How Loopwheels work

Absorbing vibrations and smoothing roads.

Premium carbon composite materials

Loopwheel springs are made from a composite of layers of different materials, including carbon. They have been carefully developed and tested to give optimum compression and lateral stability as well as strength and durability.

We work with specialist bow-makers KG Archery, based just a couple of miles from us, to develop our spring technology. They manufacture Loopwheels springs for us and bring years of experience and expertise to the job.

Self-correcting technology and great torque transfer

The three loops in each wheel work together as a self-correcting system. This spring system between the hub and the rim of the wheel provides suspension that constantly adjusts to uneven terrain, cushioning the rider from bumps and potholes in the road. The rim remains rigid and, in effect, the hub “floats” within the rim, adjusting constantly as shocks from an uneven road hit the rim of the wheel.

The spring configuration allows the torque to be transferred smoothly between the hub and the rim.

Whole Body Vibration: ISO Standard

Given the risk of health consequences associated with Whole Body Vibration (WBV), the International Standards Organization (ISO) has published several guidelines on levels of vibration exposure and their relationship to health outcomes. Specifically, ISO 2631 defines WBV exposure from a seated position. Researchers across many disciplines use the ISO 2631 standards as a framework for analyzing exposure to vibration.

In studies that have investigated vibration exposure among manual wheelchair users, it has been found that current wheelchair frames are not sufficient in reducing “Whole Body Vibration”. Loopwheels have been shown to help with this: even at slow speeds, ie when propelling manually, Loopwheels help reduce vibrations through the wheelchair frame.

You can find out more by looking at our Support for Clinicians page.