Corrosion on aluminium fork crown

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  • Corrosion on aluminium fork crown
  • Premier Icon bigjim
    Subscriber

    Continuing my adventures in corroding aluminium on a commuter bike, noticed I could peel the paint off this fork crown with my fingernails. Underneath is corrosion from the salty road water. The white stuff is very soft and scrapes off easily.

    For crown is a high stress area…. do you reckon it’s OK?

    thepodge
    Member

    Yes but stop scraping it off

    davewalsh
    Member

    +1 for not scraping it off. The aluminium oxide (white stuff) forms a protective layer and prevents further corrosion of the metal underneath.

    Premier Icon bigjim
    Subscriber

    Oh well I’ve taken quite a bit off already. Was planning to sell the bike, not sure white cheesy crust is a good selling point!

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