Templot Club Archive 2007-2020
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posted: 12 Feb 2012 20:28 from: sm
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Is there a way of creating a diamond crossover out of two lengths of straight track, for instance if I decided to cross two straight lengths of track at 45degrees to each other or even 90degrees is there a way to make the intersection a crossing Rgds, Stuart |
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posted: 12 Feb 2012 20:51 from: Martin Wynne
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sm wrote: Is there a way of creating a diamond-crossing out of two lengths of straight track, for instance if I decided to cross two straight lengths of track at 45degrees to each other or even 90degrees is there a way to make the intersection a crossing.Hi Stuart, Not 45 degrees or 90 degrees. Templot can't produce crossings shorter than 1: 1.5 RAM ( i.e. not more than 33.7 degrees). Using Templot Development Version (TDV) only: 1. Start with two lengths of plain track crossing over each other. They can be both straight, or both curved, or one curved and one straight length. One should be a background template and the other should be the control template. 2. Click on the background template. 3. On its menu, click peg/align tools > make diamond-crossing at intersection menu item. 4. Follow the instructions and wait a moment while Templot does the calculations. 5. You will then need to split the underlying original background template and shorten each half back to clear the new diamond-crossing. The method won't work for transition curves, it is for straights and fixed-radius curves only. Also it is very easy when testing to have the tracks crossing at too short an angle. Templot can't produce crossings shorter than 1: 1.5 RAM ( i.e. not more than 33.7 degrees). If both templates are straight, or both curved in the same direction at the same radius, the result is a regular diamond-crossing. In all other cases the result is an irregular diamond-crossing. Note that the DP peg position (CTRL-3) for an irregular half-diamond is not coincident with central CTRL-0 position and serves little practical purpose. Or at least, I haven't found a use for it yet.  6. For all short-angle diamonds you will probably want to do some timber shoving to tidy them up. The TDV program needs some further work in this area. More about irregular diamond-crossings in TDV here: topic 1486 regards, Martin. |
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posted: 12 Feb 2012 21:23 from: sm
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Thanks Martin Rgds, Stuart |
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