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TEMPLOT 3D PLUG TRACK - To get up to speed with this experimental project click here.   To watch an introductory video click here.   See the User Guide at Bexhill West.

  • The Plug Track functions are experimental and still being developed. Some of the earlier pages of this topic are now out-of-date.

    For an updated overview of this project see this topic.   For some practical modelling aspects of using Plug Track see Building 3D Track.

    The assumption is that you have your own machines on which to experiment, or helpful friends with machines. Please do not send Templot files to commercial laser cutting or 3D printing firms while this project is still experimental, because the results are unpredictable and possibly wasteful.

    Some pages of this and other topics include contributions from members who are creating and posting their own CAD designs for 3D printing and laser-cutting. Do not confuse them with Templot's own exported CAD files. All files derived from Templot are © Martin Wynne.
  • The Plug Track functions are experimental and still being developed.

    For an updated overview of this project see this topic.   For some practical modelling aspects of using Plug Track see Building 3D Track.

    The assumption is that you have your own machines on which to experiment, or helpful friends with machines. Please do not send Templot files to commercial laser cutting or 3D printing firms while this project is still experimental, because the results are unpredictable and possibly wasteful.

    Some pages of this and other topics include contributions from members who are creating and posting their own CAD designs for 3D printing and laser-cutting. Do not confuse them with Templot's own exported CAD files. All files derived from Templot are © Martin Wynne.

Proximity of Switch Toe to Fine Point

Quick reply >
I would like to save space by shortening a turnout, and placing the toe of the turnout as close to the Vee nose of the previous turnout or diamond.

However the closest I can see is possible is on the X8 timber. This is due to the clash of chairs.

Is my assumption correct or can it be closer.
 
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@Godders

Hi Godders,

This is the closest you can normally get using standard chairs, with the set in the stock rail immediately after the last special crossing chair (D here):

close_switch1.png


However, if your P.W. dept. is prepared to go to the expense of a special order on the crossing shop, anything is possible. But this would be the closest normally practical:

close_switch2.png



This pic at Lincoln appeared on RMweb:

post-19381-0-05873300-1407934177.jpg

Image linked from: http://www.rmweb.co.uk/community/index.php?/topic/18451-peterborough-north/page-248#entry1549853

Notice just in front of the tender wheels, that the switch toe for the outside slip appears to be on the C timber of the crossing, only just clear of the wing rail, as in my diagram above. Notice also how the photographer waited until there was a train in the way before taking a picture of it.

Here's another example:

close_switch_xing1.jpg

linked from: http://i49.photobucket.com/albums/f257/TrogUK/Toe and crossing.jpg

Always useful to have prototype evidence. :)

cheers,

Martin.
 
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Thanks Martin

I had come to this conclusion by playing. However, it raises another couple of points.

1) What is the purpose of MMINP/TMINP if it can't be used as an attachment point for a turnout.
2) Is there another peg position than can be used, I didn't think there was.
3) I have been using Real>chairing>experimental chairing to position the chairs. However it would be nice not to see all the rest of the gubbings that goes with them; i.e. the extended sleepering bits.

P.S. the chairs, even though not fully correct are nice to see, I shall not be using the facility to manufacture chairs but I can see the effort that has gone into it.
 
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2) Is there another peg position than can be used, I didn't think there was.
@Godders

Hi Godders,

Use the mouse actions to shorten (or lengthen) the exit roads to whatever you want. Then use the TEXITP / MEXITP peg positions:
texitp.png


texitp1.png


texitp2.png



And if necessary:
texitp3.png


1) What is the purpose of MMINP/TMINP if it can't be used as an attachment point for a turnout.

TMINP / MMINP are mostly used for plain track. Where you want the exit road to continue on a radius which differs from that available with either regular or curviform V-crossings. And also for partial templates within complex formations such as a tandem turnout.

3) I have been using Real>chairing>experimental chairing to position the chairs. However it would be nice not to see all the rest of the gubbings that goes with them; i.e. the extended sleepering bits

Please bear in mind that the chairing is still 110% experimental. All the various options (if in the end they still exist) will be able to be switched on and off just like everything else in Templot. But at present I am up to my neck in just making it work. A nice user interface will have to wait until it does work, sorry.

cheers,

Martin.
 
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I thought this might be of interest, in view of Martin's comment about the expense of special constructions.

This picture- hotlinked as I don't have permission to upload- is of the former engine stable at Whitby (50G)


There is just one timber between the check/ wing rails and the tip of the next blades. I've no idea if this needed anything special making, but I do know it was VERY tight and the clearances were certainly not the regulation 6ft and 10ft of later years.


Derek
 
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Hi Godders and Martin,
I hope you won't mind me jumping in on this thread. I'd like to do something similar, with a very short distance between the first vee and the set of the next turnout, as shown in the diagrams above. However I can't seem to find how to get the set and start of planing right at the approach end of the second turnout. I tried with the mouse to reduce the approach length below zero but it wouldn't play ball. I seem to be stuck with a minimum of three timbers.
What am I missing?
Andrew
 
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