What would cause this frame to snap in half?

It cut half clean where welding mark is. its from one of customers and he said he never exceeded weight limit Is it still safe to ride?


Hydrogen embrittlement

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I reckon you are joking, right? Right? Doubly so if this is a customer’s bike, do you want the liability?

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The Jenga level of washers on the brake mount raises enough questions that I’d take anything associated with a massive dose of salt.

And the bike is dead. Do not ride it, period.

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Bike is toast. Of course the stack of washers on the caliper mount bolt is wack, (bolt too long) but when an adapter is used under a brake caliper, cup and cone washer sets should be used on top of the caliper’s mounting tabs, as the bolts are no longer perpendicular to them.

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