Templot Club Archive 2007-2020
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posted: 18 Feb 2011 22:28 from: Robert Preston
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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? Or is B7 the practical limit? Robert Preston |
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| Attachment: attach_979_1372_layout1_feb_18_slips2.box 162 | |||
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posted: 18 Feb 2011 22:51 from: Martin Wynne
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Robert Preston wrote: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.Hi Robert, Template 69 is itself a transition template with its peg at the upper end. This is the wrong end. You must move its peg to the lower end so that Templot knows which of the two radii in the transition template to use in the calculations. The peg is used as a marker for this purpose. Even after that it may fail if the radii are too similar or their centres too close together. Before moving the peg on template 69, ease the second radius out a fraction (F6). You can then close up the gap again by moving the transition zone down a little (SHIFT+CTRL+F3). Then swap the peg to the lower end and make the transition to template 68. Don't have the gap too wide, or the new transition zone will be too long and overlap the transition zone on template 69. After making the transition, you will want to move the peg on 69 back to the upper end so that you can shorten it (F4) to make a template boundary between the transition zones. regards, Martin. |
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posted: 18 Feb 2011 23:07 from: Robert Preston
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Thanks Martin. That does the trick. I had tried moving the peg from one end to the other, but I hadn't thought of easing a radius on one template. Robert |
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posted: 19 Feb 2011 07:02 from: Martin Wynne
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Robert Preston wrote:Oh, as a rider, is it possible to construct B6 slips in 00-SF? Or is B7 the practical limit?Hi Robert, It's possible, but tricky. Generally the best advice is to build short slips with movable K-crossings (switch diamonds) in 00 and EM. Lots more about this in these topics: topic 324 topic 98 regards, Martin. |
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posted: 20 Feb 2011 11:58 from: Robert Preston
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Thanks once more Martin. I'd forgotten about the switched diamond option. There's so much to remember in this business! Robert |
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