Bicycle Wheel Hub Types

This cylindrical mechanism ratchets counter clockwise for coasting and locks clockwise for driving the bike when pedaled.

Bicycle wheel hub types. Most high performance brands have pursued increased. If your bike has rim brakes you don t need rotor attachments. As bikes have front and rear wheels so too have they front and rear specific hubs. The cassette typically has a lock ring to secure it to the freehub.

The freehub concept answers several drawbacks encountered with the freewheel design. Be careful with axle types and the rear hub spacing if you re interested in doing this does your bike have disc brakes. The rear cogs are attached to the hub in one of two ways. The hub is laced to the wheel rim with spokes the number pattern and type of which depends on the design and intended use of the wheel.

Though it is possible to use a disc brake hub with a rim brake wheel it is not common. Rear bicycle hub has one main role that is allowing the wheel to turn freely while keeping it attached to the frame at the same time. Modern trends are leaning towards cartridge bearings. It consists of a cartridge that is inserted in a sleeve in the appropriate bicycle part that needs to turn a wheel hub headset bb shell etc.

There are two main hub types. Balls are packed with two races in a sealed cartridge. The mechanism is contained inside the bicycle wheel hub shell. Freehub the mechanism that allows the rider to coast is built into the hub.

Found on most bikes a freehub has a spline that precisely fits into the center of your rear cassette. A typical road bike wheel consists of a hub in the centre containing the axle and bearings which allow the wheel to freely rotate. The rear hub has one or more methods for attaching a gear to it. The front hub is simply designed to enable the wheel to spin while the rear hub is a little more complex as it also forms part of the bike s transmission the cassette or sprocket which drives the rear wheel.

For information on other types of bicycle brakes see the full article on bicycle brake systems. Rear bicycle wheel hubs. This post explains basic things about bicycle rear hubs i e. Newer bikes tend to use type hub called a cassette hub the cassette hub uses a freehub sytem which is a type of clutch mounted to the body of the hub.

There are two main hub types front and rear. This determines how your rear wheel engages with the cogs in your bike s drivetrain. Several major wheel manufacturers have pushed towards larger bearings in recent years and there are ever increasing hub dimensions to show.