Toy train

Key takeaways

Toy train belongs to physics; place it in that map before memorising details.
Learn the definition first, then one example that makes the definition concrete.
Connect Toy train to a quantity you can measure, compute or draw — that is where exam questions come from.
Reproduce the core statement of Toy train from memory before moving on to harder problems.

Reference excerpt

A toy train is a toy that represents a train. It is distinguished from a model train by an emphasis on low cost and durability, rather than scale modeling. A toy train can be as simple as a toy that can run on a track, or it might be operated by electricity, clockwork or live steam. It is typically constructed from wood, plastic or metal. Many of today's model trains could be considered toy trains, provided they are not strictly to scale or are less detailed in favor of a sturdiness appropriate for children or inexpensive production.

Definitions "Toy train" usually refers to a reduced-scale model of a train for children to play with. Some similar but larger vehicles are made for children to ride in, typically in parks and playgrounds; often they run on tires and not tracks. If they are meant to resemble trains then these too are called toy trains. Small trains are sometimes also called toy trains. In India, many trains that run on meter-gauge tracks and that are meant for adults are called toy trains. The trains that run on the Darjeeling Himalayan Railway are an example. For highly accurate train models made for serious hobbyists and collectors, the term "model train" is preferred.

Standards The first widely adopted standards for toy trains running on track were introduced in Leipzig, Germany in 1891 by Märklin.

See also List of rail transport modelling scales.

USA classification Z Gauge [1:220] N Gauge [1:160] HO Gauge [1:87] S Gauge [1:64] O Gauge [1:43 to 1:48, varies] G Gauge [1:20] Märklin measured the gauge as the distance between the centers of the two outer rails, rather than the distance between the outer rails themselves. Lionel's standard gauge is allegedly the result of Lionel's misreading these standards, as are the variances in O gauge between the United States and Europe. Most of these standards never really caught on, due to their large size, which made them impractical to use indoors, as well as the high price of manufacturing. Wide gauge trains, which are close in size to 2 gauge, are produced in limited quantities today, as are 1 gauge and O gauge trains. Of these, O gauge is the most popular.

The modern standards for toy trains also include S gauge, HO scale, N scale, and Z scale, in descending order of size. HO and N scale are the most popular model railway standards of today; inexpensive sets sold in toy stores and catalogs are less realistic than those sold to hobbyists. O gauge arguably remains the most popular toy train standard. Another size that is attracting interest among hobbyists is building and operating trains from Lego, or L gauge, which is roughly 1/38 scale. A "de facto" standard is used by some companies making wooden toy trains that run on wooden tracks. This is usually referred to as "Brio" or "Thomas" compatible in reference to two major companies. The term "Vario System" introduced by the company Eichhorn, refers to a variant of the connecting system used by some modern wooden track producers. The tracks don't use rails as such but rather grooves set apart a certain distance. The same "gauge" is used by the "Lionel Great American Adventure series" produced by Learning Curve, the Plarail system from Tomy and Trackmaster. Although the rolling stock of each system may be used to some extent on the tracks of other systems the compatibility beyond simple straight track and large radius curves may be rather limited. Playmobil is an example of a company that offers a complete play world system based on its small plastic dolls and has later extended its play world to railways. It has developed two train systems to date. One is aimed at larger children using electric trains and remote control. This track system is designed such that it can also be used outside much like a garden train. The other system is designed for preschool children or even toddlers. An example of a system aimed at the very young is offered among others by the company "Wader Toys". This includes tracks for road and rail as well as waterways. The elements are very simple in design, sturdy and washable as they are thought for play including such environments as sandboxes, mud and water. To scale detail is a very minor issue with such systems that focus rather on sturdiness, avoiding sharp edges and avoiding parts that could be a choking hazard. Although the words "scale" and "gauge" are often used interchangeably, many toy train manufacturers historically had little concern with depicting accurate scale. American Flyer tended to boast its closer accuracy compared to other manufacturers. The terms "O scale" and "S scale" tend to imply serious scale modeling, while the terms "O gauge" and "S gauge" tend to imply toy trains manufactured by Lionel and American Flyer, respectively. While S gauge is fairly consistent at 1:64 scale, O gauge trains represent a variety of sizes. O gauge track happens to be 1/45 the size of real-world standard gauge track, so manufacturers in Continental Europe have traditionally used 1:45 for O gauge trains. British manufacturers rounded this up to 1:43, which is seven millimeters to the foot. U.S. manufacturers rounded it down to 1:48, which is a quarter-inch to the foot. However, most engaged in a practice of selective compression in order to make the trains fit in a smaller space, causing the actual scale to vary, and numerous manufacturers produced 1:64 scale trains—the proper size for S gauge—in O gauge, especially for cost-conscious lines. Some of the earliest O gauge trains made of tinplate weren't scale at all, made to unrealistic, whimsical proportions similar in length to modern HO scale, but anywhere from one and a half to two times as wide and tall. Some adult fans of toy trains operate their trains, while others only collect. Some toy train layouts are accessorized with scale models in an attempt to be as realistic as possible, while others are accessorized with toy buildings, cars, and figures. Some hobbyists will only buy accessories that were manufactured by the same company who made their trains. This practice is most common among fans of Marx and Lionel.

History

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Illustrations

Worked examples

Example 1 — a first encounter with Toy train

Start with the simplest possible case. Write down what Toy train claims or describes in one sentence, then invent the smallest concrete situation in which that sentence is true. In physics, the smallest case is usually a single object, a single equation or a single measurement. Check that every symbol or term in your sentence has a meaning in that case.

Example 2 — changing one variable

Take the situation from Example 1 and change exactly one quantity: double it, halve it, or set it to zero. Predict what should happen to Toy train before you calculate. Comparing your prediction with the result is the fastest way to find out whether you understand the idea or only the words.

Example 3 — an exam-style question

Typical questions about Toy train ask you to (a) state it precisely, (b) apply it to given data, and (c) explain a limitation. Practise writing all three answers in under five minutes; the third part is what separates a full-mark answer from an average one.

Applications of Toy train

In research: Toy train appears in physics research whenever the underlying quantities have to be modelled precisely. Papers usually cite it as a starting assumption and then explore where it breaks down.
In technology and industry: Engineering practice reuses Toy train in design rules, simulations and safety margins. Knowing the idea lets you read a specification sheet and understand why the numbers look the way they do.
In the classroom: Toy train is common in secondary-school and first-year university syllabi. It links to neighbouring topics Electronic toys, Mechanical toys, Rail transport modelling, so understanding it makes those chapters shorter.
In everyday life: Look for Toy train outside the textbook — in sport, cooking, traffic, electronics or the sky above you. An example you found yourself is remembered far longer than one you were given.

How to study Toy train in 20 minutes

Read the reference excerpt below once, without taking notes.
Close the page and write down what Toy train means in your own words.
Compare your version with the excerpt and mark what you missed.
Work through the three examples above with pen and paper.
Explain Toy train out loud to somebody else — or to Teacher Smith in the lgStudy chat.

Frequently asked questions

What is Toy train in simple terms?

A toy train is a toy that represents a train. It is distinguished from a model train by an emphasis on low cost and durability, rather than scale modeling.

Why does Toy train matter?

Because it connects several physics ideas at once: it gives you a definition you can apply, a quantity you can calculate, and a way to check whether a result is plausible.

How should I study Toy train?

Read the excerpt, restate it from memory, then work through the examples and applications listed on this page. The five-step study plan above takes about twenty minutes.

What does this page cover?

It gives you a compact reference excerpt plus original lgStudy explanations, examples, applications and study material on Toy train.