What’s a carbon bike rim?

An rim can be described as the circular portion of a wheel, which holds the tire and is connected to the hub via spokes. The majority of modern rims are made using carbon fiber. While alloy rims are more flexible and cost less to make carbon fiber rims, they are made by hand and lighter than alloy counterparts and tend to be stiffer and more durable.

We are Alice Bicycle, we make top-quality rims and other parts for cycling made of carbon fiber that is of the highest quality.

Alicebiycle Rim Cross Section View

1. Center channel/rim bed channel / drop channel

The central channel (or the rim bed) is the space that a tire may be positioned on the bead of the wheel. Access holes for spokes are made in the bed of the wheel to ensure that spokes can slide through to connect to hub. Rim bed design differs between tubular and clincher wheels.

2. Rim hooks

Rim hooks are ridges facing inwards created around the outer circumference of the rim. They give greater stability and retention, especially when there are high pressures for tires. Rims with hooks can help keep conventional clincher tires in check from blowing out in high pressure. Rims that have hooks are referred to as hooked rims while those that do not are known by the term unhooked.

3. Locks with beads

Bead locks are grooves placed between the middle channel. These locks allow tires to be easier to install and decrease the chance of burping and tire blow-off especially when pressures are lower. Bead locks are the basis of all our clincher tires ready for tubeless use.

4. Rim offset

A rim with an offset in those spoke holes in the rim bed is often referred to as an asymmetric. We apply asymmetric profiles to certain MTB wheels to ensure that spoke tension between the two sides of the wheel close than being the same. A wheel that is evenly tensioned will last longer and last longer. It will also perform better as time passes.

5. Angled holes

Nipple holes are made through the rim at an angle of (+/-6deg generally) which is compatible when paired with a hub with a standard size. Nipples can produce tension in line with the spokes instead of with an angle. Maintaining the nipple’s position and the spokes aligned results in less broken spokes and less requirement for wheel maintenance.

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