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  • Balance Wheel
    The Balance Wheel forms part of an assembly which functions to regulate the speed at which the(...)
  • Gear Train
    A gear train is a collection of wheels and pinions with varying amounts of teeth and pinion(...)
  • Train Of Wheels
    The train of wheels is a group of gears within a clock or watch movement which provides a(...)

Train Of Wheels

The train of wheels is a group of gears within a clock or watch movement which provides a specific ratio in order to complete it’s function. This is sometimes referred to simply as The Train.

There can be several gear trains depending on the design of the movement.

The most common gear train would the that which is driven directly by the power source to deliver it’s energy to the watch escapement. This is the primary gear train and is actually referred to as the “Gear Train” or “Train of Wheels” by most horologists.

We cover the train in full detail in the Watch Repair Course. In particular, level 1 discusses all the basic watch components and how they interact with each other in order for a movement to function. Level 3 aids you in finding faults within the watch movement including the train of wheels.

Another common gear train within a clock or watch movement is known as the motion work. This will normally be driven directly by the train. Through it’s ratio of gearing the motion works will provide for the display of time.

But whenever the train is mentioned by horologists, they are usually referring to the gear train which serves energy to the escapement and this is certainly true of WatchRepairLessons.com.

Train Of Wheels
Train Of Wheels

The train of wheels of a typical watch or clock are made up of…

  • The Great Wheel (Or mainspring Barrel)
  • The Centre Wheel
  • The Third Wheel
  • The Fourth Wheel
  • The Escape Wheel (Also forms part of the escapement)
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