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Bicycle lock
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Bicycle lock
A bicycle lock is a security device used to deter bicycle theft, either by simply locking one of the wheels or by fastening the bicycle to a fixed object, e.g., a bike rack.
Locking devices vary in size and security, the most secure tending to be the largest, heaviest and least portable. Thus, like other security equipment, bicycle locks must balance the competing interests of security, portability, and cost. Some are made of particularly expensive materials chosen for their acceptable strength and low density.
A U-lock is a rigid metal ring in the shape of the letter U. The U part of the lock attaches to a crossbar section, and for this reason they are also called D-locks. To lock the bicycle, one locks it physically to some other object, such as a bike rack, parking meter or other pole installed securely in the solid ground. Merely locking the bike frame to the wheel is not recommended because, although it cannot be rolled away, the entire bicycle can still be lifted and carried away.
U-locks are more secure than most other kinds of locking mechanism because they are more resistant to cutting with high-leverage hand tools such as bolt cutters. A common brute force method to break open U-locks is to use a long length (perhaps 2 metre) of pipe to twist the lock open (although this method is more commonly used to defeat chain and cable locks).
Folding locks, sometimes also called foldable locks, made from connected steel plates that can be moved around and folded together using hinges. This design makes it much more flexible than a U-lock, at similar strength but slightly more weight. The movable links make it difficult to use saws, and the flat profile also makes it difficult to use bolt cutters. When folded, it is easy to carry, especially when using a frame mount.
Depending on the model, various lengths and security classes are available, and both combination and cylinder locks are also offered. Available lengths range from 75 cm to 110 cm, and weights range from 890g to 2300g
A chain lock is a chain with a lock. It often has a key or a combination lock attached to it. A long enough chain can pass through both wheels, the frame and attach the bicycle to an immovable object. Because of their inherent flexibility, chains are easier to secure around tricky-shaped objects than D-locks.
Chains vary widely in their security level. If the chain is bought from a hardware store, it is most likely made from basic iron or steel and can easily be cut with a relatively inexpensive pair of bolt cutters. Chains specifically designed for bike security are often case hardened and may feature Hexagonal or Trapezoidal link surfaces more impervious to hand tools.
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Bicycle lock AI simulator
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Bicycle lock
A bicycle lock is a security device used to deter bicycle theft, either by simply locking one of the wheels or by fastening the bicycle to a fixed object, e.g., a bike rack.
Locking devices vary in size and security, the most secure tending to be the largest, heaviest and least portable. Thus, like other security equipment, bicycle locks must balance the competing interests of security, portability, and cost. Some are made of particularly expensive materials chosen for their acceptable strength and low density.
A U-lock is a rigid metal ring in the shape of the letter U. The U part of the lock attaches to a crossbar section, and for this reason they are also called D-locks. To lock the bicycle, one locks it physically to some other object, such as a bike rack, parking meter or other pole installed securely in the solid ground. Merely locking the bike frame to the wheel is not recommended because, although it cannot be rolled away, the entire bicycle can still be lifted and carried away.
U-locks are more secure than most other kinds of locking mechanism because they are more resistant to cutting with high-leverage hand tools such as bolt cutters. A common brute force method to break open U-locks is to use a long length (perhaps 2 metre) of pipe to twist the lock open (although this method is more commonly used to defeat chain and cable locks).
Folding locks, sometimes also called foldable locks, made from connected steel plates that can be moved around and folded together using hinges. This design makes it much more flexible than a U-lock, at similar strength but slightly more weight. The movable links make it difficult to use saws, and the flat profile also makes it difficult to use bolt cutters. When folded, it is easy to carry, especially when using a frame mount.
Depending on the model, various lengths and security classes are available, and both combination and cylinder locks are also offered. Available lengths range from 75 cm to 110 cm, and weights range from 890g to 2300g
A chain lock is a chain with a lock. It often has a key or a combination lock attached to it. A long enough chain can pass through both wheels, the frame and attach the bicycle to an immovable object. Because of their inherent flexibility, chains are easier to secure around tricky-shaped objects than D-locks.
Chains vary widely in their security level. If the chain is bought from a hardware store, it is most likely made from basic iron or steel and can easily be cut with a relatively inexpensive pair of bolt cutters. Chains specifically designed for bike security are often case hardened and may feature Hexagonal or Trapezoidal link surfaces more impervious to hand tools.
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