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1st message | this message only posted: 21 Jul 2013 18:46
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from:
LSWRArt
Antibes, France

 

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I am currently trying to build a crossing with a straight line crossing a curve.  At one end, the common crossing has an angle of  1:2.14.  The other end is nearer 1:3.
I found that 12" sleepers would not work for the 1:2 end and I have had to replace them with 14" wide sleepers, so that the chairs would hang off the edge of the sleeper.
So I wondered how the real railways sleepered crossings at even greater angles?
I am interested if anyone has any photos as it does not seem very obvious how to do it.
N.B.  This is not for a project - just for interest.
Regards, Arthur

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2nd message | this message only posted: 21 Jul 2013 19:07
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from:
Paul Boyd
Loughborough, United Kingdom

 

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Hi Arthur

Have a look at the picture below of a short angle diamond for my in-progress layout.  It was based on the crossing at Highbridge where the S&D crossed the GWR main line.  This is an irregular diamond of around 1 in 1.9



More pictures here.Cheers

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3rd message | this message only posted: 21 Jul 2013 19:29
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from:
Martin Wynne
West Of The Severn, United Kingdom



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Please do not send requests for help direct to me via email or PM.

Post your questions on the forum where everyone can see them and add helpful replies.
That's excellent Paul. :)

Arthur, diamond-crossings shorter than about 1:4 are usually built on waybeams (longitudinal timbers) as in Paul's example. Designs varied between companies and each one was normally created as a special. For details of a GWR 1:1 diamond-crossing, see:

 http://85a.co.uk/forum/view_postx.php?post_id=812

The timbering algorithm in Templot falls over below about 1:4, so you need to shove the timbers to match the drawing by widening them, twisting them round and crabbing them to lie under the rails as waybeams.

regards,

Martin.

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4th message | this message only posted: 22 Jul 2013 12:49
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from:
Brian Nicholls
Poole, United Kingdom



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Hi All,

Does anyone have prototype photographs of such an obtuse crossing, showing the actual waybeams ?

If so please post here.

All the best.

Brian Nicholls.

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5th message | this message only posted: 22 Jul 2013 18:01
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from:
LSWRArt
Antibes, France

 

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Thanks Paul and Martin

Interesting to see how it worked on the real railway and Paul's track looks really good. I struggle to produce much simpler trackwork.

All the best, Arthur
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6th message | this message only posted: 25 Jul 2013 16:15
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from:
Phil O
Plymouth, United Kingdom



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Hi Brian

There are shed loads of photo's about showing Newcastle S & C where most of the station throat is on way beams.

Cheers Phil
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7th message | this message only posted: 25 Jul 2013 16:55
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from:
Brian Nicholls
Poole, United Kingdom



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Hi Phil,

Many thanks for the pointer, will investigate the Newcastle station prototype.  :thumb:

All the best.

Brian Nicholls.

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