the wheel
The debate suggests that there maybe a problem inherent in this type of wheel with suggestions that the destruction of the wheel of Car 802-6 was due to metal fatigue. However, after the accident, all ICE 1s were immediately withdrawn and their wheels subjected to two inspections. This revealed no problems with any of them and the trains were returned to service.
Another theory for the disintegration of the wheel is that it struck an object, perhaps a piece of equipment that had fallen from the carriage. If this is the case, it remains to be determined if the construction of the wheel had a role in causing its complete destruction.

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