Fork Failure

[mr.electric]

Pictures of the failed fork

[Hillhater]

Even without close inspection , it shows all the characteristics of a classic stress cycle propagated crack failure.
IE.. defective part that failed after repeated use, rather than a failure from singular overload.

[iamsofunny]

Looks like bad metal, not even pure steel, like recycled steel with random bits of scrap mixed in

[dogman]

What I think I see, is half the tube has a fresh crack, shiny metal. The other half looks less shiny, like it was cracked a long time. Reeks of a factory defect from the appearance in the pic.

But I could just be seeing a shadow in the pic.

Thanks for showing it.

[mr.electric]

This is the extent of the detail my photo shows.

[chilledoutuk]

that's a really strange fork design tbh the forks themselves are very beefy but then it goes up into the crown where its much smaller than what i would make it considering the size of the fork prongs.

What this means is that those forks wont flex very much and instead the flexing will occur where the break is.

Basically they they seemed to have beefed up the forks which has shifted the stress on the next weakest component the crown in this case.

Look at it like an airplane wing if they were rigid they would form stress fractures close to the body of the plane but by being flexible along the whole length the stress is spread out over the whole wing and dampening any sudden stresses.

I believe its important to have a evenly designed strength fork with strong dropouts and torque arms to minimise the chance of sudden fractures like this occurring.

The material also looks like something like car exhausts are made of not ideal for such a critical component.

[docnjoj]

Has anyone contacted the manufacturer yet?
otherDoc

[Hillhater]

This is the extent of the detail my photo shows.

Yep, .. classic fatigue failure / stress crack, starting from a weld defect.