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Search results for: transition
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19 pages of results.
... topic: 2475 Transition specification posted: 29 Jun 2014 14:21 from: Tony Huckin Is it possible to specify start and finish radii and shift of a transition and let the length take care of itself rather than starting with a length of plain line and entering the radii. This would help if you are trying to fit a 180 degree curve transitioning to straight at either end in a limited space. Knowing the circular radius and the shift would give the separation of the two straights. posted: 29 Jun 2014 16:02 from: Martin Wynne Tony Huckin wrote: Is it possible to specify start and finish radii and shift of a transition and let the length take care of itself rather than starting with a length of plain line and entering the radii. This would help if you are trying to fit a 180 degree curve transitioning to straight at either end in a limited space. Knowing the circular radius and the shift would give the separation of the two straights. Hi Tony, If you want to specify the transition shift, you must ...
... program later, your work will be wasted and have to be done again. 4. Only a limited number of program settings are currently included in the program preferences. More will be added in due course. Read all through this topic for more information about each new feature as it was introduced. Please scroll to the end of this long topic for information about the most recent changes. Martin. posted: 23 May 2011 17:07 from: Martin Wynne# 2873 30-5 -2011 check for slews before make transition- fixed. background shapes dialog style changed to Normal (was StayOnTop). intersection selector dialog- wording changed. CTRL+ V in Normal mode should cancel mouse action- fixed. (this is a legacy shortcut -- now use INSERT key instead) CTRL+ BACKSLASH is now on reset notch on datum (was snap plain track to nearest sleeper). main-side K-crossing check rail flare -- bug fixed. template> reset menu items removed. CTRL+ Z shortcut now on rebuild group menu ...
23. Getting Started
... This mouse action doesn't affect the alignment, so in this case the position of the peg doesn't matter, and if it's not at either end of the template it will move along with the turnout. regards, Martin. posted: 1 Apr 2012 16:24 from: Adrian (ffoil) Having spent some time over the last couple of weekends playing around with it, I think I'm starting to get the hang of it. But (isn't there always a "but"), I'm having fun and games with a transition curve. I've been trying to follow the instructions at http://www.templot.com/martweb/info_files/make_trans.htm but without total success. I can get it to generate curves, but at least one end is always beyond the limits of the curve that I need to create (if that makes sense). I've tried fiddling around with the radius of the two curves, and the start points, but the curve is still too long. Any suggestions? Adrian posted: 1 Apr 2012 16:39 from: Martin ...
... topic: 1372 Transition curves (again) posted: 18 Feb 2011 22:28 from: Robert Preston Please help. I've tried very hard with transitions, sometimes they work and sometimes they don't. Please have a look at the attached file, bottom left hand corner. I want to join turnout 63 to curved track 64. So I make a branch track (template 68) from the turnout, and insert a temporary template (69) from template 64. Templates 68 and 69 are shown as centre line only, they approach each other closely, but do not quite touch. If the templates are extended, they do not intersect. Thus they appear to meet the requirements for a transition to be made between them. However, if I delete 69 to control and click on 68, "peg/align tools, make transition", I'm told it's not possible to make a transition between these two curves. What am I doing wrong? Oh, as a rider, is it possible to construct B6 slips in 00-SF ...
25. Making a curve
... 20:41 from: Robert Preston Evening All, I wonder if anybody can help with something I have been attempting – making an inside return loop as on the attached plan between templates 45 and 46 no name. This design might be unrealistic, but the need to make such concave loops arises generally. I have great trouble getting them to join, even the "get out of jail free" function (aka slew) doesn't help a lot. Am I trying to do something that's geometrically impossible? Or is having a transition curve the problem? Incidentally, I would find some indication of when and when not to use transitions useful. Robert Preston Attachment: attach_849_1217_inside_curve.box 200 posted: 26 Aug 2010 22:31 from: Martin Wynne Hi Robert, There are several possible solutions, but the simplest is two transition curve templates: 2_261703_520000001.png These have a common radius of about 1315mm at the centre, reducing to about 1120mm radius at the outer ends. I created them using the "make transition" function, described in this tutorial: http:/ ...
... topic: 709 Making concentric connections- slewing a transition curve posted: 23 Jan 2009 19:24 from: richard_t Hello all, I've have two concentric circles, one has a radius of 2671.67mm and the other is 2951mm. I'm trying to join them with either a transition curve or a slew to avoid a platform that will be between them, but with little success. The automatic make transition function fails with an error "The most likely reason is that the required transition zone length would exceed 70000.0 mm, or that the transition curve would be more gentle than the current MAX SPIRAL limit permits.", and the slews I've tried don't look very good, and break my minimum radius. Has anyone any suggestions? TIA Richard. posted: 23 Jan 2009 20:31 from: Martin Wynne Hi Richard, There are some ideas at: http://groups.yahoo.com/group/templot/message/3400 But you should be able to do it with a slew. Have you tried selecting a mode 2 slew, for which you can ...
... topic: 3141 transition curves and other simple questions posted: 29 Nov 2017 13:59 from: madscientist funny I find the difficult things easy and the easy things difficult !! 3004_290853_530000000.png heres a new double track oo test track for my club transition easements to straight etc, all fine Now I want to have a transition curve to join the two curves shown to avoid an abrupt reverse curve templot complains the two curves are the same hand and radius( yes they are the same radius) what am I missing Couple of quick questions on simple stuff (a) I can split track at a peg, thats fine, is there a way to rejoin track thats split (b) if I have a curve that I want to connect to a straight track, but I want to ensure the straight track remains at a given rotate angle, is there a way to do that. I currently find I have to tweak the curve, and re-snap the straight track and check that the K remains at zero for the straight. i.e. ...
... also be really cool if you could lock the end point as well, and the curves and lengths auto updated, but I suspect that would be a lot of programming!), rather than then having to rejoin everything afterwards, and find out it still wasn't quite right. 3) Autorouting. Click on a start peg, an end peg, and the s/w routes the track according to your preset rules on spacing, clearances, minimum radius, etc. 4) Simplified processes. For instance, something like transition curves requires lots of button presses and options. How about a wizard or dragable box that lets you set the start point and end point of a transition curve then does the rest automatically. If it's not quite to your liking you can then edit it manually, but I suspect most would be happy with a default setting. These are just a few ideas, I have many more! ;) ), and I appreciate they probably would be for V3.0/4.0, rather than the next update, but it would ...
... topic: 1888 Dummy Vehicle on transition curves posted: 27 Mar 2012 19:15 from: Brian Nicholls Hi Martin, When checking clearances using the Dummy Vehicle option, I'm sorry to say, that I found the dummy vehicle did not follow the curve through a transition. It followed the initial radius, but when it came to the transition change marker, it got off centre line through the transition area, still following the starting radius. See attached image. It is a shame because this is such a great essential tool aid and very quick to use. I'm not sure if you can do anything about this, but hope this does not cause you too much work, I know that this is a very welcome recent addition to the TDV. All the best, Brian Nicholls. 1853_271411_460000000.png posted: 27 Mar 2012 20:05 from: Martin Wynne Brian Nicholls wrote: When checking clearances using the Dummy Vehicle option, I'm sorry to say, that I found the dummy vehicle did not follow the curve through a transition. Hi Brian, ...
... crossing menu item. (For this method this setting is optional.) Click the tools> make diamond-crossing menu item. If the angles differ, the result will be an irregular diamond crossing. If the angles are the same, the result will be a regular diamond-crossing. 2. Start with a turnout having a curviform V-crossing. Click the tools> make ladder crossover> make curviform ladder menu item. Click it again a few more times. The above 2 methods can cope with having a transition curve in the main road, although you will probably need to follow up with some adjustments to the transition zone to get the desired result. 3. Start with two lengths of curved plain track crossing over each other, or one curved and one straight length. One should be a background template and the other the control template. Click on the background template (in Quick-mode, right-click on it). On its menu, click peg/align tools> make diamond-crossing at intersection menu item ...
... topic: 2680 Loco Release On Transition Curve posted: 3 May 2015 14:16 from: Clivo Hi All I have got into a pickle with the layout plan I am working and so I am looking for some guidance please. I have used used transition curves extensively throughout and am now attempting to add a loco release arrangement The information box shows a tight radius warning on TLO89. As this is track end location it may not matter as vehicles using it should be going slow. However I really need to understand this move for further additions later on. I have used the 'Crossover on Transition Curve' dropdown for advice but must be misunderstanding the instruction.Starting with:- 'First using the MOVE TRANSITION START (SHIFT+ CTRL-F3) mouse action, move the transition start marker on the newly created turnout until it aligns with the transition end marker on the original turnout'. I thought that this would lengthen the heel of the switch but it doesn't seem to have done this. In addition I am a bit mystified about this instruction 'transition start ...
... is there a way to curve (or bend) around a midpoint (or other location)? b) Is there a way to "snap" one piece to another so that they line up correctly with correct sleeper spacing? c) How do you move the ruler? It only seems to display in one place and I need to move it to different locations? Hello David, Welcome to Templot Club. a) I'm not too clear what you are asking. Within plain track it is usually better to have a transition from straight to curve, rather than an instant change. But if that's what you do want you can insert a zero-length transition. geometry> transition curve> easement from straight. Then geometry> transition curve> zero-length instant transition at peg. You can then use all the mouse actions to move the transition zone to the desired position, change the radius at each end of it, etc. Or you could split the straight template into 2 separate templates, and then curve the second one. See ...
... topic: 3137 help with crossovers on transition curves posted: 26 Nov 2017 21:28 from: madscientist Im having a little issue with" make ordinary crossover" on a transition curve. Specifically turnout 23 below, This is made the control and the crossover is generated. What I do find is the crossover turnout so created is not exactly parallel to the exit track, i.e. if I extend the approach track it does not exactly run parallel to the exit of the initial crossover turnout. despite the screen shot the tracks are all connected accurately the next step is to make the short exit track of the crossover bottom left, straight, doing this shows up that the loop straight line is not aligned with the crossover straight( K is 0.57) box file attached thanks as always 3004_261617_520000000.png just to add, after the crossover is created I can go in to" Geometry- Straight" and this creates a straight track and removes the transition, but then I have to rotate the turnout on Peg 5 position to get the K= 180( ...
... topic: 3698 Curved track work and turnouts within curved track posted: 14 Jun 2020 08:24 from: Graham Long HiI am trying to get my head around some concepts related to curved track and turnouts within curved track. 1. I am designing a branchline terminus. I am not sure if I need to worry about transition curves. Are transitions only used where running speeds are much higher? 2. Does all curved track on lines running need cant regardless of it being either fixed radius or transition? 3. I read that turnout's arn't prototypical in the transition curve. Does this mean that all turnouts must be totally outside the area of transtion? posted: 14 Jun 2020 12:22 from: Martin Wynne Hi Graham, Are you asking about prototype or model? On the prototype, full mathematical transition curves are used only on fast main lines. They would always be provided with cant, the transition providing a length in which to ramp up the cant and then ramp back down to level track. For branch lines, it would ...
... topic: 3428 Transition curves on parallel tracks. posted: 13 May 2019 12:57 from: Godfrey Earnshaw I believe I understand the reason for transition curves, to ease a train into a curve, usually for passenger comfort:Q1) Should a transition curve occur on the exit of a curve also, in which case my second question is unnecessary. If the answer to Q1 is no; Q2) if there are two parallel tracks, one in each direction, does the opposite direction have it's transition at the other end and how do you make the tracks the correct distance apart? posted: 13 May 2019 14:40 from: Martin Wynne Godfrey Earnshaw wrote: I believe I understand the reason for transition curves, to ease a train into a curve, usually for passenger comfort: Q1) Should a transition curve occur on the exit of a curve also Hi Godfrey, The main reason for using a transition curve on the prototype is to provide a length of cant gradient along which the rails can rise and fall. Curved track ...
... topic: 3477 New: make simple link function posted: 9 Aug 2019 21:14 from: Martin Wynne For years I've intended to provide a quicker way to link between two existing templates. For some situations a full transition curve isn't needed, and a plain tangential boundary between two curves or a curve and straight is acceptable. For example within yards and depots. I've finally got round to doing something about it -- prompted by Richard's recent request for such an option in a loco shed. It will be in the next program update. I've made a quick scruffy video: http://flashbackconnect.com/Default.aspx?id=-yIZ2yOMvSRJDrQNe4S7zw2 But when you do want a smooth transitioned link for running lines, see the usual method here: http://templot.com/companion/link_existing.php cheers, Martin. posted: 9 Aug 2019 21:26 from: Rob Manchester Hi Martin, That looks likely to be a very useful addition to Templot. Look forward to it soon. While not the way you would prefer people to use Templot ...
... topic: 895 Why will this not transition? posted: 11 Jul 2009 06:24 from: BruceNordstrand I am slowly working my way through my plan but this kind of thing is driving me nuts. In the attached file I am attempting to create a transition from the straight track to the curved one. Both sections of track are aligned on the background scan how I want them. Clicking on the straight section and selectiing transition causes Templot to tell me it can't do it- WHY? These are the kinds of things that are driving me nuts daily. I can see no difference in this than the videos I have watched in an attempt to grasp Templot yet it doesn't work. Any and all help appreciated... Cheers Bruce Attachment: attach_585_895_Picture_1.png 98 posted: 11 Jul 2009 08:20 from: Martin Wynne BruceNordstrand wrote: I am slowly working my way through my plan but this kind of thing is driving me nuts. In the attached file I am attempting to create a transition from the straight track to the curved one. ...
... topic: 2678 Error when attempting to make transitions posted: 2 May 2015 22:04 from: dave turner Whilst trying to create a transition curve between two apparently non-intersecting templates I got an error message suggesting I try another B6 turnout amongst other possibilities. Neither of the templates included a turnout, though one was a transition curve itself.. What have I misunderstood? A recent topic in Prototype Pictures showed some pictures and fuzzy track plans of the south end of Shrewsbury Station prior to the first stage of serious renovation. I've always had a fondness for my home town station and surrounding marshalling yards etc. as my Grandfather, based in Shrewsbury, was a well respected guard on goods trains and often took me to visit his colleagues there in the late 50's/ early 60's and have dim recollections of trains coming to the now defunct platforms 1&2. So just for the exercise, in idle moments I've been trying to use Templot to reproduce the early trackplan in N (UK) scale. posted: 2 May 2015 23: ...
... topic: 1204 Crashed and lost all data! posted: 16 Aug 2010 21:22 from: Judi R Well, the blurb says this wasn't possible but I've crashed Templot v0.91c and, despite having built up and saved a named box file, the only thing in it when I re-opened it was the single B7 default turnout. All my work has gone. I was trying to reconstruct a transition that I had previously deleted by mistake (unfortunately the "undo" doesn't undelete) and Templot put up an error message saying I had confused it because my attempted transition was "too exotic"! Just thought you'd like to know... Judi posted: 16 Aug 2010 21:37 from: Martin Wynne Judi R wrote: I was trying to reconstruct a transition that I had previously deleted by mistake (unfortunately the "undo" doesn't undelete) Hi Judi, undo delete is on the edit menu on the storage box. Your files are in the C:/TEMPLOT/BOX-FILES/ folder unless you have changed ...
... loads of duplicate backgrounds, but I now just go around deleting them after !), then the next issue is more to do with how to construct a prototype formation in Templot, i.e. the lack of track knowledge SO to summarise 1. Basic beginners, quick and short intros to major functions, not sure, minutes of video needed 2. Intermediate, i.e. beyond the turnout template, parallel tracks, crossovers, basic peg and notch, advance and exit track etc 3. Advanced, more peg and notch, transitions, slips crossovers 4. specialised, tandems, split deflection, etc dave Last edited on 29 Jan 2018 17:18 by madscientist posted: 29 Jan 2018 17:28 from: madscientist I'm not going anywhere near that, at least not in the short term. Such geometrical work is out of place in Templot, and not straightforward. Beginners don't want to be working straight off with swing angles and the rest if they have got any sense. That sort of thing is all so much easier in say AnyRail or ...
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