A comparison test of the Disk Braking System versus the conventional rear brake pad found on most inline hockey skates was set up. This test consisted of skaters moving along at various control speeds and then applying the braking systems until they came to a complete stop. The distances each skater took to stop were measured while using both the DXS Braking System and the conventional brakes and are shown below.

5 MPH 2.5-3.5 Ft. 3 Ft. 7-11 Ft. 9 Ft. 67%
10 MPH 9-11 Ft. 9.5 Ft. 19-24 Ft. 20.5 Ft. 56%
15 MPH 17.5-25 Ft. 22 Ft. 36-41.5 Ft. 40 Ft. 45%

Test notes:

      • All tests took place on asphalt pavement
      • Multiple skaters of varying ability were used
      • A timed “speed trap” assured testing accuracy
      • Each test was composed of five runs
      • Distances were measured in feet

A pre-teen hockey player who had never before used a brake found the DXS not only easy and quick to learn but also effective at making safe and controlled stops with just a few tries. Here’s his testimonial.

Tests by Liz Miller, Inline Author/Instructor

California skater Liz Miller has a world-wide reputation as an inline brake expert, advocate and tester. She has been sponsored by Rollerblade since 1995 when she became a fan of their award-winning ABT brake system. Her table of Brake Test Summaries at gives informal comparisons of several braking technologies – some in production, some not – going back to 1992.

Adult Prototype Test Results

Liz is a master at braking and at teaching skaters how to use the heel brake. She spent a day comparing a 4XS-equipped recreational skate with an entry-level recreation skate and a high-end fitness skate (taller wheels and a longer wheel frame), both set up with the standard rubber stopper. The test location was on a sloped asphalt street with smooth pavement with approach speeds approximately 12 mph.

Baseline tests by this expert yielded the following average distances to achieve a full stop:

  • 4XS recreation skate: 16 feet (aligns with DXS Average in table above)
  • Off the shelf recreation skate: 23 feet (see “Conventional” above; add 8-10 feet for typical users)
  • Fitness skate: 30 feet (see “Conventional.” Brake is too far back, reducing leverage and friction)

“Achieving consistent 16-foot stopping distances proves the DXS technology is a major ‘brake-through’ for the sport of inline skating and achieves the claimed 50% reduction! Not only was the DXS brake easy to engage and disengage, but it was surprisingly quiet and smooth; I didn’t have a chunk of rubber vibrating over the asphalt surface.”

Youth Prototype Test Results

In 2012 Liz arranged a beginner lesson for a 9-year-old who had never been on inline skates. The goal was to evaluate a beginner’s experience using a youth prototype of the 2-wheel disk brake, the 2XS. Liz reported the following results (more here)

  • “Within an hour of starting, Sean was able to make effective, cuff-activated stops. Within 90 minutes, he was able to stop at a chalk line drawn on the pavement.
  • “Sean was able to skate further and further up the south end of the street where the slope was steeper and then engage the brake with just enough pressure to prevent what would have been a frightening speed build-up for anybody at his skill level.
  • “It’s a significant plus that within 90 minutes, a typical youngster was able to master safe stopping and apply speed control on a sloped street. The lucky manufacturer who licenses the DXS inline braking technology will surely seize the market.”
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