Why has this hole appeared in my frame?

Lumbricus
Lumbricus Posts: 4
edited April 2011 in Workshop
People, I would appreciate your thoughts on this matter.
While sorting out creaking peddles on my road bike today I noticed a small puncture mark in the underneath of the left chainstay, just as it meets the bottom bracket.

The paint appeared flakey so I picked a bit away to investigate. And I found this hole:

Snc14159b-1.jpg

Snc14167b-1.jpg

My first thought was that something from the road has bounced up and punctured the paint and tube. There was white powder under the flakey paint which I assume to be Aluminium oxide.

The frame is a three year old Ribble EM2 dedacciai used in all conditions but cared for. Is this normal for a three year old frame? I have read elsewhere on the internet that these frames aren't very strong.

Is there any hope of salvage? Or, as I suspect, is it time to buy a new frame?

Comments

  • emx
    emx Posts: 164
    scrap, is my guess....some serious corrosion there...
  • rockmount
    rockmount Posts: 761
    It's called corrosion, and your frame is fubar !
    .. who said that, internet forum people ?
  • Thanks for the replies guys.

    Is this likely to have been corrosion from riding in the salty winter road? I never would have thought it would eat through a frame like that.
  • andyrr
    andyrr Posts: 1,823
    Looks like there is a small dent visible in the 1st pic ? Stone has pinged against the frame, chipped the paint off and then the bare metal has been exposed to the air, stone may even have pit a small hole in the metal itself and then the corrosion has set in. EM2 frame tubing probably v thin at some points so is prone to that ? Pretty bad luck, a risk with the really light alu frames I guess.
  • giant_man
    giant_man Posts: 6,878
    Alu frames don't last forever, especially when used in all weathers, the better quality they are, the longer they will last imo.
  • Monty Dog
    Monty Dog Posts: 20,614
    Looks like it corroded inside-out - water spray from the real wheel trickles down the seat-tube and collects in the BB shell. Putting your bike away full of salty water in a warm environment is ideal for corrosion. EM2 is a very thin, heat-treated alloy and wouldn't be expected to last long under those conditions.
    Make mine an Italian, with Campagnolo on the side..
  • Thanks again for all the replies people. New frame time.