Templot Club Archive 2007-2020                             

topic: 231Shove timbers and prototype practice
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posted: 11 Nov 2007 02:40

from:

mattots
 
United Kingdom

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Hi

I'm putting the finishing touches to my Templot track plan and am looking for some guidance on prototype practice regarding the way timber/sleeper positioning was adjusted around turnouts and crossovers etc. I've been looking for photos to use as reference but struggling to find many that show the sleeper positions clearly enough.

Matt

posted: 11 Nov 2007 03:42

from:

Martin Wynne
 
West Of The Severn - United Kingdom

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Hi Matt,

There are no hard and fast rules, but this thread contains some notes and follow-ups:

http://groups.yahoo.com/group/templot/message/8313

If you install Microsoft Virtual Earth and use the "Bird's Eye View" option (where available) and then zoom in to the maximum extent available, it's possible to see some of the timbering detail. Generally it's too fuzzy to be very useful, but you might strike lucky and find a location where the light is just right to see the timber positions clearly.

For some modern "timbering" of a crossover, try this:

http://jameswatson5206.fotopic.net/p29379991.html

Instead of long concrete bearers across both tracks (very heavy to handle), they are being bolted together down the centre of the cossover road using inverted U-shaped connectors. Just another example of the variety of timbering practice to be found.
 
You will need more than a mouse to shove that lot! :)

regards,

Martin.

posted: 14 Nov 2007 03:07

from:

mattots
 
United Kingdom

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I had a look on Microsoft Virtual Earth, focussing on preserved railway locations, but couldn't find any places where the timbering/sleepering is clear enough to be of any use.

I'm still scouring through my collection of prototype (steam) railway magazines for useful photos but they are surprisingly hard to find - I suppose given that views looking down from above (or at least from a fairly elevated angle) are not all that common.

The Scalefour Digest (mine just arrived yesterday!) does provide one or two useful and relevant bits of information (especially 23.6.3) such as a diagram of a typical crossover showing the overlapping timbering, as well as a helpful note explaining how the GWR favoured the use of an additional long timber immediately beyond the rail joins at the heel end of a turnout rather than reverting immediately to standard sleepers at this point.

Matt



posted: 14 Nov 2007 03:30

from:

Martin Wynne
 
West Of The Severn - United Kingdom

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mattots wrote:
The Scalefour Digest (mine just arrived yesterday!) does provide one or two useful and relevant bits of information (especially 23.6.3) such as a diagram of a typical crossover showing the overlapping timbering, as well as a helpful note explaining how the GWR favoured the use of an additional long timber immediately beyond the rail joins at the heel end of a turnout rather than reverting immediately to standard sleepers at this point.
Hi Matt,

I can't remember what Scalefour Digest says about GWR timbering, but the required reading for such information is:

http://gwsg.ukmodelshops.co.uk/GWRSG_Publications.html

If you haven't got a copy of that book, stop what you are doing until you have obtained one. :)

regards,

Martin.

posted: 21 Nov 2007 18:02

from:

Andy B
 
 

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I took a short walk after lunch yesterday to look at some of the timbering on site here. It is 'works' track, not main line, but I would think it is typical of goods roads and sidings almost anywhere.

A few observations - timbering is interlaced on the diverging lines of all turnouts and mostly alternate. However, a sleeper which is interlaced between 2 others can be positioned almost anywhere between them, not centrally. Sleeper spacings vary from around 15" between edges (not centres) up to about 4ft. The large 4ft spacings occur where there are 2 sleepers on one road interlaced between 2 others on the adjacent road, something like this:

|  |   _     _    |  |   _   |  |   _
|_|  |  |   |  |  |_|  |  |  |_|  |  |
      |  |   |  |        |  |         |  |

Whilst it may be required on main lines for timbers to be closely spaced at joints, this does not necessarily apply to works or other sidings.

Unfortunately I can't easily get photos as we have to have a permit for cameras on site. But I'm also close to the Midland Railway Centre which has easy access to many switches and crossings. I'll try to remember to take a camera next time we go.

Andy



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