MattzoBricks

Intelligente LEGO Züge

Geometry: R148 system

The R148 concept was invented and designed by Mattzobricks in 2022.

The concept was adopted by Trixbrix in 2023. R148 switches, curves and railyard adapters can already be bought in there shop.

The following illustrations describe the concept.

You can use the R148 siding curve to create parallel tracks from an R148 switch
A simple track switch with R148 can be build without additional adapters. Perfect for high speed trains.
Building railyards with R148 switches is very easy. Just use the S1.3 adapter, which is exactly 4/3 studs long.
Creating R148 railyards with 4 or even more tracks is also possible by using some more S1.3 adapters.
The turnout curve R148-TC is used to build turnout curves in the shape of a perfect 90° R148 curve section

So far, so good. What you have seen above can actually be bought in the Trixbrix shop as of October 2023.

But the R148 concept goes way beyond what you can presently buy. Adding double slip switches, triple switches, crossings and advanced crossovers make the concept even more versatile. We hope that these advanced features will come to market soon as well.

A typical application for the R148 double slip switch. The straights are 49 1/3 studs long, which equals three S16 straights and one S1.3 adapter. The S14.7 straight is 4/3 studs shorter than the standard S16 straight track. The R148 double slip switch is perfectly symmetrical, so it works in both left and right crossover situations. There is no need for a left and right variant of the switch.
Use cascaded R148 double slip switches to build track switches that span over 4 or more tracks.
The R148 double crossover
The R148 monster switch
Any combinations of the R148 crossover switch system are possible.
The X-R148-2 crossing is used to build crossovers over a blank track. The track distance of the parallel tracks is 32 instead of 16 studs (from track middle to track middle)
The X-R148-3 crossing
The R148 system is perfect to build complex switch systems that even large trains can pass through without problems.

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