Thread: Ooooh.. So that's why it says Bayer on the side of AndyMark KOP wheels
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Unread 05-04-2007, 15:50
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Re: Ooooh.. So that's why it says Bayer on the side of AndyMark KOP wheels
WildStang is using these wheels and we have broken a total of 7 now. The failure first appears as a crack on one or two spokes right next to the hub. I believe that this is occuring due to fatigue failure from continuous side loads.

How do we get so much side loading? Well, we have crab/swerve drive. Each time we make a quick change in directions from straight to side movements, it puts a heavy load due to momentum. Do this enough times and the wheels are being bent back and forth until they finally crack. Once a spoke cracks, the rest will soon follow.

So, I believe these wheels are great, except for crab/swerve drive applications. I want to beg Andy and Mark to beef up the spoke cross-section or use a more robust material.

Raul
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Warning: this reply is just an approximation of what I meant to convey - engineers cannot possibly use just written words to express what they are thinking.