Road Bike Rim Failure

It was a fatigue failure.

Road bike rim failure. So now you know how to spot a worn out rim. Levers brake callipers hoses. This can easily cause a catastrophic failure of a worn out rim causing the rider to be launched hard into the ground. See below for two sem scanning electron microscope images of the failure area.

You can literally wear away the rim surface with your brakes until the rim is too weak. Another easy and fast bearing test is to see if there s any lateral side to side play. I replaced both tires with new. We send him off around the world to get all the news from launches and shows too.

In aug 2018 i bought a giant road bike that came with giant slr 1 tubeless tires. Check for bearing play. The all up weight of a disc brake bike is higher than that of a rim brake bike. The failure mode other than from accidents is simply the wearing down of the brake surfaces over time see this question.

Not only is there 100psi or so pushing out from the inside the rim takes a lot of abuse and shock from running over bumps in the road as well as flexing under load. Use of improper or contaminated brake pads will lead to excessively high braking temperatures which can cause premature rim wear and or failure which can lead to serious injury and or death warns zipp. Mat has been road cc technical editor for over a decade testing bikes fettling the latest kit and trying out the most up to the minute clothing. Test for this by holding the top of the wheel while it s in the bicycle and gently pushing and pulling sideways to feel for movement of the wheel.

This road bike hub caused the rear wheel to collapse as 4 spokes pulled out of the hub flange.