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Search results for: Bullhead
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... not reproduce the foot of the flat bottom rail (unless I am missing something). I have built a number of flat bottom turnouts using my own templates and always rely on the position of the footer to fix the rail into the correct location on the turnout, especially when fixing the initial straight road. The problem of course is that without the footer being shown once the rail is in place you cannot see where the rail head should be located, making the template almost useless. This problem does not exist when using bullhead rail. To see what I have been up to check out: http://www.rmweb.co.uk/forum/viewtopic.php?f =8 &t =42746 and yes I need to include those double sleepers where the switch and crossing join the centre section (a common feature on the continent, not just Switzerland). Please give the reproduction of the foot your highest priority, or perhaps give me an indication of when you might introduce the upgrade with it as I am currently somewhat stuck. Thanks. posted: 9 ...
... No, don't do that. If you want 1:10, build 1:10. But make them switch-diamonds with movable K-crossings. Here's a couple of images to help explain. These are diamond-crossings, but you can add slip roads to make them into slips, just as for fixed K-crossings: switch_diamond_10bh.jpg© PWI switch_diamond.jpg© PWI Notice that in a flat-bottom switch-diamond (lower photo) the switch tips (points) are carried on two separate timbers. In a bullhead switch-diamond (upper drawing) both switch tips share a common wider centre timber. *If you use the proper width wheels for 00-BF they can't "drop" into the gap. But they can, and will, take the wrong road on fixed K-crossings of very flat angle. Using movable K-crossings for flat angles prevents this. regards, Martin. posted: 20 Dec 2007 10:27 from: John Lewis Paul Boyd wrote: That's the easy bit- the difficult bit, ...
... http://homepage.ntlworld.com/mickoo/Trains/B1312_14.jpg closer view of B1312 Martin I've 15 shots, some in detail of this turnout if you think they're suitable for your collection then let me know and I'll send them over, plus any others I have you might want, one odd one in the yard entrance has clamp lock FB blades fixed to a BH crossing. Thanks in advance Michael Attachment: attach_584_894_B1312_03_WEB.jpg 288 posted: 10 Jul 2009 16:51 from: Phil O Hi Micheal These are slide baseplates (chairs on bullhead rail) "Attached a reduced image of the turnout (B1312) at Ipswich, I'm confused about what look like blocks between the rails (circled green)" These blocks are to prevent the switch rail from twisting under load "above the slide blocks (circled white), are these rubber ?," The areas circled white are the exposed areas of the slide base plate for the tongue of the switch rail to slide on when the turnout is reversed. All these componts are cast iron or steel "the blocks ...
124. Switch blade spacing
... too big. Many years ago I read an article by Iain Rice where he advocated cut down "Dinky" hair grips Araldited together to give a joint clamp/gauge for setting point blades. This device would give a gap of about 1.3 mm which would seem to be much closer to the prototype gap of about 4 inches. What do other people use as a blade/stock rail gap in P4? Regards Arthur posted: 15 May 2010 08:38 from: Martin Wynne Hi Arthur, The prototype switch opening for bullhead track is 4.1/4". This equates to 1.4mm in 4mm scale. regards, Martin. posted: 15 May 2010 09:27 from: Arthur Budd Martin Wynne wrote: The prototype switch opening for bullhead track is 4.1/4". This equates to 1.4mm in 4mm scale. Many thanks Martin. On another forum Tim Venton suggested that Norman had got the P4 spacing wrong at 15.5 mm and that he has used 16 mm, which of course would decrease my near enough 2mm gap to about 1.5 mm ...
... topic: 955 Viaduct track -- BH on Waybeams posted: 16 Oct 2009 13:04 from: Martin Wynne If you are modelling track on a girder viaduct, here is an interesting detail pic posted on the Finescale Workshop forum. Bullhead track on waybeams, with adjustable turnbuckle gauge tie-rods: http://scalerail.phpbbhosts.co.uk/viewtopic.php?p =1940#p1940 Rockmill Viaduct, Cornwall, between St Blazey and Luxulyan. regards, Martin. posted: 16 Oct 2009 19:03 from: Alan Turner Only if you are a member unfortunately. Alan posted: 16 Oct 2009 20:23 from: Martin Wynne Alan Turner wrote: Only if you are a member unfortunately. Hi Alan, Why not join? It takes only a few clicks. No personal information is required: http://scalerail.phpbbhosts.co.uk/ucp.php?mode=register regards, Martin. posted: 16 Oct 2009 21:17 from: Phil O Hi Martin Martin Wynne wrote: Bullhead track on waybeams, with adjustable turnbuckle gauge tie-rods: With all ...
... flashing red. A B-7.5 in that position gets you to 72.1". There are a few further changes you can make to maybe increase the radius by an inch or two -- changing to a generic type of V-crossing for example gets you to 78.4" with a B-7.5, or lets you revert back to B-7.25. In some places you are using machined check flares, which suggests you are intending these to be flat-bottom? In which case you shouldn't be using the REA bullhead switches for those turnouts. If you go to template> switch options... you will find two ranges of switches for flat-bottom. The range of curved switches in BS-113A rail would be suitable for 10-15 year old track at your period. For your intended shunting operations you will surely need a run-round facility somewhere on-scene? Another crossover near the lower end of the main lines would do that. regards, Martin. posted: 25 Nov 2007 04:48 from: ...
... I'm using 00/EM profile wheelsets, including modern RTR wheelsets) I'm a little concerned about the resulting tip clearance of 2.2mm. The curvature of the blades matches the Templot template, so am I doing anything wrong or are my figures to be considered "the norm" please? Is the figure of 1.42mm (or close to) actually achievable whilst at the same time maintaining minimum clearance along the blade? Brian, A lot will depend on how your blade is mounted and how flexible it is. For a start, bullhead rail is more flexible than flat bottomed rail. And the flexibility of the tips of the point blades can depend on how you have filed them. So if your blades have a fixed mount at the heel end, then there are some variabels which can effect the flexibility at the blade tips. You might find that if you just go for the 0.67mm clearance, that you are only moving the tips about 1.4mm, but trying to achieve the 0.85mm clearance requires a greater force which, with the blade flexibility, requires the ...
128. point & splice rail
... any way to have point and splice rails at different lengths for example in a 1:7 crossing, point rail 13' 3" and splice rail 13' 9" Hi Geoff, Sorry, no. You can represent a custom rail joint on the template using a severely shoved bonus timber (reduce the width to zero). What is the prototype? In the vast majority of cases the splice rail length is set so that both legs of the vee are the same length. For example the usual dimensions of REA bullhead 1:7 crossings from the blunt nose are: Point and Splice assembled= 13'-10" Splice rail only= 13'-1.5" And for original inclined FB: Point and Splice assembled= 14'-0" Splice rail only= 13'-3" The couple of inches difference is accounted for by the changed blunt nose dimensioning, and the wider timber spacing at joints for FB. regards, Martin. posted: 17 Feb 2012 15:34 from: shawg info is taken from NERA's ...
... bit smaller, but the look is good. John posted: 19 Feb 2012 19:59 from: Hayfield Hayfield wrote: Phil Thanks I would like some help with designing some 0-16.5 turnouts please. Hopfully I have attached a file with a 1-4, 1-4.5& 1-5 turnouts on (if not I need help to attach the file). Sorry I have not tidied up the sleepers, but been at the Watford Finescale show all day I want to use 7mm sleepers with code 75 bullhead rail and chairs to 00-SF gauge The problems I can see are that the sleeper ends are too short, and that as I have selected 0 gauge the rails are too thick. In addition what would the best track centers be, I have used 50mm which is a tad too narrow. Also how do you save the, non standard gauge All advice and suggestions would be greatly recieved Thanks John Phil Thanks the 9' switch makes it a bit smaller, but the look is good. John Attachment: attach_1360_1818_0 ...
... Baseboard joiners and bolts fitted- I also decided that, as this is meant to be a "quick" project so that I can "play trains", I will use Peco track- actually works out cheaper than buying components and building my own, but will need some adjustment to the templates.... 1763_240654_320000000.jpg posted: 24 Oct 2018 22:03 from: Andrew Duncan Hello Richard Good to see you're making progress. I'll be very interested to see how the Peco track looks. I've always liked the proper bullhead look of it since I was a teenager. Kind regards Andrew posted: 25 Oct 2018 09:19 from: Hayfield Richard Many of those who build their own track use ready to run flexitrack, either for speed or as you have said economics. As for turnouts and crossings modellers forget Peco supply rail, plastic timbers and chairs which are competitively priced and far cheaper than their RTR counterparts and will alleviate the need to alter the templates Peco do a fast Mail order service if you have no local supplier Parts of Templot ...
131. Track close-ups
... topic: 646 Track close-ups posted: 28 Nov 2008 22:36 from: Martin Wynne Some track details, taken recently in the yard at Hull Paragon by Mick Nicholson. A bullhead crossing. The clean new galvanised chair screws, the paint markings on the wing rails and the lack of rail wear suggest this is a recent renewal. But this timber escaped: bullhead_crossing_detail1.jpg bullhead_crossing_detail2.jpg For comparison, a flat-bottom crossing: fb_crossing_detail.jpg A switch anchor. This prevents the switch rail from moving forward at the tip, which would upset the planing geometry: switch_anchor.jpg This anchor has been cut through: cut_switch_anchor.jpg Many thanks again, Mick. Martin. Parts of Templot Club may not function unless you enable JavaScript (also called Active Scripting) in your browser. Templot Club> Forums> Prototype pics> Track close-ups 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 ...
... from here? There is still a lot missing from the open source version, including the PDF exports and the entire sketchboard function. Should I be spending time on solving these issues? They are no 5-minute tasks. Or just leave the existing open source where it is for anyone who wants it and otherwise forget it? There is also the question of open sourcing my more recent work on Templot2. I am in the middle of a big update to the DXF exports for the 3D rendering and possible 3D printing of bullhead chairing. The code for that will need a lot of explanation and commenting to make it sensible for others to read, and I have not yet done a user interface for all the many settings or any user help notes. It seems that open sourcing everything creates a lot of extra work, and from the level of interest so far I'm not sure that it's really worth it. cheers, Martin. posted: 4 Sep 2018 14:19 from: Rob Manchester Hi Martin, Sorry you feel a little frustrated with ...
... topic: 644 Clamp-Lock hydraulic switch drives posted: 26 Nov 2008 17:46 from: Martin Wynne Mick Nicholson has sent some close-up pics of the BR Clamp-Lock design of combined hydraulic switch drive and facing-point lock. This is normally associated with FB track, but can also be fitted to bullhead. clamp_lock2.jpg This view also shows the chamfered style of switch planing: clamp_lock1.jpg clamp_lock3.jpg A detailed description of this design is in sections B3 and B4 of this document: Clamp-Lock data From which: clamp_lock_dwg.png Clamp-Locks on the movable K-crossing switches of a double-slip: fb_movablek_dslip.jpg Finally another pic from Mick, of an insulated stretcher bar joint (for track circuiting): insulated_stretcher.jpg Many thanks Mick. Martin. posted: 21 Apr 2010 18:30 from: Jim S-W Hi All A quick pic for you of Colin Craig's 4mm scale clamp lock details clamp%20locks%202.jpg HTH Jim Parts of Templot Club may not function unless you enable JavaScript (also called Active Scripting) in your ...
... and Inspection Depot. I'm wondering if someone with a bit more of an eye for permanent way might be able to shed some light on possible crossing angles from this picture. 13966522424_fd0e2eae2d_o.jpg Carlisle New Yard depot Jun75 by Alan Rintoul, on Flickr Not ideal I know, but images from this angle appear to be as rare as rocking horse proverbial. OS Plan Map here: Old Maps RMWeb Topic here: Carlisle New Yard Fuel and Inspection Depot Regards Matt posted: 20 Jul 2018 21:26 from: DM Nine out of ten bullhead points in sidings were 1 in 8. Parts of Templot Club may not function unless you enable JavaScript (also called Active Scripting) in your browser. Templot Club> Forums> Prototype pics> Carlisle New Yard Inspection depot 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 ...
... 11 Oct 2018 12:40 from: Martin Wynne Graeme Lewis wrote: I was surprised when you say the MR didn't use A7's (to use the more modern terminology). My understanding is that (within sensible limits), you could combine switches and vee crossings to suit any given situation. I would love to know if there is some reference giving more info on MR track work. Hi Graeme, Sorry, I didn't mean to suggest that the MR didn't have a turnout of that equivalent size. I meant that bullhead switches called "A" were introduced by the REA in the SRC designs of 1925, with specific dimensions. For example they are semi-curved switches with a switch radius of 482ft. No doubt the MR had a short switch of similar overall size but not identical. Bob Essery wrote some articles about MR trackwork in issues of Midland Record magazine. Sorry I don't have the ref numbers. The HMRS/Midland Railway Museum at Butterley is probably the best contact for more information, see: http://hmrs.org.uk ...
... topic: 693 Tandem turnout close-up posted: 16 Jan 2009 11:11 from: Martin Wynne Link: close-up view of the middle V-crossing on a bullhead tandem turnout. posted: 16 Jan 2009 13:10 from: Dave Summers For some reason, the link has become cropped and lost the 'h' of http. The link should be: For some reason, the link has become cropped and lost the 'h' of http. The link should be: http://ivansphotos.fotopic.net/p55209918.html Regards Dave Parts of Templot Club may not function unless you enable JavaScript (also called Active Scripting) in your browser. Templot Club> Forums> Prototype pics> Tandem turnout close-up 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 ...
... fishplate between the chairs. That usually means 24" or 25" centres under rail joints. But ideally they mustn't be too close together side-by-side or end-to-end, so that the gang can dig out under them if they need packing or tamping, or replacement. If you search back through the forum you will find a lot of previous discussion about all this. I summarised some of it here: http://www.rmweb.co.uk/community/index.php?/topic/127840-peco-bullhead-points-in-the-flesh/page-22#entry2942656 cheers, Martin. posted: 15 Oct 2018 14:26 from: Phil O On last week's episode of Paddington 24/7 the track gang had too replace a spliced turnout timber, in a couple of hours of possession. Phil. posted: 15 Oct 2018 14:35 from: Martin Wynne Phil O wrote: On last week's episode of Paddington 24/7 the track gang had too replace a spliced turnout timber, in a couple ...
138. Outside slip
... and have reliable running at these angles. Welcome and appreciate any comments, as this is well outside of my knowledge area. Kind regards Dave Attachment: attach_418_634_gwr_terminus_08_11 _18_0950_34.box 301 posted: 18 Nov 2008 17:07 from: Martin Wynne Hi Dave, That's great! Proper partial templates for the slip crossings too! Many thanks for uploading it. There is no problem with those angles. Unlike K-crossings there is no effective limit on V-crossings, apart from the difficulty of actually making the very slender vees. Generally bullhead V-crossings stop at 1:20, so you are well inside that. Provided the check rails are set correctly, they will run fine. By the way, it's not a semi outside slip -- it's a fully outside sip. You are using the incorrect Iain Rice terminology. The "outside" part means that the slip switches are outside the diamond. Both of these are. A "semi" outside slip has one switch inside and one outside the diamond -- a rare thing, but there ...
139. Single Slip
... straight track. Templot is drawing a switch-diamond instead (i.e. movable K-crossings) because that is what is required in this situation. Here are a couple of images to help explain.These are switch-diamond-crossings, but you can add slip roads to make them into slips, just as for fixed K-crossings: switch_diamond_10bh.jpg© PWI switch_diamond.jpg© PWI Notice that in a flat-bottom switch-diamond (lower photo) the switch tips (points) are carried on two separate timbers. In a bullhead switch-diamond (upper drawing) both switch tips share a common wider centre timber. For more information about all this, click: topic about switch-diamonds. Ask again if you need more. regards, Martin. posted: 12 Feb 2009 12:27 from: Martin Wynne p.s. Scott, Here is an excellent picture from Mick Nicholson showing a flat-bottom double-slip with movable K-crossings: fb_movablek_dslip.jpg© thanks to Mick Nicholson regards, Martin. posted: 12 Feb 2009 13:01 ...
... of interest, both ranges are moulded by the same company and probably with the same material, as are our S Scale Society chairs. That certainly was the situation a year ago when I checked the location of the moulds for the S Scale chairs. Jim. Jim Off topic a bit but what code rail do the S gauge chairs take please John posted: 2 May 2018 16:46 from: Jim Guthrie Off topic a bit but what code rail do the S gauge chairs take please John, We had Code 87 bullhead specially drawn for us and the chairs were made to fit the rail. They are a very good Goldilocks fit- not too tight, not to loose, but just right. Jim. posted: 2 May 2018 16:54 from: Hayfield Pity I want some chairs for a 7 mm narrow gauge layout and for visual effect have settled on code 100. Was hoping S gauge chairs and rail might fit the bill. Back to the drawing board Thanks for a swift reply Last edited on 2 May 2018 16: ...
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