Templot Club Archive 2007-2020
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posted: 22 Apr 2012 19:46 from: Len Cattley
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I don't know if this is right place to post this question but here goes. I wish to make a small test track in S7 18" wide by 8' long, what points can I use so that 4-6-0's can negotiate them? Thanks. Len Cattley |
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posted: 23 Apr 2012 23:46 from: Tony W
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Hi Len. It is generally stated that B-6 turnouts are the smallest that are unrestricted although I am not too sure I fancy running a 9F though one. If however they are part of a crossover to be used by corridor stock then something rather longer should be used. I believe D-9s are the minimum for coupled BR mk1 coaches. This sort of data is not easy to come by. Tony. |
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posted: 24 Apr 2012 09:59 from: Nigel Brown click the date to link to this post click member name to view archived images |
For coupled coaches and the like it depends to some extent on what couplings you are using and where they are mounted; esssentially, how much sideways shift you can get between the couplings. I use body-mounted B&B couplings, and find a B7 is just about OK. Cheers Nigel |
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posted: 24 Apr 2012 16:07 from: Tony W
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Hi Nigel. Yes of course we modellers can get away with sharper curves than the prototype which is what my previous comments refered to. My layout (P4) has a B-6 crossover and my rake of mk1 coaches (with Alex Jackson couplings) negotiate it OK, but the displacement of the corridor connections has to be seen to be believed. I hasten to add that this road was not intended to be used by passenger stock but in the interests of scientific experiment!!!! Tony. |
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posted: 25 Apr 2012 16:48 from: allanferguson
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Nigel Brown wrote: For coupled coaches and the like it depends to some extent on what couplings you are using and where they are mounted; esssentially, how much sideways shift you can get between the couplings. I use body-mounted B&B couplings, and find a B7 is just about OK. 176_251139_320000000.jpg  I'm not sure whether this scan will be readable -- it is a poor quality original. It relates the possibility of buffer locking to the radius of the reverse curves and in particular the length of the intervening straight. I don't know where it came from, and I certainly don't understand the maths. I haven't made any use of it as my interests focus on much older and much shorter rolling stock. Obviously it only relates to pushing stock. Allan F |
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posted: 25 Apr 2012 16:52 from: allanferguson
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I see the software has reduced the image to an unreadable size -- it wasn't so small when I uploaded it (The original was A4 size). Is there anything I can do about this? Allan F |
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posted: 25 Apr 2012 16:59 from: Phil O
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Hi Allan allanferguson wrote: I see the software has reduced the image to an unreadable size -- it wasn't so small when I uploaded it (The original was A4 size). Is there anything I can do about this?Try adding as an attachment rather than inserting it in to the text. Cheers Phil |
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posted: 25 Apr 2012 17:12 from: Martin Wynne
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Hi Allan, It's available as a downloadable PDF file on the Scalefour Society website, and your original scan is available in the Image Gallery here if you display it in the Gallery and then click the original size link:  176_251139_320000000.jpg  regards, Martin. |
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posted: 25 Apr 2012 17:22 from: Martin Wynne
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Phil O wrote:Try adding as an attachment rather than inserting it in to the text.Dear all, Please don't add image files as an attachment, it puts too much load on the database. Use the Image Gallery instead. If you display the image in the Gallery, you will find a link below it to display your full-size original. Right click on the full-size image to get the image URL, and then insert it in your message using the image.gif  button. The attachment function is intended for sharing .box files, etc. regards, Martin. |
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posted: 25 Apr 2012 18:35 from: Martin Wynne
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I wrote: It's available as a downloadable PDF file on the Scalefour Society websiteHere's the link: http://www.scalefour.org/resources/GWRtracknotes/R1774A.pdf regards, Martin. |
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posted: 25 Apr 2012 19:33 from: allanferguson
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Thanks, Martin, I hadn't realised it was on the Scalefour site -- and that's a clearer copy than the one I scanned and posted. Allan F |
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posted: 25 Apr 2012 19:43 from: Martin Wynne
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Hi Allan, The full set of drawings is at: http://www.scalefour.org/resources/gwrtracknotes1.html http://www.scalefour.org/resources/gwrtracknotes2.html regards, Martin. |
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posted: 25 Apr 2012 20:01 from: Paul Boyd
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The full set of drawings is at: http://www.scalefour.org/resources/gwrtracknotes1.html http://www.scalefour.org/resources/gwrtracknotes2.htmlWow - I'd somehow missed that resource. That's me tied to the computer for a bit longer  |
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