Templot Club Archive 2007-2020
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posted: 21 Jan 2012 13:30 from: LSWRArt
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Hi everyone, Would anyone have the time to have a quick look at the enclosed plan and see if there are any obvious mistakes and if the sleeper positions look OK, particularly on the half scissors at the station throat. I am about to order some track parts to have a go at making my first point, so would prefer to get any drawing mistakes out of the way before I do that. Many thanks Arthur |
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| Attachment: attach_1323_1797_Kingsbere_v6_20Jan12.box 319 | |||
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posted: 24 Jan 2012 23:45 from: Tony W
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LSWRArt wrote: Hi everyone,Hi Arthur. Try this, I think it looks better. Timbers should be interleaved rather than shortened and butted up unless it is unavoidable. Tony. |
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| Attachment: attach_1334_1797_Kingsbere_v6a_24Jan12.box 275 | |||
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posted: 25 Jan 2012 12:11 from: LSWRArt
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Tony Many thanks for your help with this. I have now ordered some track parts, so will start construction my first point once these arrive. Thanks also to everyone else in the group for all their help and advise to a Templot beginner. Arthur |
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posted: 25 Jan 2012 13:29 from: LSWRArt
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How to add a catch point to this layout? I have just realised that I must put in a catch point between the loop and the main line. In real life it would have been possible to interlock the point to the works siding so that this could not be reversed when the signals to enter or leave the station were pulled off, but you still need to protect the straight on road from the loop by a catch point, roughly opposite the beginning of the X crossing. Is there a tutorial showing how to add a single bladed catch point within a turnout? (In effect I need to make the point to the works siding 3-way, but with only a single blade turning to the right). Thanks Arthur |
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posted: 25 Jan 2012 16:20 from: Phil O
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Hi Arthur To make a catch point reduce a turnout to the length of the switch tongue and the using DO, OMIT RAILS, get rid of the bits not required. See attached box file Cheers Phil |
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| Attachment: attach_1335_1797_Catch_point.box 284 | |||
| Last edited on 25 Jan 2012 16:21 by Phil O |
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posted: 25 Jan 2012 20:13 from: LSWRArt
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Phil Many thanks. I thought omitting rails would be under 'Real', but I have now found it and, as you say, it is then easy to make the slip. All the best Arthur |
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posted: 25 Jan 2012 20:37 from: Martin Wynne
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LSWRArt wrote:I thought omitting rails would be under 'Real'Hi Arthur, The intention of the real menu is that the settings can all be obtained by reference to the prototype data. The prototype doesn't start with a full turnout and then remove some of the rails, so I put that in the do menu, which tends to be a dumping ground for items which don't seem to fit anywhere else. It's all rather moot, and I'm sure a better menu scheme could be devised. The present scheme is still based on the changes which I made in version 078 of 2002: http://www.templot.com/martweb/pug_info_1.htm But we can't change it now without causing a major upset -- apart from the confusion caused to users it would invalidate all the existing videos, which would all have to be remade from scratch. regards, Martin. |
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posted: 25 Jan 2012 22:57 from: Tony W
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LSWRArt wrote: How to add a catch point to this layout?Hi Arthur. More importantly you also need a Trap point (not a Catch point) in the works siding to prevent wagons rolling out across the main line. Something I normally look for but overlooked as I was more concerned with the timbering. The Omit rails option used to be under Real several versions back, but as Martin has already noted, it is now under the Do menu, it still catches me out occasionally. Tony. |
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| Last edited on 25 Jan 2012 23:03 by Tony W |
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posted: 26 Jan 2012 07:52 from: LSWRArt
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Hi Martin Not a problem. I only thought it might be in Real because that is where you amend check rail dimensions, but I should have checked round some of the other headings. If DO is where all the bits and pieces of the program are filed, I will know to look there next time I cannot find something. Considering I have only been using the program for a little over a month, I am really pleased with what i have been able to achieve. Best wishes Arthur |
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posted: 27 Jan 2012 09:35 from: LSWRArt
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Hi Tony What is the difference between a catch point and a trap point in appearance? According to Wikipedia a trap point can be single or double blade and the inner blade can either be contained within the running rail, or cross over as a full point into a sand drag or buffer stop. So the first two of these seem to overlap a catch point in appearance (although again, according to Wikipedia, a catch point is only used to catch stock running away on a gradient and all points protecting a main line from a siding should correctly be called trap points). Would a single blade trap be sufficient to protect this works siding, or what would you suggest is correct prototype practice (circa 1912) Thanks Arthur Arthur |
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posted: 27 Jan 2012 10:01 from: Martin Wynne
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LSWRArt wrote:What is the difference between a catch point and a trap point in appearance?Hi Arthur, For the p.w. engineer a "catch point" or a "set of catch points" is the name for the physical object -- a switch designed to derail vehicles. Single or double points. "Trap points" is a signalling term describing one of the purposes they serve -- to protect running lines from rolling stock in adjacent loops and sidings. Trap points can be a simple set of catch points, or a complete turnout leading to a short spur or sand drag. In some designs, the turnout rail is ramped up to carry the wheels over the opposite rail instead of a conventional V-crossing -- see the Castle Cary pic in this topic: topic 179 regards, Martin. |
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posted: 27 Jan 2012 21:23 from: Tony W
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Hi Arthur. As the reply from Martin and the link explains, it is largely a matter of definition and who is defining it. It is often a source of confusion. As explained, in appearance they can be the same if only a single switch blade is used as trap point ranging up to a complete turnout leading into a sand drag or a short "blind siding". What was used in any given situation varied according to company practice and over time. Single bladed traps seem to have been favoured in cramped situations and were sometimes incorporated into the last turnout before leaving a goods yard if space was tight. There was so much variation that it would be difficult to say you were wrong which ever variant you choose. Tony. |
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