Explaining the Popularity of HO Scale Trains

When it comes to model railroading, enthusiasts have a wide range of choices, especially when it comes to scale. There are at least five main groups of scales, with a number of non-standard options as well. With all these options, how did HO-scale come to dominate the modeling landscape? In order to discover this, we'll look at the different scales available as well as some of the history of model railroading.

When it comes to model trains, nothing matches the size of G-scale trains. These are the largest, and often the most expensive trains available. They can range in size from 1:32 scale upwards to 1:4 scales. Most G-scale trains are used in outdoor settings and are often called garden-scale railroads. Some of these trains are so big that people can actually ride them. Many amusement parks across the globe utilize these trains as rides for guests.

The second largest trains are the O-scale trains. In the U.S., they are a standard 1:48 ratio. In several other countries, you can find ratios ranging from 1:64 up to 1:42. Until the 1960s, these were the most popular of all train types.

Half the sizes of O-scale trains are HO. These types measure a standard 1:87 scale and are the most popular types of model trains, with over 50 manufacturers producing trains world-wide. Around the mid-1960s, these types of trains took over as the king of model railroading.

After O-scale, we find N at 1:160 scale. This means that these trains are just barely more than half the size of HO. At this size, most enthusiasts are probably more interested in the total layout and not solely focused on the train. At an even smaller size, we have Z-scale trains. These miniscule items measure a mere 1:220 scale against their real-life counterparts. Such small trains enable model railroaders the ability to have impressively detailed layouts in confined spaces.