TRACK SPACING TRANSITION MODULE

faithfulparsleySoftware and s/w Development

Nov 2, 2013 (3 years and 7 months ago)

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1

TRACK SPACING TRANSITION MODULE


The development within the T
-
Trak modular system of two different track separations (25mm centre to centre and 33mm
centre to centre) results in the need to make transition modules to join modules of differing track separat
ions.

This is one way to make a transition module that requires the minimum of Kato Unitrack and gives, in my opinion, smooth
and realistic curves.



MATERIALS NEEDED:


One standard (308mm long) T
-
Trak module

Two Kato Unitrack
124mm (4 7/8") straight track
s (#20
-
020)


One length of Peco code 80 flexible track, or off
-
cuts of approximately 330mm and

70mm lengths


Approximately 600mm of cork or other type of roadbed for flexible track


Track pins and/or glue (and/or whatever you use to fix down the two type
s of track)



TOOLS USED:


Hobby knife


Hobby saw


Dremel type motor tool with rail cutting discs


Small flat blade screwdriver


Kato N Scale re
-
railer (which has notches for standard 33mm track c
entres) or other


form of track spacing jig for 33mm track centres (eg. Shapemaster)


Tools normally used for fixing down track


OVERALL VIEW OF TRANSITION MODULE:





2

FIRST LAY THE OUTER MAIN:


1.

Remove the rail joiners from both ends of both pieces of Unit
rack.


2.

Turn them upside down and saw through the plastic base until you reach the rail. DO NOT CUT THROUGH
THE RAIL!!!




3.

Separate the two sections of plastic base. The rail should stay fixed to one section.




4.

You should now have two pairs o
f Unitrack halves like this:




5.

Taking the 330mm length of flexible track; cut and slide off sections of sleeper webbing long enough to fit onto
the bare rail on the two sections of Unitrack that have rail attached (approximately 62mm). Slide the

sleeper
webbing onto the bare rail.


6.

Taking these two sections, and using your favourite method, fix one to each end of the module at the `outer main’
location (ie. 50mm track centre from the front edge) with a 1mm overhang of the track base over each end

of the
module.


7.

Place a length of cork, or other type of roadbed, to fill the gap under the track between the Kato Unitrack bases.


8.

Cut the shorter off
-
cut of flexible track to fill the gap between the two sections of track already fixed down
(ideally th
is should be 62mm long) and put in place and connect to the two outer Unitrack pieces with Peco or
similar rail joiners.


9.

Using a straight edge held against the outside of one of the rails on the outer main track, make it as straight as
possible and then f
ix down.

3



SECOND, LAY THE INNER MAIN:


1.

The 330mm length of flexible track should now be missing approximately 124mm of sleeper webbing. Slide the
rails along until the remaining webbing is centred (i.e. equal amounts of bare rail on each end.


2.

Taking on
e of the remaining Unitrack sections without rails, slide it on to the rails at one end of the flexible track
until it mates up with the sleeper webbing. Make sure that the rail extends out past the rail joiner end of the
Unitrack section by at least 5mm.


3.

Using your favourite fixing method and the track separation jig, fix this section of Unitrack at the end of the
module where you want the 33mm track separation to be, making sure that the rail joiner end is lined up with the
outer main track. Let glues et
c dry/set thoroughly before the next step.


4.

Place the remaining piece of Unitrack hard up beside the piece already laid at the 25mm track centre end and line
it up at the rail joiner end. Use this as a guide to cut the sleeper webbing under the inner main
flexible track.


5.

Now slide this remaining piece of Unitrack on to the free end of the flexible track until it mates with the sleeper
webbing.


6.

Again using your favourite method, fix this section of Unitrack hard up against the other piece of Unitrack at th
is,
the 25mm track separation end and with the rail joiner end lined up with the existing outer main track. Let glues
etc dry/set thoroughly.


7.

Place a length of cork, or other type of roadbed, to fill the gap under the track between the Kato Unitrack bases
.


8.

Now using a Dremel, or similar motor
-
tool, and cutting disc, cut the over hanging rails flush with the ends of the
Unitrack.


9.

Fit the Unitrack rail joiners back into the track.


10.

Test fit the module to other modules.


11.


Start thinking about how you will s
cenic the module.