North Carolina Locksmith Practice Exam

Question: 1 / 435

What does "direct drive" refer to in combination locks?

The method of turning the key to unlock

The mounting of the drive cam on the dial's spindle shaft

"Direct drive" in combination locks specifically refers to the mounting of the drive cam on the dial's spindle shaft. This design allows for a more efficient and direct transmission of movement from the dial to the locking mechanism. When the dial is rotated, as it is turned, the drive cam, fixed to the spindle shaft, engages with the components of the lock that operate the bolt or lever, resulting in the lock being disengaged more smoothly and reliably.

This direct relationship between the dial and the locking mechanism eliminates potential mechanical backlash that can occur in other types of locks where the drive mechanism might be more complex. Understanding this concept is crucial, particularly for locksmiths, as it impacts how they approach lock manipulation and installation, ensuring that they select the appropriate combination locks for various applications based on their design and functionality.

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The position of the dial when locked

The distance the lever travels to unlock

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