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Search results for: Bullhead
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... bends when it moves). These are the well-known sizes used for most standard-gauge track in the UK since about 1925. But for light railways, narrow-gauge and industrial tracks, you should normally use the loose-heel switches instead. Also the old loose-heel switches remained in sidings and yards and on branch lines for many years after 1925, often remaining until the line closed. The letter designations were introduced by the Railway Engineering Association after the grouping of railway companies in 1923, so the bullhead letter sizes are often called "REA switches". The GWR introduced their own design of flexible switches instead in 1930, but used the same letter designations. There are some more notes and diagrams about all this at: real track page in Templot Companion regards, Martin. posted: 27 Sep 2008 18:14 from: Hayfield Thanks Martin for clearing that up. John Parts of Templot Club may not function unless you enable JavaScript (also called Active Scripting) in your browser. Templot Club> Forums> Templot talk ...
... summer, I came back with the idea of building a small layout. Thanks to a bit of help from Martin I built a seven foot template all be it to 16.5mm gauge of a point which resembles one I photoed on the new section on the Welsh Highland Railway. Problem now is in the build, mk1 point used C& L 7mm sleepers Peco code 82 with Pandrol fixings and C& L slide chairs, I am reasonably happy with the result but want to improve on it. On reflection I should have used Bullhead rail. On a couple of other forums I have requested suggestions as to how to improve it, so far had no replies. I would be interested in knowing what materiels you are going to use please in building the L& B point. John Parts of Templot Club may not function unless you enable JavaScript (also called Active Scripting) in your browser. Templot Club> Forums> Share and show> Results of my first attempt about Templot Club Templot Companion- User Guide- A-Z Index Templot Explained for ...
... rail joint position. This exercise has helped with my understanding of turnouts and I have since delved into the Forum for more TEXITP info (as per the 2.14a changes note). One thought though, would it be prototypical to move the TVJP? Cheers Paul posted: 13 Aug 2019 17:53 from: Martin Wynne Kenilworth59 wrote: One thought though, would it be prototypical to move the TVJP? Hi Paul, Well no, it should be set to match the prototype drawings. The default settings match the UK REA bullhead designs. This method isn't setting out to create a model of a turnout, it's just using the turnout geometry functions to create a tangential curve. The turnout gets discarded in the process. p.s. glad you get a buzz from Templot -- be careful, it's known to be addictive! cheers, Martin. posted: 15 Aug 2019 21:43 from: Martin Wynne I have renamed this again, as make simple link. The word "tangential" won't mean much to many, and it's especially confusing when ...
... in effect over 12 x 0.3= 3.6mm, and the drop is more than doubled to 0.33mm or 13 thou. With greater wedging effect between the rails. That's enough to create a very noticeable bump. What all this means is that the effects are small, but noticeable. And easily avoided by using a track standard which provides full support for the wheels to be used: Measure the wheel width. Subtract a thou or two for the front chamfer. Subtract the width of the blunt nose on the vee. For traditional bullhead that is 3/4"= 0.25mm in 4mm scale. Divide the answer by 2, and subtract another thou or two for the rail top corner radius. The result is your maximum flangeway gap. Add that to the check gauge for the wheels, and the result is the track gauge. Notice that the track gauge is arrived at last. Rather than being the starting point because so many modellers regard it as the critical dimension. It isn't. Start with the wheels. (The check gauge for the wheels ...
... setting the curved (diverging) stock rail for REA switches. It's probably worth repeating them here. Isambard Kingdom Brunel wrote: I seem to be having problems with the "SET", does anyone have or can someone take a photo of the "SET" on an actual turnout. The best pictures I can find so far are in Rod Cameron's post at: http://www.rmweb.co.uk/forum/viewtopic.php?p =190472#p190472 Here I have marked up an extract from Rod's picture: stock_rail_rea.jpg The common REA bullhead A, B, etc. switches are "semi-curved" designs. For an ordinary straight turnout, that means there is a straight portion over the length of the tapered planing (machining) on the switch blade, and only beyond that the rails are curved. Here's a diagram to explain it: set_bend_rea.png Straight turnout: To make a size B curved stock rail for a straight turnout in 4mm/ft scale, do this: 1. Make two marks on the rail with a fine felt-tip pen ...
... the UK the bearers under plain track are called sleepers. They are 10 inches wide and 5 inches thick. That scales to 3.3mm wide in 4mm/ft scale models (00, EM, P4). The bearers under turnouts and other pointwork are called crossing timbers, usually just timbers. They are 12 inches wide and 6 inches thick. That scales to 4.0mm wide in 4mm/ft scale models. A few special ones are sometimes wider at 14 inches or even 16 inches where needed to support the chair castings for bullhead rail. Modern concrete bearers do vary a bit in thickness, but generally the widths are very similar. All these settings can be changed in Templot at real> timbering> menu items. cheers, Martin. Parts of Templot Club may not function unless you enable JavaScript (also called Active Scripting) in your browser. Templot Club> Forums> Baffled beginners> Yellow lines on print out. about Templot Club Templot Companion- User Guide- A-Z Index Templot Explained for beginners Please click: important information for new ...
... : 3310-e =1650 3315-e =0 3320-e =73.0832727547584 3325-e =146.166545509517 3330-e =12 3335-b =0 3340-b =0 3345-b =0 `! `!` template generated at 03:37:31 on 01/08/2019 using Templot v:2.23.c|scale= 4.0 mm/ft scale ratio= 1:76.2|track gauge= 18.2 flangeway gap= 1.0|template: curved (constant radius)|rail head only (bullhead): rails vertical|------------|RH regular half-diamond, fixed K-crossings (fixed diamond):|1 in 8.00 RAM( 1 in 8.03 CLM) regular V-crossing|1 in 8.00 RAM( 1 in 8.03 CLM) K-crossing|equalized-constant timbering|------------|main-road centre-line radius=[ -1650.0] (constant radius)|diagonal ...
188. 0-14
... using Templot for several years. Dinas WAS designed using Templot and I decided to use Roy Link's 14mm gauge standards- ie 18mm EM standards less 4mm. I nearly went for 13.8mm gauge but decided that this would make using Romford RP25 driving wheels and 14mm gauge axles too difficult. Dinas was supposed to be a quick layout as an interlude from 4mm narrow gauge- also built with templot but to 7.83mm gauge- but that is another story.... Track on Dinas is built using S scale Sociaety components- code 95 bullhead and cast whitemetal chairs- on 7mm scale ply sleepers standard gauge cut in half. Paul Holmes- builder of Dinas Andy G wrote: Paul Boyd wrote: Alan wrote: That's because Dinas is a 2ft prototype therefore 2x7=14mm Not being the slightest bit pedantic, of course, but wasn't Dinas 1ft 11 in gauge? Apparently it varied over the years, the original dimension given by James Spooner was 2'1" over the centres of the rails, which should roughly equate to the above gauge. The current dimension, ...
189. Layout progress
... nice perm way Cheers Simon. posted: 14 May 2008 18:36 from: sevenmil I'm Dead Jealous sevenmil class76 wrote: Nice trackwork it looks like P4 track co components certainly nice perm way Cheers Simon. posted: 15 May 2008 02:33 from: Nigel Brown Hi Simon Thanks for the compliment. It's actually 3mm finescale. The sleepers/timbers are cut from Evergreen strip (which is why the ones on the far board are white), the plastic chairs are from Ian Osborne, the rail is Code 60 bullhead from the 3mm Society, and the gauges used are from Finney& Smith. I used Humbrol acrylic paints to blend my own shades for the track, which happened to be very close to what the P4 Track Co. components are produced in, which may help to give it the P4 look! By the way, I believe that the P4 Track Co. are working on some components for the 3mm Society, which will of course make possible even more of a P4 look. cheers Nigel Parts of Templot Club may ...
190. Timbering Question
... joint, needing to be replaced before the surrounding ones. Where a pointwork complex includes diamonds or slips (which always have equalized timbering), the adjacent turnouts are often also laid with equalized timbering, as Bill suggested. Equalized timbering is always easier to arrange for the chairing -- in earlier versions of Templot equalized was the default. I changed it because so many folks kept telling me it was wrong (it wasn't of course, the timbering style depends on the site conditions). Now that Peco have introduced their 00 bullhead turnouts with equalized timbering, folks have gone quieter about it -- perhaps I should change it back? The truth is that neither is right or wrong, it needs to be set for each turnout as the situation demands. Which makes setting a switch-on default a difficult call. cheers, Martin. posted: 1 Jan 2020 23:10 from: Andrew Barrowman alan@york wrote: Here the timbers cross 1 1/2 tracks... an option for you.1953_301223_560000000.jpg Nice pic Alan! There's a pretty ...
191. Stub turnouts
... temperature fluctuations as well. With single rail Slide Points there is the chance in very hot weather that they will expand and lock the switch to one of the diverging roads. In very cold weather there is a chance that the gap will become too big the passing wheel set will destroy the heads of the rails and maybe even derail the vehicle. Matt M. posted: 12 Jul 2017 08:23 from: rodney_hills 134_120322_500000000.jpg Hello, The 'two-foot' gauge Festiniog Railway has a notable 3-way stub point in bullhead rail. http://www.photobydjnorton.com/FfestiniogRailway.html It was originally part of the passenger run round arrangements at Portmadoc Harbour Station, but has been moved to Minffordd Yard, see http://www.festipedia.org.uk/wiki/Minffordd_Yard this page also gives some history and also illustrates a 4-way stub. Regards, Rodney Hills posted: 12 Jul 2017 10:10 from: Ariels Girdle Out of sheer curiosity, are there stub points still in use in the USA? If not, when were they banned? posted: ...
... usual set of folding feeler gauges contains 25 thou and 15 thou feelers which can be combined to make 40 thou. They are very smooth and will stick together. They are stainless steel, so not affected by flux and no risk of being accidentally soldered. Alternatively, I believe 1.0mm crossing flangeway gauges are available from the EM Gauge Society. If that's not convenient, here is a trick you can use which is not affected by heat or solvent (unlike 40 thou plastikard, which may not be accurate anyway). Scale bullhead rail is 36 thou wide. Ordinary 80gsm office photocopier paper is 4 thou thick. So combining an oddment of rail with a bit of paper gives you an improvised crossing flangeway gauge for 00-SF (and EM). Rail+ paper should just fit snugly in the gap without force. Take care not to accidentally solder the rail though. If the gap ends up a little wider than the gauge it's not the end of the world, but ideally you shouldn't be able to get rail and two thicknesses of paper ...
... yet. In simple terms it is a double track oval with two branches, one double track to a reasonable sized station, the other single track to a simpler one. It will be based on BR(S) practice in the 1960s ..ish. I am not a novice and have been building railway models for many years. In the last few years I have built two end-to-end terminus to fiddle yard layouts. Both used templot and the track was built with SMP for plain line and copper clad soldered bullhead pointwork. I am very happy with both and I have learnt a lot, the second layout is much better technically than the first! I am not looking for slavish prototype fidelity but I want something that looks good and feels like the real thing. This jpeg is a general overview.1588_161717_090000000.jpg The attached box file shows where I have got to so far and I would welcome comments on the templot side of things. Please note that I have not really tackled timber shoving yet on this plan. That's for later. Turnouts are ...
... topic: 3617 C&L update 00 gauge common crossings with 1.25 mm flangeways posted: 25 Feb 2020 09:32 from: Hayfield I mentioned C&L are now supplying 00 gauge common crossings with 1.25 mm flangeways a few weeks back in RMweb and when it arrose again in another thread Martin was pleasantly surprised, supplies initially were limited due to production constraints. Their new 00 gauge track base is now fully available, sleepers in 60' panels, keys in chairs, two styles (mainline and branch) Code 40 bullhead rail has now arrived Over the next few weeks firstly the new 2 bolt chairs will be available closely followed by a new 3 bolt sprue New roller gauges now in stock including 00 with 1.25 checkways Parts of Templot Club may not function unless you enable JavaScript (also called Active Scripting) in your browser. Templot Club> Forums> Trackbuilding topics> C&L update 00 gauge common crossings with 1.25 mm flangeways about Templot Club Templot Companion- User Guide- A-Z Index Templot Explained for beginners Please click: important ...
... topic: 372 Prototype photo's& advanced info posted: 16 Mar 2008 15:26 from: Phil O Hi All I will be paying my first visit to the ESR this year at Easter, if anyone has request for any particular prototype photo's of trackwork (bullhead rail) I will do my best to get them. Closing date for requests is on Good Friday am. I will not be available to upload the photo's for over a week as after I leave the railway I go to Stourport (Martin be warned) for my parents wedding aniversary. For those who would like to get up close and personal to some flat bottom track laid to current practice or to see a 9F on 1000+ ton stone train Yeomans Quarry at Merehead in Somerset will be having an open weekend in June details will be confirmed later. Cheers Phil Last edited on 16 Mar 2008 15:27 by Phil O posted: 19 Mar 2008 22:05 from: Templot User Phil O wrote: For those who would like to get up close and personal to some ...
... :05 from: Martin Wynne Alan Turner wrote: I don't think it will work, not with a 1:23 crossing Hi Alan, There is no reason why a 1:23 V-crossing shouldn't work. Long crossings work just as well as short ones. The difficulty is in the actual building of it. Making a curved 1:23 fixed vee needs some careful work to get it right. As Jamie suggests, a swing-nose crossing may be easier to build, but it is not prototypical for bullhead track. See: http://www.railway-technical.com/Switched-Diamond.jpg (incorrect file name, it's not a switched diamond) By the way, 1:23 is very close to an "A" size switch blade (which is planed at 1:24), so you could assemble two such blades to make a 1:23 vee, with a bit of fettling. However, I think this turnout will be far too long for Mark's available space. regards, Martin. posted: 6 Nov ...
... We start with the magic fraction of 9/14ths. Which is the optimum ratio between flange thickness and flangeway gap. So with a flange thickness of 1.5mm that means a flangeway gap of 1.5 x 14/ 9= 2.33mm. It's silly to go to a second decimal place in the larger scales, so I suggest a crossing flangeway gap of 2.3mm. That needs to be a MAX to calculate the minimum wheel width and ensure full wheel support through the crossing. The prototype blunt nose width is 3/4" (bullhead, not GWR). The scale for Gauge 1 seems to be a bit variable, so let's say that is 0.6mm MAX blunt nose width. That should be wide enough to take a bit of abuse from heavy locomotives, especially if you adopt the prototype practice of taking the top of it down below the height of the wing rails, to allow for the coning angle on the wheel tread. We can now calculate the minimum wheel width, which is 2 x max flangeway gap,+ max blunt nose,+ ...
... . regards, Martin. posted: 16 Jan 2010 17:59 from: NeilD Thanks Martin, It might only take you five minutes but it took me at least two hours spread over 3 sessions to follow the tutorial:-) !! Neil posted: 16 Jan 2010 18:55 from: Martin Wynne Hi Neil, Box file attached. P4- DS8- on 1524mm. 8ft-6in timbering. Movable K-crossings (switch-diamond). 1:40 switch planing (as C switches). Bullhead- common 14" middle timber. Minimum radius is 897mm (35") -- may need a little gauge-widening. Timbering is generic -- may need some slight shoving if you have a specific prototype. Full-size images are in the Image Gallery: 2_161352_100000000.png 2_161353_170000000.png regards, Martin. Attachment: attach_723_995_p4_ds8_1524mm.box 393 posted: 16 Jan 2010 21:06 from: NeilD Martin, Many thanks- much appreciated. Neil Parts of Templot Club may not function unless you enable JavaScript (also called Active Scripting) ...
199. Flatbottom Flaw?
... . Since converting it to FB, have you reloaded it into 091c and saved it again? Have you tried printing it or exporting a file? Did the FB foot edges show correctly? regards, Martin. posted: 13 Nov 2011 12:33 from: Alan McMillan Hi Martin As requested I've attached the same section before I did the flatbottom conversion. It's fine. I have loaded it into 0.91c but the rail duplication showed up there too. I haven't been able to print the converted plan, it simply shows the bullhead rails without the FB feet although the feet do show on the workpad before the print preview comes up. See picture of the print preview below for how it printed. 412_130730_590000000.png Attachment: attach_1239_1684_Flatbottom_Flaw_B efore_Conversion.box 208 posted: 13 Nov 2011 17:55 from: Martin Wynne Hi Alan, Thanks for posting the .box files. The problem is that some templates were previously set to the no rails option in this sub-menu: 2_090523_110000000.png So the extra rails were not showing. After setting the head and foot (flat-bottom ...
... it. Martin. Attachment: attach_1281_1740_emgauge.jpg 515 Last edited on 21 Dec 2011 15:39 by Stephen Freeman posted: 21 Dec 2011 15:50 from: Martin Wynne Borg-Rail wrote: Err, Sorry, what I should have said is that the distance between the inner edge of the outer groove and the inner edge of the opposite inner groove on my EM gauges (C &L) is 16.2mm (fact), so why not? In that case the EM gauge tool is poorly made. Code 75 scale bullhead rail is 0.92mm (0.036") wide and the slots in the gauge tool should be 0.93mm (0.037") wide maximum. Accurate gauge tools are available from Brian Tulley for 00-SF. It does beginners no favours to suggest such bodges using the wrong tools. It's no wonder the 00 gauge standards are in such a mess when ideas like this are given currency. regards, Martin. posted: 21 Dec 2011 17:47 from: Paul Boyd Stephen wrote: It's not impossible to adjust using superglue- ...
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