How do trains turn without differential

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    How do trains turn without          differential?


This is a question that would baffle many. It surely baffled us and we thought the flanges on the wheels keep the trains on the track, but that’s not the case at all. Then what could it be? Let’s try to address that exactly.
If you notice the shape of the wheel of a train, you will notice that they are conical in shape. The side with greater diameter is on the inside. The shorter diameter lies towards outside.When the train approaches a curve and has to turn then the wheels slide away in the correct direction. This keeps the train on the track and allows for proper negotiation of the curve.
    In studying this theory we are considering that the train is moving in the left direction.Now if the train is making a left turn. Then the wheels due to centrifugal force will move towards the right. Obviously, this will result in an increase in diameter of the right wheel and decrease in diameter of the left wheel.
   This will allow the right wheel to travel more distance due to the larger diameter when compared to the left wheel. Hence solving the problem. The simple design provides a genius solution every time.
    The beauty of the whole system is that the wheel shift happens automatically. No external system is required for the same.

A locomotive wheel consists of two parts:
  • Wheel.
  • Tire.
The Tire is the outer surface which remains in contact with the track. A Tire is fitted on the wheel to reduce maintenance costs. Replacing a worn out wheel is very expensive. Hence a replaceable steel layer called tire is used. The tire is forged on the wheel and wears over the use.
The most common cause of wheel or tire damage in trains is heavy breaking. The entire brakeforce is directed towards wheels. This puts a heavy burden on them and damages them. If the damage is severe then wheel has to be replaced. Train tires are about 3 inches in thickness making them durable. The replacement also calls for replenishing the worn inches. Hence making maintenance reasonable

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