Templot Club Archive 2007-2020
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posted: 16 Mar 2013 12:52 from: Ian T
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Hi, I've been trying to develop a fairly complex double track station with 5 platforms that involves several double slips and lots of crossovers. Reading several of your threads the 6ft way is only nominal so I felt that I would be safer clearance wise if I improved the track spacing to 50 mm. I then set up the {gauge / Scale selector - custom-a} to basically EM dimensions except adjacent track centres of 50 mm and Min radius of 900 mm. When I start creating track I get EM dimensions. The Gauge / Scale selector shows "50.00 mm Adjacent track centres, T S. (44.67 in use)". 1. Where did I go wrong? and secondly how should I calculate the correct spacer ring diameter to check my spacings? (Or better still where should I have gone to find out the information?) Ian Trotter |
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posted: 16 Mar 2013 14:11 from: Martin Wynne
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Hi Ian, If you have created a custom scale/gauge setting, you must select this for the control template before you start work. It will then follow from one template to the next. Templates previously stored will not be changed. If you delete one of them to the control, you need to apply the custom setting again, otherwise your further work will continue to use the old settings from that stored template. Where did I go wrong?My guess is that since setting your custom scale/gauge for the control template, you have at some stage done tools > adjacent track centres... menu item. And then selected the pre-set option with a slash (/) ? The pre-set option always creates the exact scale equivalent of prototype 11ft-2in centres (44.67mm in 4mm scale), it doesn't honour the default setting for the scale/gauge in use. This needs looking at -- thanks for reporting it. I'm not sure what most users would expect here? If that's not what you did, perhaps you can say the exact sequence of operations which you followed? It's always possible that you have found a bug somewhere. The track centres spacing is used in nearly all the design functions, and one of them may have changed it. secondly how should I calculate the correct spacer ring diameter to check my spacings? (Or better still where should I have gone to find out the information?)Likewise the pre-set option for the ring diameter assumes 11ft-2in centres (adjusted for any under-scale track gauge). This information is included in the ? help notes on the spacing-ring dialog. The easiest way to work with widened spacings is to use # in the data-entry dialog. You don't really need to create a custom gauge/scale just for this: 1. start with the standard EM gauge setting (which gives 44.67mm spacings). 2. go to tools > adjacent track centres... menu item (or geometry > adjacent track centres...). 3. if you want to increase the 6ft way to say 7ft way, that requires an increase of 1ft (4mm). 4. so enter #4 in the dialog. 5. Templot will do the calculation for you, now showing 48.67mm spacing. 6. to set the size of the spacing-ring, if not already first set the pre-set (i.e. 24.63mm in EM). 7. then enter #4 to increase the diameter by the same amount. In Templot2 there is now an option to attach the spacing-ring to the dummy vehicle, which is another way to check adjacent spacings. To use the spacing ring this way, the pre-set diameter needs to be increased by the actual track centres dimension (#48.67), and then again by the #4 increase. It may be easier to zoom in and set the ring diameter manually by mouse action. I will look at adding some additional buttons on the spacing-ring dialog to make these settings automatically, but the dialog is very cramped for space.  regards, Martin. |
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posted: 16 Mar 2013 21:37 from: Ian T
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Martin, Thanks for the prompt response. I think I can see where I went wrong. I'll have to do a run through on a scratch plan to see if I can correct my way of operating, I may have been running before I could walk. What I did was perhaps outside the normal scope Templot. I attempted to reset my track spacing on an existing plan by grouping everything and then fiddling with the gauge settings. I thought I had changed my track spacings but I also suspect I have just added to my confusion as the spacing ring may not have been at the dia I needed. I then probably compounded my mistake by not setting the control template correctly so that my subsequent test pieces were wrong as well. Oh well, we live and learn. So my way ahead is: Try out your suggestions and get more comfortable with doing things the correct way. (This may also involve a few more tutorials). Then start the bigger project from the beginning again and hope that I don't lose my way quite so easily. Thanks again for your help. Ian Trotter |
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