This...
https://www.ktmforum.co.uk/off-road-end ... amily.html
Makes things a LOT clearer
BBC story re headstock aluminium alloy corrosive cracking
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Richard Simpson Mark II
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Re: BBC story re headstock aluminium alloy corrosive cracking
Perhaps a heads up that shiny pretty CNC parts are not always up to the job.
I would like to know what actual alloy was used though, as my experience dealing with AAIB investigators is that so-called experts whilst good at analytical methods don't always come to a logical conclusion or research the application thoroughly, it may be that the material is actually quite a common one for this application but perhaps design or Quality control and/or other factors were more significant.
Stress corrosion is a concern in all Aluminium alloys
accidents caused by Component failure are always doubly tragic, poor sod
I would like to know what actual alloy was used though, as my experience dealing with AAIB investigators is that so-called experts whilst good at analytical methods don't always come to a logical conclusion or research the application thoroughly, it may be that the material is actually quite a common one for this application but perhaps design or Quality control and/or other factors were more significant.
Stress corrosion is a concern in all Aluminium alloys
accidents caused by Component failure are always doubly tragic, poor sod
Its a trick............get an Axe
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Richard Simpson Mark II
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Re: BBC story re headstock aluminium alloy corrosive cracking
Apparently, the German company concerned supplies the parts to KTM as 'Hard Parts'. I'd have thought the family might have a case to bring...
I recall an engineer telling me years ago that parts 'machined from billet' were actually like-for-like vastly inferior to parts forged or cast from the same material. The forging/casting process aligned the grain of the metal to cope with the stresses imposed whereas a piece of billet would have a grain structure unrelated to the component's shape.
I recall an engineer telling me years ago that parts 'machined from billet' were actually like-for-like vastly inferior to parts forged or cast from the same material. The forging/casting process aligned the grain of the metal to cope with the stresses imposed whereas a piece of billet would have a grain structure unrelated to the component's shape.
