of GWR drawings for slab& brackets. Again I can't find any reference to ...
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