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WAVY DISC TEST A recent test carried out by MCN shows that there is no advantage to using wavy type brake discs. It can be found on page 18 of their October 13 2004 issue. The test compared the performance of wavy discs against normal type discs. The test was carried out using a MotoGP-spec 2D datalogger, onboard a 2004 Suzuki GSXR-600 road bike. Here is the data; - Braking distance - stopping from 80mph to 0mph After the discs had all been bedded in, all three versions produced very similar results. The distances were measured after hitting the brakes as hard as the rider could when he reached 80mph. They were close enough for the error tolerances of the datalogging system, so there was no real difference in total braking distance. - Braking Lever Pressure - This was measured to see how hard the rider had to squeeze the lever to stop in a set distance. The wavy discs required the rider to use more pressure, possibly due to a smaller average pad contact area. The Galfer discs took the most effort. It also shows that the wavy disc will heat up and cool quicker, which can lead to inconsistent braking.
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