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Search results for: Bullhead
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... I found one with Pandrol clips here: OBTUSE-CROSSING.jpg Image linked from this site, which has several close-up pictures of track: http://www.railwaysignallingconcepts.in/railway-signalling-switch-crossing-components/ Without chairs or keys in the rail web, the most noticeable feature of built-up (as opposed to cast) flat-bottom crossings is the number of spacer bolts and bolt-heads visible. Also the check rails for heavy-rail FB have machined flares rather than the bent ends for bullhead. cheers, Martin. posted: 5 Jun 2018 13:26 from: Hayfield Martin As usual thanks, looks like the chairs are all Pandrol and for once using 0.5 mm copperclad strip to act as both spacers and functional gauge supports will be appropriate posted: 7 Jun 2018 08:29 from: Hayfield I have received982_070328_190000000.jpg a reply from a nice chap at Pandrol, whilst some of the photos show amazing diamond formations there was one (photo attached) which showed a different type of chair on the inside of check ...
... prodimg.php?IName=photos/t44518mr.jpg&IDesc=0000001130&IWidth=550&IHeight=176 So presumably Brian has the full info. My only information for Midland Railway is 45ft rails/ 18 sleepers 9ft long/ end sleepers 12" wide (remainder 10" wide), spaced 12" from the rail end and carrying standard chairs. Nominal 1/4" expansion gap. So end timber spacing becomes 24.1/4". I don't have the other spacings. The MR also used heavier 100.1/3 lb bullhead rail. However, the MR ceased to exist in 1923, becoming part of the LMS, and the last renewals of track matching the MR details above would probably have been in the 1930s. I understand from your topic on MRF forum that you are modelling the 1960s. Sleepers have a typical life of 25-30 years, so except in the goods yard on your plan it's unlikely (but not impossible) that any such 9ft-sleeper track would remain in the running lines and platforms. You could very reasonably ...
... the "A" timber is always 14" wide, so the slab can be placed further back. Here some pics: 2_270449_340000000.jpg REA (Non-GWR). Centre of brackets and bolts on centre-line of timber. No holding-down bolt. The blunt nose certainly looks closer to the edge of the timber than 2", but on the other hand it also looks narrower than 3/4 ", so this may be a modern revision with 5/8" nose as FB (on a new bullhead crossing with 12" timbers). 2_121258_410000000.jpg 2_121355_050000000.jpg GWR. With holding-down bolt. On 14" timber. 14" timbers "A" were once quite common elsewhere, and I'm wondering if this is the origin of the commonly-quoted 4" dimension for the blunt nose from the timber centre? 3" extension plus 4"= 7"= centre of 14" timber, if the extension is aligned to the edge of the timber. Phil O posted a top view of GWR slab& bracket at ...
... straight section of the turnout straight? Is it a prototypical issue or fundamental geometry that is fudged with RTR track? If faced with this issue, is it preferable to insert the turnout in the straight rather than the curve? posted: 3 Nov 2008 14:41 from: Martin Wynne Gordon S wrote: Just out of interest, why isn't the straight section of the turnout straight? Is it a prototypical issue or fundamental geometry that is fudged with RTR track? Hi Gordon, Prototypically, at least for the common REA bullhead switches, it's not possible to have a dead straight road and a perfectly tangential curved road. If you insert a turnout in the straight track as the main road, the turnout road can't be a tangential curve. If you insert a turnout in the curved track as the main road, the turnout road can't be dead straight. Here's a picture to illustrate that. Look at the turnout below the (interesting!) signal. The main running line is the curved track, so this is a left -hand turnout ...
145. Way-beams
... topic: 3259 Way-beams posted: 19 Apr 2018 16:13 from: richard_t Hi A recent photograph on ebay showed that on my chosen prototype where a road went under the station the track was on way-beams. I know little about way-beams, so I wonder if I could ask the following: (These are for bullhead rail) What would the longest beam be, and if the section of track was longer, would the joints in the way-beams be staggered. The track is straight in all cases in my chosen prototype where it's on way-beams. Would any rail joints be on the beams? I've seen on the MOD document that rail joints shouldn't be within 4m of the end of the way-beams. It seems there are cross beams (for want of a better term), between the way-beams every 4 or 5 chairs. Does this seem right and was there a fixed size for the beams? Finally, on one of the platform roads where the under bridge goes under ...
... the crossing chairs. And if the chair outlines were also included then we'd know if we needed 12" or 14" timbers to accommodate all the fixings. Dave R posted: 1 Jun 2009 14:32 from: Martin Wynne David R wrote: Please add this to my "wish list" as, in many designs, the crossing chairs are perpendicular to this bisecting line and not aligned with the timbers -- the prototype then didn't need left and right-hand versions of the crossing chairs. Hi Dave, For bullhead track, I think you can replace "in many designs" with "always". I can't think of any BH crossing chairs which were handed. If you change to the "equalized" styles of timbering in Templot, the timbers are aligned to the half-angle, and you can align the chairs to the timber edges. If you are using "square-on" timbering instead, you could overlay a duplicate template showing only the equalized timber centre-lines when printing a construction template. This would give ...
147. Slattocks Junctions
... Martin Wynne Andy G wrote: This is actually the way I had originally done it with a regular slip but Dick commented that there was a dog leg in it and that the straight path would actually give a better alignment which it did seem to. If I introduce the short length (about four sleepers worth!) then I can get an alignment as you suggested, however pushing the other turnouts out moves the loop turnout which I've already built (oops jumped the gun!). Hi Andy, The standard sizes for bullhead slips are 7, 7.1/2 and 8 (with fixed K-crossings). I think it's extremely unlikely that an irregular single slip would be designed for this location. It's more likely that any special work would be done in the tandem, to allow standard sizes to be used in the running lines for much easier maintenance. So I changed the left half of the tandem to B-8.3/4, and then got a smooth line across the slip at 1:7 regular, without dog-legs ...
... : Search- tandem turnouts. The two types of 3-way turnout described in your scan are called "3 -throw" turnouts (with the two switches combined), and "tandem" turnouts (with the switches staggered as shown). 3-throw turnouts were used only to save space in yards, never in running lines. They were much used on the old Midland Railway, but not so much elsewhere. They are not used in modern track. But 3-way tandem turnouts were very common in bullhead track and are still used today. The term "lap" turnout is not used in the UK. Your picture of a model turnout with the switches built into the vee rail of the preceding turnout doesn't have a name as far as I know. It's the sort of thing you can build quite easily in a model to save space, as in the Jing video which I posted earlier. There is another one for example in this video, in order to match the underlying sketch: http://www.templot.com/ ...
... topic: 916 European Switch Blades posted: 30 Jul 2009 18:11 from: Alan McMillan Hi all, Does anyone know of a source of supply for European switch blade rail in 3.5mm/ft? I have included here some pictures so you know what it looks like. I have had a thought that maybe it could be fabricated by cutting the bottom lobe off normal bullhead rail and substituting a strip of nickel silver. Any thoughts? Regards Alan McMillan412_301309_510000000.jpg 412_301310_470000000.jpg 412_301310_250000000.jpg Last edited on 30 Jul 2009 18:12 by Alan McMillan Parts of Templot Club may not function unless you enable JavaScript (also called Active Scripting) in your browser. Templot Club> Forums> Templot talk> European Switch Blades about Templot Club Templot Companion- User Guide- A-Z Index Templot Explained for beginners Please click: important information for new members and first-time visitors. indexing link for search engines back to top of page Please read this important note about copyright: Unless stated otherwise, all the files submitted to this web site are copyright and the property ...
... other editions that have been done. Rob posted: 21 Jan 2018 00:37 from: Martin Wynne madscientist wrote: BRT Handbook? Hi Dave, 16 showing at: http://www.abebooks.co.uk/book-search/title/british-railway-track-design-construction-maintenance/ Editions: 1. 1943/1947/1950 (rare) 2. 1956 (blue cover) 3. 1964 (red cover) 4. 1971 (black cover) 5.... Editions 2 or 3 for bullhead data. Edition 4 is almost all flat-bottom, but more detailed about track generally. Martin. posted: 21 Jan 2018 00:59 from: madscientist Thanks Martin, just bought the 1956 version posted: 21 Jan 2018 01:01 from: madscientist I have the 2mm" track" book, but it's not great on prototype track imho Parts of Templot Club may not function unless you enable JavaScript (also called Active Scripting) in your browser. Templot Club> Forums> I found a flaw> Issues ...
151. LSWR Turnouts
... designs. Regards Brian Lewis. posted: 16 Sep 2009 10:10 from: Martin Wynne Brian Lewis wrote The LSWR Timber Tracks track bases are produced from prototype drawings so, assuming Templot has done the same, then there should be nothing more than a modest tweaking to do. But do consider that Martin must make Templot generic, rather than specific, bearing in mind the number of railways that worked to their own designs. Hi Brian, Phil, Templot can be customized to any prototype, certainly for standard-gauge bullhead. However, I don't have either this file, or the LSWR drawings. So I can't say how closely these particular templates match the claimed prototype. But I am certain that it is possible to produce correct templates to the LSWR designs in Templot. The generic REA designs are simply the switch-on defaults. regards, Martin. posted: 16 Sep 2009 10:46 from: John Lewis Brian Lewis wrote:> Timber Tracks is a separate company from Carrs-C+ L, although it is operating under ...
152. Making crossing vees
... is much easier to file a vee after assembling it. Even easier if you use a disc sander. This shows how a vee can be constructed to any angle matching the template, without needing filing jigs, and finishing with solid metal at the nose. I have greatly exaggerated the crossing angle for clarity. The rails are shown in cross-section along the rail -- yellow shows the rail head and foot, orange shows the web of the rail: 2_060749_540000000.png Make sure you have both rails the right way up. Bullhead rail has the thicker part at the top. A is a prepared piece of rail with the end bent to the crossing angle, or slightly less. Allow a little extra on the overall length. Then file it as shown to become the splice rail. Make another one of the opposite hand as B, to become the point rail (nose). No need to file the end yet, but file a notch in it to receive A as shown. The filing does not need to be very accurate. C ...
... the excess baseplate is gut away with a slitting disk in a minidrill. Holding the drill at an angle helps to hide the baseplate. I also gently tidy the vee itself with the minidrill so that there are no jolts on the sides. Dont forget to give it a wash so that any left over flux is removed. These views show the front and back. One thing that crops up from time to time and seems to get overlooked by those who know how to build track is the orientation of the rail. With bullhead rail the fat bit is at the top not the bottom. Including taking the pictures this vee took half an hour to put together. (well 32 mins actually!) Hope this helps someone. Jim posted: 26 Oct 2009 12:15 from: Jim S-W Hi All Been busy working on the station throat for the Derby/London end of the station. While the track is a lot simpler (read boring!) than the other end the way that everything is on a curve does provide a ...
154. Crossing baseplate
... that question being the baseplate thickness available from Eileen's is either 18thou or 22thou thickness, and with using exactoscale chairs which I believe nominally hold the rail at 0.6mm above the timbers. Which would have the preferable height 0.45 (18thou) or 0.55 (22thou)? Many thanks. Dave posted: 7 Dec 2017 11:02 from: Martin Wynne davelong wrote: I've read that it's advisable that the Vee nose is slightly lower than the surrounding wing rails, but by how much is recommended? Hi Dave, The prototype (bullhead) is typically 3/16" below the wing rails at the nose, running out in 15". In 4mm/ft scale that equates to 2.5 thou (0.06mm) running out in 5mm. It should be removed from the top of the vee when rounding and fettling the running edges at the nose. The bottom of the vee is level with the wing rails, 1.3/4" above the timbers for the chair base (0.6mm). regards, Martin. posted: 7 Dec 2017 12:57 ...
155. Lancaster Green Ayre
... , no matter how flat the crossing, if you are using the correct wheel-width for the track standard. Unfortunately many 0 gauge wheels are too narrow for the G0G-F standard they are intended for. Hence the wheel drop problem. Have you looked at 0-MF (31.5mm gauge, 1.5mm flangeways)? It's really a much better option than G0G-F and easily accepts all current wheels*, which will run fully supported through the crossings. It looks better too. A swing-nose crossing in bullhead is a very rare thing and will look odd on a visible scenic section. For some track pics of a large layout using 0-MF, see: http://www.rmweb.co.uk/community/index.php/blog/253/entry-1422-heyside-trackwork/ Richard is a member of this parish, see: topic 911- message 5256 I'm sure he would be happy to comment on his experience of 0-MF if you contact him here or via RMweb. *except S7 of course. PS Is ...
156. Switch detail pics
... topic: 623 Switch detail pics posted: 13 Nov 2008 14:11 from: Martin Wynne Some excellent pics of REA bullhead switch detail, kindly supplied by Mick Nicholson. The white diamond mark on this LNER ground disc signal indicates track-circuiting, as can be seen from the wire links across the rail joint and the insulated joints in the sole plate on the toe timber and in the stretcher bars. Notice the variable spacing of the chairs in the right foreground, showing the closed-up sleeper spacing adjacent to a rail joint: switch1_1983.jpg A trailing view of the same switch: switch2_1983.jpg Here is a closer view of that. I have added some yellow lines because this picture is an excellent illustration of the sharp "set" (bend) which occurs in the diverging stock rail just ahead of the switch tips: switch_set_1983.jpg More about that in: this topic. Mick also supplied this picture of a badly worn switch tip at Beverly. It's probably better not to try to replicate this on a model: worn_switch_tips_beverley.jpg Many thanks, Mick. ...
... " (102") sleepers menu item. By default Templot draws 9ft sleepers (suitable for track renewals prior to about 1925) with dotted marks showing the later 8ft-6in sleeper end locations. This matches the convention on many commercial templates. will this also adjust the point sleepers? C&L don't make fixed turnout bases so there is nothing to which the turnout templates could be matched. For turnouts for use with the EM flexi-track, the default settings in Templot create the correct timber spacings for most UK bullhead prototype turnouts. You can customize the spacings if you wish, but it is more complicated than making a single option setting. For the switch (points) section, the timber spacings have to match the design of the switch, and you can change them by creating a custom switch. Start from the template> switch options... menu item and click the set custom switch... button. For the middle part of the turnout the timber spacings can be set from the real> timbering> timbering data ...
158. 0-16.5 turnout
... at using it. I will compare the sizes Secondly to start off with its a small diorama using with Peco 0-16.5 flexitrack which uses Peco's standard code 100 flatbottom rail. The Peco spikes I have are quite old and for my purposes a bit long and possibly overscale but give a good visual representation to match their own track, and for a turnout with about 20 timbers its not much of a chore to cut the spikes down a bit. I joined the 7mm NGA for a time but cannot remember if code 100 bullhead rail was an option and if there was any chair options available? An alternative as I mentioned, might be the old Peco wire based fastenings, these may give me a viable alternative just to have something rather than nothing As at the moment I only need 1 turnout I will use parts in my "old track building parts box" posted: 22 Dec 2018 15:15 from: Hayfield Stephen I have had a measure plus realised that there is a 4mm comparison on the data sheet. As the Karlgarin has larger ...
159. 3mm Society chairs
... going to get these TTPs and TPPs mixed up some time! The number of times I had to refer to the price list just typing this post... Cheers, Paul posted: 21 Sep 2020 07:42 from: Hayfield What gauge of rail do they take please and how much do they cost posted: 21 Sep 2020 09:41 from: Paul Boyd Hayfield wrote: What gauge of rail do they take please and how much do they cost Hi John The chairs are to take the 3mm Society code 60 bullhead rail. They're are sold on a sprue which contains 10 plain chairs, one check rail chair and one slide chair (Nigel posted a photo earlier). Prices are £6.30 for a pack of 20 sprues (a "point pack", TPP1), £31.50 for a pack of 100 sprues (" plain track pack", TTP1) and £57.75 for a pack of 200 sprues (TTP2). The products are only available to members of The 3mm Society though, and I haven't checked postage yet ...
... method 2. But not always -- a double-junction often requires method 1 for example, and likewise in curviform ladders. Looking at a track plan I can immediately see which method is required. But it's difficult to find the words to explain it.* Any help gratefully received. In an ideal world, Templot would use much more complex maths for the curving calculations, so that both methods produce an identical result. But we are not in an ideal world -- and nor were the track designers in the bullhead era. Even less so the gangers who then laid it. Like them, Templot needs a big hammer. *OS map makers face a similar problem with ornamental parkland. Everyone knows it when they see it: http://goo.gl/maps/gieHhkLay9gr2J6g7 But how do you define it in words to differentiate it from ordinary farmland? cheers, Martin. Parts of Templot Club may not function unless you enable JavaScript (also called Active Scripting) in your browser. Templot Club> Forums> Templot talk> diamond ...
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