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                 Slip road on irregular diamond - which way round?
     
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1st message | this message only posted: 23 Jun 2020 10:50
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Julian Roberts
 

 

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Hello
Making a track plan on a map, I have an irregular diamond slip where at one end the crossing is 1:7 and at the other it is 1:9.  I am muddled up about which way round the slip road goes.

I think I've followed the instructions, I have copied each half diamond and made them into turnouts without sleepering, and done the other tasks to make them into slip roads.  Logically that would imply to me that the switch for the 1:9 crossing goes actually adjacent to the 1:7 crossing - is that correct?  And vice versa, the switch for the 1:7 crossing goes adjacent to the 1:9 crossing.

Or is it the other way round?  

I have printed out the template and it looks perfectly OK to me, but it may not be correct, I've ended up putting the shorter switch by the 1:7 crossing.



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2nd message | this message only posted: 23 Jun 2020 11:30
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from:
Martin Wynne
West Of The Severn, United Kingdom



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Hi Julian,

The slip switches provided in Templot are intended to be used adjacent to V-crossings of similar angle.

In each case the switch front length has been adjusted to ensure adequate clearance for the moving switch blades between the wing rail fronts, when pegged onto the TCP and MCP positions.

They are merely suggestions of course. You can use any switch you like in a slip, if it fits better. If you are creating a slip to a specific prototype you would obviously want to use switches corresponding to those of the prototype railway company.

For an irregular slip, you will probably need to use make simple link or make transition link on the slip roads to get a good fit between the switches.

cheers,

Martin.

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3rd message | this message only posted: 23 Jun 2020 12:35
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from:
Julian Roberts
 

 

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Hi Martin
Thanks a lot for clarifying that.  So my first go turns out to be right? -  I attach the file just in case you had time to check.

I'm assuming for 1950s BR I can have ordinary switches, and this seems to fit very well, and the link between the switches seems to be fine.

Templot is amazing!

Cheers
Julian

PS Please excuse the file title - I've got several different versions given titles of various levels of hyperbole!

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Attachment: IRREGULAR SLIP ABSOLUTELY PERFECT box in right order.box (Downloaded 20 times)
 
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4th message | this message only posted: 23 Jun 2020 14:18
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from:
Martin Wynne
West Of The Severn, United Kingdom



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Hi Julian,

Thanks for posting the file.

That's looking good, nice to see an irregular slip. :)

At the 1:9 end you have used a 15ft switch, which is fine. But it needs moving forward (CTRL+F5 or 5) about 3mm so that the switch tips are supported on the timber, and can open behind the check rail. That will mean adjusting the slip road a fraction.

How did you get on with make diamond-crossing at intersection? That had a recent major re-write in 226c.

cheers,

Martin.

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5th message | this message only posted: 23 Jun 2020 16:26
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from:
Julian Roberts
 

 

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Hi Martin
Thank you very much for taking the time to look at this.  I don't remember deciding to use a 15ft switch rather than a slip switch - but if you say it's fine, I'm not altering it!

I've slid the switch along using 5, and am not quite sure where the tips are.  Hopefully I attach a screenshot.  The tie bar is indicated, and there is a white line where I think the tips are - is that right, the white line indicates the tips?

I think I did use the make diamond crossing at intersection - I remember it being a lot easier than following the tutorial making a ladder crossover.  It was a few days ago.

I have a question on making this formation but will do it as a separate topic.

Cheers
Julian

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Attached Image (viewed 60 times):

Slip switch detail please delete.PNG
 
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6th message | this message only posted: 23 Jun 2020 16:47
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from:
Martin Wynne
West Of The Severn, United Kingdom



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Julian Roberts wrote: The tie bar is indicated, and there is a white line where I think the tips are - is that right, the white line indicates the tips?Hi Julian,

Yes, the marks indicate the tips of the blades and also the end of the planing (filing). On the diverging side the tip mark also indicates the position of the set in the stock rail.

That's not actually the stretcher bar, it's just a guide slot mark for building the baseboard. The actual position of the stretcher bar(s) varies with different prototypes.

cheers,

Martin.

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7th message | this message only posted: 26 Jun 2020 15:39
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from:
Julian Roberts
 

 

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Hi Martin

I had to make the slip again, for various reasons. I looked for a long time for make diamond crossing at intersection - I expected it to be in tools - till I found it on the popup menu. It was easy to use, thanks.
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