DRAFT COMPONENT

A broken bike chain.

Failure on link on Shimano chain occurred within 10 miles of fitting due to incorrect insertion of rivet/link pin.
A broken bike chain.

Failure on link on Shimano chain occurred within 10 miles of fitting due to incorrect insertion of rivet/link pin.
A failed bike component.

Failed Dura-ace crank. Casting issue, fatigue crack nucleation until final catastrophic failure.
A failed bike component.

Failed Dura-ace crank. Casting issue, fatigue crack nucleation until final catastrophic failure.
A failed bike component.

Carbon fork spigot failure. Cause: air pocket on stem spigot reduced the contact area of the surfaces to be bonded.
A failed bike component.

Carbon fork spigot failure. Cause: air pocket on stem spigot reduced the contact area of the surfaces to be bonded.
A failed bike component.

Two failed steerers. The alloy item on the right is the nucleation of a crack before the final catastrophic failure; the item on the left is a bonding failure between the stub of the alloy stem and the composite steerer.
A bike component that failed because of welding issues.

Failed stem. The bead of weld runs around the circumference but only about 40% of that was welded through fusion of the parent metals.
A bike component that failed because of welding issues.

Failed stem. The bead of weld runs around the circumference but only about 40% of that was welded through fusion of the parent metals.
A bike component that failed because of welding issues.

Steel components failure - welding issues. Destructive testing in the form of sectioning was necessary in order to ascertain that the eventual failure was a direct result of lack of fusion in the weld process. Failure caused by nucleation of an initial crack.
A bike component that failed because of welding issues.

Steel components failure - welding issues. Destructive testing in the form of sectioning was necessary in order to ascertain that the eventual failure was a direct result of lack of fusion in the weld process. Failure caused by nucleation of an initial crack.
A failed bike component.

Failed Dura-ace crank. Casting issue, fatigue crack nucleation until final catastrophic failure.
A failed bike component.

Body/Chassis of the pedal detached from spindle which then impaled rider’s leg. Caused by the collapse of the ball race around spindle distally leading to nyloc nut unscrewing. (This highlights the importance of investigating any resistance in rotation of pedal on spindle and/or noise/vibration/harshness).
A failed bike component.

Body/Chassis of the pedal detached from spindle which then impaled rider’s leg. Caused by the collapse of the ball race around spindle distally leading to nyloc nut unscrewing. (This highlights the importance of investigating any resistance in rotation of pedal on spindle and/or noise/vibration/harshness).
A failed bike component.

Body/Chassis of the pedal detached from spindle which then impaled rider’s leg. Caused by the collapse of the ball race around spindle distally leading to nyloc nut unscrewing. (This highlights the importance of investigating any resistance in rotation of pedal on spindle and/or noise/vibration/harshness).
A failed bike component.

This is one of 3 identical failures of an FSA crank spindle/axle caused by a design machining dimension which predicated the part to failure.
A failed bike component.

This is one of 3 identical failures of an FSA crank spindle/axle caused by a design machining dimension which predicated the part to failure.
A failed bike component.

This is one of 3 identical failures of an FSA crank spindle/axle caused by a design machining dimension which predicated the part to failure.