Martin Tärnrot

Trackwork: Siding Following Curve

Martin Tärnrot
Duration:   3  mins

Description

Modeler Martin Tärnrot shares ideas for creating a siding after a curve – varying trackwork to get the same functionality but higher reliability (fewer derailments and less fuss with rolling stock). We typically build our layouts inside rooms, so the sidings are often after a curve, or where the corner of the room is.

If you look at track plans in books or from track manufacturers, they have laid out the turnouts poorly. Martin hopes this video will help you do better trackwork that also suits your preferences. Be sure to also check our other MRA videos on Track.

Note that this video includes diagrams of the designs discussed and shown.

PERILS OF THE DOUBLE-S CURVE

Martin shows a typical siding after a curve in a layout – first there is a left-hand curve and directly after that, a right-hand turnout. This creates a double-S curve, which is a challenge, especially for long cars. The car bodies swing out to the maximum in opposite directions just as they pass over the turnout.

SINGLE S CURVE

If possible, it’s better to have a left-hand turnout after a left-hand curve. Then you only have one S curve and it happens in the siding away from the turnout. One way to overcome this S curve problem is to add a straight section between the curve and the first turnout. Make sure it’s longer than your longest car.

PROTOTYPES AND REALISM

The drawback with that solution is it shortens the siding. In most cases, you want to go the other way. You want to optimize the length of the siding, then the curve turnout is the solution. The problem with this is, curve turnouts are not common on the prototypes. If realism is important to you, a curve turnout is not a good option.

You can still have basically the same trackwork but using a standard turnout instead. This solution gives you long sidings, helps avoid the curve turnouts, and stays within the same space restrictions for the trackwork.

For more on trackwork planning, we have a full DVD or streaming class available, Essential Considerations for Trackwork.

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Hello, and welcome to a "Model Railroad Academy" video. In this video, we'll talk about how you can vary the track work. Get the same functionality, but much higher reliability, meaning less derailments and less fuss with your rolling stock. And what we're gonna look at is how to create a siding of the curve. This is very common, because we typically build our model railroads in rooms and well, the sidings then typically is somewhere after a curve, meaning where a corner is. So this is a common situation. And if you look into many of the track plans, you find both in books and from the manufacturers of the tracks, they have actually laid out the turnouts quite poorly. So this is hopefully a guide which helps you to do better track work, which also suits your preferences. So let's get to it. So here's a typical track work to create a siding after curve. And this is a solution you typically find in track plans. And, well, first there is a left hand curve. And directly after that, a right hand turnout. This will create a double S-curve, which is a challenge, especially for long course with bogies. With this design, the core bodies will swing out to the maximum in opposite direction just as they pass over the turnout. If possible, it's better to have a left hand turnout after a left hand curve. This way you only get one S-curve, and that S-curve will happen in deciding away from the turnout. One solution to overcome this S-curve problem is to add a straight section between the curve and the first turnout. Make sure that it's longer than the longest car you have. The drawback with that solution is that it shortens the siding. In most cases, you want to go the other way, meaning you want to optimize the length of the siding. Then a curve turnout is the solution for you. The only problem with this is that curve turnout are not all that common in the prototype. So if realism is very important for you, well, then curve turnout is not your option, but you can still have basically the same track work but using a standard turnout instead. So this solution gives you the long sidings, it helps you to avoid the curve turnout, and at the same time staying in the same space restrictions for the track work. All right, so. It's not just about getting the turnouts in place to get your siding, but it's also to get a good reliability, no derailments, and also to suit your preferences. That's, of course, the first priority. And if you're interested in track work planning, everything from the initial phases of, you know, getting your prototype together and transform that into a kind of track work, and squeezing it into your available space, then there is a class available. If you look into here on "Model Railroad Academy" website, in the shop, there is a class for track work planning. So check that out. It's a helpful guide to take you all the way from beginning to, you know, actually ballasting the tracks. Everything's in there. Thank you very much for watching this video. See you in the next one.
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