Templot Club forums powered for Martin Wynne by XenForo :
New tab Full site search    Search database    Search by tag    Exact search    FreeFind   All Templot Club OPEN-SOURCE

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 Some of the earlier pages of this topic are now out-of-date.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.

I want to be sure.

Quick reply >
Justme Igor

Justme Igor

Member
Location
Westwoud The Netherlands
Hi all,
My main road is 3150 radii.
I think the other one (leaving main) is 6871.

If i am correct i am going to build this one.
I would be a wast of time to build a jig for 6870 radii if i am wrong.
ask.png


For those that are interested, a box file from a piece of the corner is attached.
With best regards, Igor
 

Attachments

  • ask2.box
    61.1 KB · Views: 74
_______________
message ref: 4975
@Justme Igor

Hi Igor,

Thanks for posting the BOX file. It always makes it much easier to reply to questions. :)

That turnout needs to have a curviform V-crossing, otherwise you are getting multiple reverse curves.

Likewise the other turnout, ideally.

For an explanation, see this video:

https://flashbackconnect.com/Movie.aspx?id=pu2F-wveux5-EWGYuqPd3g2

Using the find intersection function, I discovered that a better fit for the upper turnout would be at 1:4.5 RAM, and at that angle the optimum switch for smooth curves is a 9ft straight switch. This is the result, using a 9ft-4.5 turnout:

igor_y.png


For more about straight switches, see:

https://85a.uk/templot/companion/real_track.php


st_sw.gif


The switch radius shown for straight switches is largely nominal and often irrelevant. Here at over 86 metres it is effectively straight.

The turnout radius in that turnout is 4232.95mm (green in the above diagram).

Beyond the V-crossing, the plain track curves at 3168.76mm radius.

The BOX file for the above is attached below.

Sorry this reply is brief. My computer has decided that today is the day to fall to bits. :( It has obviously decided that after 8 years it is life-expired -- I may be gone for some time while I try to persuade it otherwise.

cheers,

Martin.
 

Attachments

  • igor_y_curve.box
    60.8 KB · Views: 72
_______________
message ref: 4981
You must log in or register to reply here.
Back
Top