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Search results for: Bullhead
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... preferred crossing angles, switch blade lengths and timbering details used in the period up to 1970. posted: 30 Nov 2015 13:34 from: Martin Wynne 4railsman wrote: Whilst there is a table on page 46 of the link above, which gives a list of crossing angles, it also refers to the various "Switch Types" listing A through E but not providing illustrated details of what any of these switch types actually look like. Hi, LPTB was the 5th of the "Big Four" and used the same bullhead track as everyone else. These switches are the bog-standard REA semi-curved bullhead switches. They are created by default in Templot -- you can see the dimensions by going to real> switch settings... and clicking the show switch info button. For more info see also: http://templot.com/martweb/gs_realtrack.htm http://templot.com/martweb/templot_forum.htm and also on the Scalefour web site. For printed information you need BRT up to the 3rd edition (1964). See ...
... gauges but they are HUGE. I got some scale HO spikes from the Proto87 guy on your side of the pond a few years ago. They come etched on a sheet and they are very, very small. Just been thinking that maybe copper timbers to solder the rail to and then cosmetic spike heads and nut/bolt/washer detail may be good. Food for thought. Thanks very much for your input. Rob posted: 8 Feb 2018 01:17 from: Martin Wynne Hi Rob, Here's some Code 87 bullhead rail and matching chairs: http://www.s-scale.org.uk/track.htm regards, Martin. posted: 8 Feb 2018 02:04 from: Andrew Barrowman Rob Manchester wrote: Hi Andy, Yes, just had a look through 'Britains Light Railways' a nice survey of many light rail lines in the UK and you are quite correct that many have FB rail either spiked to the timbers or held there by chair-type screws in biggish square washers that press down either side of the rail foot. The description of ...
... is 6 inches high. The fractions are not very relevant here It is not too obvious when seen from a distance, but it not something that I could accept. Peco track uses a flat bottom rail held onto the sleepers with large bits of moulded plastic that look vaguely like chairs. Prototype flat bottom rail is actually fixed to sleepers with a fairly thin baseplate and clips that are almost invisible in this scale. There are detailed variations here but the clips are always quite small. Chairs are cast iron blocks used to hold bullhead rail onto sleepers. They are not relevant for flat bottom except for certain positions in pointwork where clips cannot be used; mainly where the switch blades move. As others have pointed out soldering to PCB timbers is probably the most straightforward way of of producing pointwork. The 2MM Scale Association provide PCB sleepers and lengths of PCB strip for pointwork to members. There are two main problems to be faced. 1. PCB strips are not the same thickness as PECO sleepers so all pointwork will have to be raised in some way ...
... topic: 716 Adjustment Switches posted: 28 Jan 2009 16:44 from: richard_t I've templotted an f/b adjustment (nee) expansion switch, but on looking back at the plan they aren't very clear- as it's just 4 differently spaced 12" sleepers. Is there a way, cunning or otherwise, that I can simulate the two strengthing rail strips so they stand out a bit more. (one form of the straps are two lengths of bullhead rail on their side spaced 457mm from the inside of the foot of the rail and are 2286mm long). No doubt the metric dimensions are standard imperial, but I don't have time to do the conversion! Thanks Richard. posted: 28 Jan 2009 16:59 from: Martin Wynne richard_t wrote: Is there a way, cunning or otherwise, that I can simulate the two strengthing rail strips so they stand out a bit more. (one form of the straps are two lengths of bullhead rail on their side spaced 457mm from the inside of the foot of the rail and ...
65. GWR Chairs
... , but it's 3 bolt chaired. I confess for my GW layout I took the expedient view that I did not want to make up track panels and used flextrack. Flextrack might be an interesting proposition on an airplane nowadays. Until Heathrow completely lost the plot earlier this year over their security arrangements you could hand carry a box of 1 meter lengths on transatlantic flights Now I suspect that if you buy some you'll need to cut it to 50cm lengths and place it in your hold baggage. The alternative is to buy lengths of bullhead rail and track bases separately. C&Ls site say they are at Telford. Exactoscale appear not to be there. I hope this is of use to you. You can hack chairs about to get bridge chairs and other specialized stuff. Both systems need ABS solvent to bond the chairs to you chosen sleeper medium. I hope this helps. Regards Nick posted: 8 Aug 2007 15:12 from: Martin Wynne Paul Boyd wrote: It sounds like you need to buy the GW Study Group's "bible"- ...
... the 4mm hobby between finescale and RTR -- build or buy -- has largely disappeared. But not for track. There the distinction remains and I don't think it will ever be bridged. If you build your own track you can have it in infinite variety of sizes and radii, on flowing curves, closely fitting to your space, matching any prototype formation you can find. If you buy it you are always going to be limited to a small selection of snap-together pieces. Even if Peco produce a perfect bullhead track system for 00, you still won't be able to have a 1:7.5 crossover on 11 chains radius with extended check rails and NER-style switches. Callum, if you are reading this, you are welcome to discuss 00-SF here. You can post your track plans and layout progress pictures here just the same as on RMweb. I'm running this forum and you have my word that no-one will be allowed to make fun of you here. Not that I imagine for a moment that anyone ...
... topic: 3827 A new range of chaired bullhead turnout kits in 00 and EM posted: 3 Dec 2020 17:03 from: Martin Wynne See: http://www.rmweb.co.uk/community/index.php?/topic/160234-new-range-of-simple-to-assemble-00em-gauge-pointwork-kits/ Martin. posted: 3 Dec 2020 19:55 from: Rob Manchester Hi Martin, Thanks for the link to the RMweb thread. They look pretty good- wonder what Peco is thinking now? Rob posted: 7 Dec 2020 19:37 from: Martin Wynne Pleasant surprise on the price of these kits: http://www.rmweb.co.uk/community/index.php?/topic/160234-new-range-of-simple-to-assemble-00em-gauge-pointwork-kits/&do=findComment&comment=4222677 Martin. Parts of Templot Club may not function unless you enable JavaScript (also called Active Scripting) in your browser. Templot Club> Forums> Trackbuilding topics> A ...
... crossings, as the rails should be vertical in these anyway. Regards, Bruce Boldner. posted: 14 Nov 2007 20:35 from: Martin Wynne Bruce Boldner wrote: I use the roller gauges for building common crossings, as the rails should be vertical in these anyway. Hi Bruce, I've seen this stated elsewhere, and I'm not sure where it comes from. I know the V-crossings in the Exactoscale kits have all vertical rails for ease of manufacture, but that doesn't make it prototypically correct. For all bullhead track, and flat-bottom track prior to about 1970, only the nose ends of the vee point and vee splice rails are vertical. For the common sizes we use, 1:6 to 1:9, there is a twist in the rail between the C and D chairs* (3rd and 4th from the nose) to return the rails to a 1:20 cant for the remainder of their length. All the other rails in the V-crossing, including the wing and check*** ...
69. Track Gauges
... track gauges mentioned are pretty similar to the 0-FS ones I already have, so.... Is there a definitive spec for 0-SF (tolerances etc)- I think it would be best to be able to point to somewhere and say that's where I got the info from, to avoid, er, "debates"! Rail- it looks like Peco for flat bottom rail simply on ease of obtaining it (relatively speaking of course), but what would be the "best" spec for bullhead for 0-SF? The three point gauges.... I presume (never used one, so I'm guessing) that the point of the three point gauge is to provide "automatic" gauge widening on bends (as mentioned in a previous reply), so the length of the sides of the triangle is critical. Since Mr. Pythagoras might as well have had a nice holiday instead as far as my maths goes, can anyone suggest (or be really clever and work out) the optimum dimensions for ...
... topic: 3468 EMGS gauge narrowing issue posted: 31 Jul 2019 10:17 from: Hayfield There is an interesting reply about the EMGS flexitrack gauge narrowing on RMweb http://www.rmweb.co.uk/community/index.php?/topic/139084-emgs-commissions-peco-for-rtr-em-gauge-bullhead-trackturnouts/page/19/ second from last post at the bottom of the page Anyone else noticed this? posted: 1 Aug 2019 01:23 from: Rob Manchester Hayfield wrote: There is an interesting reply about the EMGS flexitrack gauge narrowing on RMweb http://www.rmweb.co.uk/community/index.php?/topic/139084-emgs-commissions-peco-for-rtr-em-gauge-bullhead-trackturnouts/page/19/ second from last post at the bottom of the page Anyone else noticed this? Hi John, Yes I noticed the posting. I penned the post just prior to it that Penlan was responding to. I was just about to order some from the EMGS as it seemed ...
... the crowd-funding model C&L are utsing? I cannot find any detailed information on the website. If I order 1 meter of assembled P4 track does that count or does it need to be a (much) larger quantity? David C Last edited on 31 Jul 2019 12:34 by Hayfield posted: 31 Jul 2019 12:33 from: Hayfield Phil has put a bit more information about the track base and crowdfunding on C&L's website Update about crowdfunding details on C&L's website NEW CODE 75 BULLHEAD FLEXITRACK FOR EM& P4 60 FOOT TRACK PANELS SELF ASSEMBLY WITH Hi Ni NICKLE SILVER RAIL 20 METER PACKS. THIS IS CROWD FUNDING PROJECT THIS IS A CROWD FUNDING PROJECT WITH NO FIX DATE TO SUPPLY, IF SUFFICIENT RESPONSES ARE RECEIVED AND I HAVE 75% OF COST REQUIRED I WILL SELF FUND THE REMAINING BALANCE. FUNDS ARE HELD IN SEPARATE ACCOUNT TO THE MAIN BUSINESS. NEW THICK 1.5 MM SLEEPER BASE BRANCH LINE IN EM AND P4 FORMATS TO THE SAME STANDARD AS THE NEW OO LAST THREE IMAGES ABOVE CODE 75 BULLHEAD ...
... wheel standard I doubt if it will come, unless someone commissions a new chassis. Hark back to the days when the whitemetal kits ran of Jinty chassis !! Edit How about a 3D print using Markit wheels!! Last edited on 7 Nov 2018 07:45 by Hayfield posted: 30 Nov 2018 12:16 from: Martin Wynne Some pre-production pictures: http://www.rmweb.co.uk/community/index.php?/topic/139084-emgs-commissions-peco-for-rtr-em-gauge-bullhead-trackturnouts/page-15#entry3383078 That looks very good. After all these years, it's hard to believe that such things are finally being made by Peco, or at least, in their factory. Martin. posted: 30 Nov 2018 15:18 from: Hayfield On the face of it look to my eye better than Peco's own 00 gauge ones A question or two, should the common crossing have a slab and bracket chair? Secondly there seems to be a infill between both wing rails and Vee posted ...
... wrote: When you choose NMRA O scale standards, Templot does not adjust the timbering to the required format. i.e. it stays on UK settings, which are wrong for the USA. Hi Stephen, That's correct. Changing the gauge and scale does exactly that, and no more. It changes the model scale, the track gauge, the flangeway gap, the flangeway end gap, and the nominal double-track spacings. The setting makes no reference to any prototype, which remains unchanged. If that is REA UK bullhead before changing the scale/gauge, it will be the same afterwards. For all Templot knows, some modellers may want to model UK bullhead using the NMRA O Scale standards. If you want to model USA-style prototypes, you need to customize the template accordingly. Even if you want to model them in EM. For the timber customizing, don't use the shove timber functions, see: http://templot.com/companion/timber_spacings_overview.php It would be utterly impossible for Templot to know all the prototype dimensions world ...
... produce some chairs and sleepers. I'm looking to purchase chair drawings or even full 3d cad drawings, preferably GWR 3 hole chairs to start off with. Hi Tom, Most GWR chairs had 2 holes. The REA chairs used by other companies had 3 or 4 holes. Are you looking for CAD drawings of the raw chair casting, or with screwheads and key in place? If the latter you need to specify the model scale and details of the model rail section. For example, most 0 gauge modellers use code 125 bullhead rail, even though the common prototype BS-95R bullhead rail scales to code 131. I've never understood why that is, but it does mean that the key-top dimensions have to be modified to fit, and also to allow for the greatly overscale web thickness in all model rail sections. Also the keys are tapered wedges which normally remain projecting from the chair on the side from which they were driven. So you also need to specify which side, and by how much they remain projecting. Very soon Templot ...
... it's the location and application that distinguishes them. I recollect a discussion on this matter in this forum a while back... Regards, Rodney Hills posted: 26 Jul 2018 09:11 from: Martin Wynne rodney_hills wrote: Your immediately preceeding post mention catch poInts on gradients. Actually what your original thread is about TRAP points Hi Rodney, We have been here many times before. The term "trap" refers to the function of a set of points, a term used by the signalling and operating departments. In bullhead days the physical object was generally known in the Permanent Way departments as "catch points" and is shown as such on the manufacturing drawings. See for example the whole chapter on "catch points" in David Smith's GWR book: cvr_track_200px.jpg http://gwsg.org.uk/GWSG_Publications.html Templot is about track, and defaults to bullhead, so that is the term we use: 2_260347_230000000.png which shortens a turnout template to contain only the switch. The "trap points" function may be implemented as a set of catch points, or ...
... topic: 900 Chairs for Straight Heel Switches posted: 18 Jul 2009 20:21 from: Richard Spratt I'm modelling three pre-group companies in South Wales, Barry, Rhymney and the Pontypridd, Caerphilly& Newport. The first challenge has been to discover what type of track they each used. The Rhymney still had a considerable amount of flat bottom rail in use at the grouping according to Kidner, so flat bottom it will be. Photos of Barry track show flat bottom, inside and outside keyed bullhead. So I've decided to go for bull head as Penrhos was a later build. For the PC&N, I've found a couple of photos taken at Treherbert, Groswen and Pontypridd which show outside key bullhead. The next challenge has been to find out about the rail chairs used on bullhead straight heel switches. So far I've turned up a blank. Were the chairs after the heal special chairs? Or just normal chairs squeezed in? Many thanks Richard Last edited on 19 Jul 2009 14:41 by Richard Spratt Parts of Templot ...
... crossings. Templot is drawing a switch-diamond instead (i.e. movable K-crossings) because that is what is required at this angle. Here are a couple of images to help explain: switch_diamond_10bh.jpg© PWI switch_diamond.jpg© PWI regards, Martin. posted: 16 May 2012 01:06 from: Andrew Fendick Thanks very much for that information Martin. Sorry to have troubled you. posted: 16 May 2012 07:08 from: Stephen Freeman Hi, A small point but the timbering appears to be slightly different from Bullhead to Flatbottom. Does Templot correct this or is some timber manipulation called for? posted: 16 May 2012 13:07 from: Martin Wynne Borg-Rail wrote: A small point but the timbering appears to be slightly different from Bullhead to Flatbottom. Does Templot correct this or is some timber manipulation called for? Hi Stephen, Yes. Bullhead switch-diamonds have a single timber at the centre carrying both switch tips. Flat-bottom switch-diamonds have two separate timbers close together. Templot draws the timbering accordingly ...
... : bewdley_signal_1040x800.jpg Martin. posted: 17 Apr 2018 22:55 from: Martin Wynne Back to August 1969. Bridge Street, Llanfair Caereinion: llanfair_caereinion_1969_800x760.j pg llanfair_caereinion_shop_1969_800x 672.jpg St. Mary's Church, Llanfair Caereinion: llanfair_caereinion_church_1969_80 0x800.jpg Ilford HP4 developed in Johnsons Unitol. I've obtained an air blast gun which has helped with eliminating dust specks from the negs. http://www.geograph.org.uk/photo/5742473 http://www.geograph.org.uk/photo/5743305 Martin. posted: 22 Apr 2018 21:14 from: Rob Manchester Another use for bullhead rail. Upside down, done that a few times An ex-railway bridge that carried traffic from the Wigan and West Leigh Junction branches. 2001_221606_030000000.jpg Taken on a smartphone, Developed in my pocket on the way back to the car. Rob posted: 22 Apr 2018 21:45 from: Martin Wynne Rob Manchester wrote: Taken on a smartphone, Developed in my pocket on the way back to the car. Thanks Rob. Just looked at the full-size version in the gallery: gallery/2001/original ...
... as a result of my ignorance. I now test the throat gap with the Crossing Flangeway gauge and ensure it is a very loose fit. If it is tight then I know there is a problem to resolve. I had better close now before this thread wanders even further off track. Regards Tony. posted: 6 Nov 2014 00:11 from: Martin Wynne Tony W wrote: I would expect it to be similar for Bull head track, but do not have the figures. Hi Tony, The knuckle gaps for bullhead (in mm) are in the 2nd table on this page, although I think the data contains some typos: http://templot.com/companion/prototype_information.php I had better close now before this thread wanders even further off track. It will be an odd topic which doesn't. regards, Martin. posted: 6 Nov 2014 00:12 from: Tony W Hi Julian. First of all I would like to congratulate you on a job well done. There are a couple of very minor things to comment on ...
... assembling it. Even easier if you use a disc sander. Here is some stuff I have posted before, showing 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 the end down to the web 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 side notch in it to receive A as shown. The filing does not need ...
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