Trainset Wheel Model Guide – Plastic vs. Metal

A model train set can have either plastic or metal wheels. Understanding the construction of a train’s wheel set is important when considering what type of wheels is best for you.

The train wheel consists of a flange and a tread. The rim is the inner part of the wheel and is deeper (or longer) than the other. The tread is the flat part that actually rides on the rail. (Real trains have the same flange type and tread make.) Some wheels are mounted on an adjustable axle, which allows some spin of the wheels. In fact, this two-part design of the wheel and axle is called a caster assembly. Some trains have plastic wheel sets and some have metal wheel sets, while still others use a combination of plastic and metal to create the wheel set.

Plastic wheel sets pick up an electrical charge because they are non-conductive, and create a static charge, much like static electricity in a house. This static electricity causes damage to the wheel assemblies. Since plastic wheel assemblies do not conduct electricity, there is a potential for shorting during operation of the model trains.

Plastic wheels may snap due to wear and tear, which will eventually lead to wheel replacement. Plastic wheels are usually quieter than metal wheels, so your train set can run with little outside sound. Usually, plastic wheels can be easily cleaned by wiping them with a facial tissue.

Oiling plastic wheels is difficult because too much oil causes the train to drag and requires more cleaning. A little oil prevents the wheels from rolling smoothly.

Black plastic alloy wheel sets may provide a more realistic look, as real train wheels are usually black.

Alloy wheel sets weigh slightly more than a plastic wheel set, which can provide extra stability for a track-set model train, especially around curves and on inclines. This means that the train can sit more firmly on the track. Alloy wheels can increase the pulling capacity of the train due to the added weight.

The alloy wheel sets provide the most realistic click sound you’ll hear on a real train.

Alloy wheelsets provide a smoother ride, according to some National Model Railroad Association (NMRA) enthusiasts. A model train with alloy wheels generally keeps the track clean and does not require cleaning as often as plastic wheel sets.

The silver finish on alloy wheel sets provides a brightness that can help make your train set look new, even if it’s old.

If you are not sure about your preference between plastic and metal, you should try both. keep a record of noises, cleaning frequency and derailments; All of these items can help you make the best selection of wheelsets for your individual train set. You may find that some train cars work best with plastic wheel sets and others with alloy wheel sets. The main goal is your general enjoyment and ease of care for your train set.