Templot Club Archive - Search Results
To search again, click the Back button in your browser.
Search results for: blunted
78 results found.
4 pages of results.
... reply first, although I understand your frustration. I now need to post a reply there to clarify some misunderstanding. regards, Martin. posted: 25 Feb 2011 12:12 from: BruceNordstrand Ok, definitely something going on somewhere... Just printed a #6 turnout from my plan and one directly from the USA box file and they are different even though they both say #6 US Style turnout. Here's some data from both of them Mine: switch front= 18.96 vertical lead= 185.63 actual lead= 186.51 blunt nose to timber A= 17 US turnouts box file version (sized up from the #5 in the file) switch front= 19.83 vertical lead= 166.07 actual lead= 166.96 blunt nose to timber A= 17 Now, using David Honers turnout calculator spreadsheet I see that the lead of a #6 turnout, based on AREA 1941 data for example, is closest to the USA turnout box file version of the number 6 with the lead at 166.6595382 mm Interesting.... posted: 25 Feb 2011 12: ...
42. New user
... solder also reduces the risk of it coming apart later if you are using soldered track construction. V is the result after filing as shown, or making two cuts on the sander. The bulk of the metal can be quickly removed with a coarse file or metal shears before finishing on the sander or with a fine file. If sanding, note that the solder dust is toxic -- take precautions to contain it. Note how this method results in solid metal at the tip with no undercut. The final tasks are to blunt off the nose as shown, to a scale width of 3/4" (bullhead) or 5/8" (flat-bottom), and to re-instate the rail-head corner radius on the filed areas. A few strokes with a fine file and a final polish with abrasive paper will do that. It's also a good idea to take a few thou off the top of the vee nose so that it dips down slightly below the level of the wing rails. This allows for the coning ...
... 0-MF it is not possible to build working loose heels in the correct position, and achieve the correct flangeway gaps. I would build it as flexible switches. Remember that each short blade works with the opposite long blade. Good luck with the stretcher bars! File attached. regards, Martin. Attachment: attach_623_911_3_throws_richard_la mbert_1.box 376 posted: 29 Jul 2009 09:13 from: Alan McMillan Hi Martin, Richard Thanks for the tidying up you've done. The check rail you mentioned has a point on it at the "blunt" end already. I've attached a blown up picture to show what I mean. Regards Alan Attachment: attach_624_911_3Throw_Flared_Check rail.png 1064 posted: 29 Jul 2009 09:29 from: Martin Wynne Alan McMillan wrote: The check rail you mentioned has a point on it at the "blunt" end already. Hi Alan, Yes, I saw that. But the tip needs some flare angle on both sides to avoid catching the flanges in the trailing direction. You could do that by using a blunter vee to make the tip ...
... posted: 3 Jul 2013 10:56 from: Martin Wynne Hi Arthur, It's called a K-crossing point rail. Make it the same way as for the V-crossing point rail. If you use filing jigs, here is the intended way of using them to ensure solid metal at the tip: http://www.rmweb.co.uk/community/index.php?/topic/55974-emg-society-crossing-and-switch-jigs/#entry682447 Note that for K-crossings, the point rail is blunted off to 5/8" scale width instead of 3/4" blunt nose for V-crossings. regards, Martin. posted: 3 Jul 2013 12:42 from: LSWRArt Martin, Thanks for the very quick response. Now I can get back to the filing this afternoon. Best wishes Arthur Parts of Templot Club may not function unless you enable JavaScript (also called Active Scripting) in your browser. Templot Club> Forums> Trackbuilding topics> Diamond crossing construction about Templot Club Templot Companion- User Guide ...
... more span clearance. In other words when setting wheels on an axle, BEF gives you the maximum separation and BB gives you the minimum separation. In summary I suggest: TG track gauge: 9.0mm MIN. CG check gauge: 8.25mm MIN. CS check span: 7.5mm MAX. CF crossing flangeway gap 0.75mm MIN. BB wheels back to back: 7.65mm MIN. BEF wheels back to effective flange: 8.25mm MAX. In addition the crossing flangeway gap must not be more than half the wheel width (or wheel width minus blunt nose width, if you are using prototypical blunt nose vees). regards, Martin. posted: 14 Jan 2011 15:06 from: M Wright Martin. thanks for latest message. You have set the information out very clearly for me. I will set about making a set of track gauges to these dimentions and report how i get on. Regards, Malcolm posted: 14 Jan 2011 19:32 from: Nigel Brown Malcolm. Thanks for the info. Was just wondering what would happen if you whacked a ...
... UK were made with the rails vertical, to avoid these problems and allow a much smaller range of baseplates to be needed. *Some modellers even go to the length of filing a nick in the wing rail in order to bend a sharp angle at the knuckle, which looks awful and is entirely unnecessary, and looks nothing like the picture above. ** Well worth replicating in he model, for much smoother running. Here I have added the gauge lines in yellow, and you can see that the vee nose is blunted back from the gauge intersection (fine point, FP), and taken down below the level of the wing rails. Only a few thou is necessary in the model to reproduce this, but it can make a big difference in the running quality: 2_270449_340000000.jpg regards, Martin. posted: 6 Apr 2011 00:01 from: Rob Manchester Hi Martin, Thanks for the reply and the pictures. I am making sure that my vees are blunt enough and drop down slightly below wing rail level to give the wheels a ...
... will grow much longer: 2_020617_360000000.png The <-- symbol on the list means that the video is not yet downloaded, so there will be a slight delay while Templot downloads it. After which the <-- symbol will not show, indicating that the file is already downloaded and can play immediately as often as you wish. The <-- symbol will therefore also indicate if any videos are new or have been revised since you last watched them. V-crossing labels: In track building the positioning of the vee blunt nose can be tricky because the relevant template detail is obscured when the timbers are attached to the template. So I have added new V-crossing labels in a similar style to the switch labels. The FP marker is seldom needed during construction, but I feel that it is necessary to have both so that the meaning of the blunt nose marker is clearly differentiated from it: 2_022328_040000001.png These labels are likely to get a bit messy in complex formations with multiple partial templates, so they can be turned off in the output ...
... LNWR 12ft Straight Heel Switch, with a 'V' crossing of 1in 8 (CLM); generic V-crossing. (shown in image below). Here, I have assumed CLM angles were used by the LNWR, although, have no documented confirmation of this, but am still trying to find out. The Turnout radius for the rail gauge face works out quite well being, 2375.87mm= 593.9675ft near enough 9 chains (594ft). Also the lead works out well too, Template Actual lead (switch toe to blunt nose)= 67.905 -12= 55.905ft (the drawing shows 55ft 1in), just a tad out. I managed to calculate the "A" Timber centre to blunt nose tip as 4in, and is confirmed on the drawing I have put in the Image Gallery. This drawing is a scratch drawing I did which contains all the information "bits" from several of the original drawings plus some details that I have added where the info was not quite clear, and is ONLY related to a 12ft Heel switch, ...
... a penny washer to hand you could drill a hole in an old coin, or use something else. Turn the vee round on the block to make the second cut. The result is as shown after making two cuts on the sander. If necessary the bulk of the metal can be quickly removed with a coarse file or metal shears before finishing on the sander. The end result is an accurately aligned vee comprised of solid rail at the nose. All that then remains is to fettle the running edges at the tip and blunt back the nose to the specified width as shown on the template (0.25mm/10 thou for bullhead in 4mm scale). It's a good idea to take a few thou off the top of the nose so that it dips down slightly below the wing rails. This allows for the coning angle on the wheels as they run off the wing rail onto the nose, producing smoother running. But don't overdo it. N.B. Wear a mask while sanding and wash hands afterwards. The sandings will contain lead from the solder ...
... for the switch blade tips and so protect them from wheel damage. This next diagram below shows this alternative straightcut pattern switch with a joggled stock rail. joggle-1.gif Instead of a plain set in the stock rail at B, it is joggled sideways between positions A and C, with the maximum deflection from its previous unjoggled alignment being at the blade tip position B. In bullhead track the joggled section is always created by bending the rail rather than by machining a notch in it. The switch blade is planed to a blunt tip (straightcut), to a thickness corresponding to the amount of joggle, which has been exaggerated in this diagram for clarity. Apart from a rounded corner at the tip the blade is the full height of the stock rail and plays its part in supporting the wheels along its full length. A straightcut switch can often be identified in photographs by showing a shiny top on the open blade all the way to the tip. joggle-2.gif In defining a joggled switch, two dimensions are needed. The joggle depth ( ...
... . The result is as shown after making two cuts on the sander. If necessary the bulk of the metal can be quickly removed with a coarse file or metal shears before finishing on the sander. Use a fine-grade sanding disc on the sander plate. If the vee gets too hot while sanding stop and dip the block in a bowl of cold water. The end result is an accurately aligned vee comprised of solid rail at the nose. All that then remains is to fettle the running edges at the tip and blunt back the nose to the specified width as shown on the template (0.25mm/10 thou for bullhead in 4mm scale). It's a good idea to take a few thou off the top of the nose so that it dips down slightly below the wing rails. This allows for the coning angle on the wheels as they run off the wing rail onto the nose, producing smoother running. But don't overdo it. N.B. Wear a mask while sanding and wash hands afterwards. The sandings will contain lead from the solder ...
... place on a left-hand straight turnout: 2_221547_480000000.png All the dimensions for this are global variables calculated by a routine called gocalc (the generator). This is called many, many times while Templot is running. For example if you are adjusting the crossing angle with F9, it will be called every time Windows reports the mouse having moved one or more pixels on the screen. The variables are global so that they can be used anywhere in Templot if needed. For example the variable bnx is the x dimension to the blunt nose, g is the track gauge, etc. All the dimensions are in mm to extended precision (80-bit, 10-byte). After being curved to the required main road radius and transformed (shifted/rotated) to its proper position on the trackpad grid, this template gets drawn as the control template. The dimensions are referenced from the template datum, which is the gauge-face of the straight stock rail, at CTRL-0. This template datum is marked on the trackpad as a ...
53. My First Points
... edited on 30 Jan 2011 13:27 by BeamEnds posted: 30 Jan 2011 13:38 from: JFS Hello Richard, It looks very nice! I like the planing of the wing and checkrail ends. Just a couple of small concerns- are you sure that the check rails are long enough? I would have expected them to cover 5 sleepers rather than just three. Also, it looks like you have taken both the point and the splice rails to the point of the vee, whereas on the prototype, the blunt nose was formed entirely in the point rail as per this illustration from Martin... gallery/2 /thumbs/2_201959_350000000.gif Good Luck, Howard posted: 30 Jan 2011 13:46 from: JFS Sorry, did not link the image correctly... gallery/2 /original/2_201959_350000000.gif Also this example from David R gallery/100/original/100_170919_400000000.jpg Best wishes, Howard posted: 30 Jan 2011 13:47 from: BeamEnds Hi Howard, yes, the check rails are probably short, but as ...
... topic: 189 GW special chairs posted: 6 Oct 2007 01:20 from: Phil O Hi all Here is tonight's installment. A 1 in 3.1/2 K or elbow crossing the blunt nose/ or the stock rail may need to be adjusted slightly to allow none prototypical clearances. Cheers Phil Attached file: 1in3point5_kxing.dxf. (click link above with right mouse button, then select Save Target As... or Save Link As...) posted: 6 Oct 2007 01:22 from: Phil O Slab& bracket slab_bracket.jpg posted: 21 Oct 2007 20:38 from: Bruce Wilson Phil's 3.1/2 K dxf converted to PNG Bruce Wilson Barrie, Ontario 1in3point5_kxing.png Parts of Templot Club may not function unless you enable JavaScript (also called Active Scripting) in your browser. Templot Club> Forums> Share and show> GW special chairs 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 ...
... not know how to interpret the switch type for the RH turnout from the component data. I have attached the template Box file for reference. Any assistance would be appreciated. Regards Roger Attachment: attach_2828_3425_Shunting_Plank_10 4_Tandem.box 141 posted: 4 May 2019 06:20 from: Martin Wynne Hi Roger, Welcome to Templot Club. Thanks for providing the .box file. For the check rail, the essential requirement is that the wheels should be fully checked opposite the gap in the crossing, i.e. between the wing-rail knuckle and the blunt nose of the vee. This is to prevent the wheels moving sideways into the gap. In other words the flared ends on the check rail should not extend into the yellow area here: 2_040109_250000000.png For the wing rail, the essential requirement is that the flare angle should not begin until the wheel is fully supported on the nose. In practice, it would be rare not to have the full wing rail width in the whole of the "A" chair, and a rule of thumb is not to extend the flare ...
... Wynne Brian Nicholls wrote: Now I'm sure you know that large acute crossings mean you have a larger gap between the crossing rails contact points, therefore more wheel drop into that gap Hi Brian, I'm sorry to put it so bluntly, but this is just plain WRONG. I feel so strongly about having this common misinformation on here that I'm tempted to delete your message entirely. The three factors controlling wheel drop are: 1. The width of the wheels. 2. The width of the flangeway gap. 3. The blunt-nose width of the vee tip. The angle of the crossing doesn't come into it at all. It's true that if the wheels are too narrow, the effects will be worse on flatter crossings. But provided they are the correct width for the track standard, they will remain fully supported and will never drop in, no matter how flat the crossing angle. I've written at length about this in the past, including on RMweb, and when I have a bit more time I will find the links. regards ...
... swiss-made blades)and a soldering iron (I have three, a 15W, a 25W and a 50W temperature controlled, with about 6 or 7 differently shaped bits for getting into tricky places). For myself, I am not a a time served artisan, I just got a lot of practice from making scrap!!. Best Wishes, Howard. Howard, This is excellent advice for everyone, novice and craftsman. Particularly the part about thowing out old tools. It is amazing how many work benches contain blunt, chipped, bent and generally useless tools. I gave up conventional soldering irons a while ago when I invested in a resistance soldering machine. I do not know how I ever managed without it! As far as making scrap, I am one of the world's experts. But that is part of the fun, although it sometimes does not feel like fun at the time. Glen posted: 27 Mar 2011 15:19 from: JFS Further update here:- topic 1386- message 8940 posted: 27 Mar 2011 ...
58. WDLR Turnouts
... with a fixed turnout radius tangential at the toe. In which case, I suggest you use a gaunt turnout, with the gaunt offset set to zero. You can then set the length to whatever you want. template> gaunt options> menu item. But you won't be able to get a correctly scaled length unless you use the correct 13.78mm track gauge. Your photo is difficult to read, but I see a strange mix of units -- 600mm gauge and 30 metres radius, with everything else in inches -- blunt nose 1/4 ", flangeway 1.1/4 ", timbers 45" x 7". real> V-crossing options> customize V-crossing> menu items. There is also a note about gauge-widening in the curve. The only section dimensions I have for 20lb/yard FB rail is for mines, with a head width of 31mm, foot width 55.6mm, height 65mm. Here's a quick stab at the turnout. At 30 metres radius and 600mm gauge it is exactly 1:5 CLM ...
... a quick way to identify the hand of a template in track plans when zoomed out. 2. So I have extended the drive slot marker on the switch handing side instead. The marker is purely symbolic, its dimensions do not have any meaning. This will also be a convenient handing marker when switches are used as partial templates in slips and tandems, etc. 3. There is a new guide mark in the turnout-road exit, at a new position called internally THDP. It is always 9ft* from the blunt nose. Its sole purpose is in the make diamond-crossing at intersection function to mark the default diagonal-road exit boundary, so I haven't given it a specific peg position for any other use. I might, if some other use or need comes to mind. If the diagonal-road exit length hasn't been modified, it can be accessed for pegging etc., as the TEXITP peg position. However, it is present in all templates including turnouts, so it will also serve as an indicator of the ...
... topic: 3729 Flat bottom rail crossings posted: 30 Jul 2020 21:42 from: Paul Boyd Hi all I'm about to embark on some flat bottom track for the first time, and am stumped on how the two rails in the crossing join! Does everyone only ever use bullhead??? The photo shows what I'm building (my own photo), as well as an enlargement of the crossing nose. Do the point and splice rails simply taper and join together so that each forms half of the blunt nose? That's how it appears in the enlargement, but the apparent line down the middle may simply be uneven rail wear. Any other hints and tips on working with FB rail will be appreciated. I can see I'm going to have to make some grooved bending and filing jigs for a start. I'm using Peco IL-1 code 60 FB which may be a little light, but the rail foot width allows for the 0.5mm flangeway gap without any filing. Or did the prototype have to reduce the foot width to allow correct ...
Search took 0.135 seconds
Back to Templot Club