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Granny ring bended inside

  • 11-07-2010 4:17pm
    #1
    AstraMonti
    Registered Users, Registered Users 2 Posts: 5,718 ✭✭✭


    So today I was cleaning the beone, and since I mainly use it for commuting now, I haven't been in the granny ring in a while. I knew it was slipping but I just thought it was the limits of the front derailleur. But after a good inspection I noticed that the ring has bended inside as you can (if you can) see on the photo. Can this be fixed somehow?


Comments

  • #2
    IM0
    Closed Accounts Posts: 5,390 ✭✭✭IM0


    yes with a vice and knowledge of metalworking/bike shop experience doing the same things


  • #3
    Greyspoke
    Registered Users, Registered Users 2 Posts: 378 ✭✭Greyspoke


    Granny rings are usually steel so are pretty tough - just take it off, lay it on a flat surface and give it a good bang with a hammer, preferably a lump hammer with a bit of weight behind it - should do the trick (and if it doesn't work, they're only a tenner from CRC anyway).


  • #4
    AstraMonti
    Registered Users, Registered Users 2 Posts: 5,718 ✭✭✭AstraMonti


    The chainset is an FSA gossamer, is this what I need?


  • #5
    penexpers
    Closed Accounts Posts: 4,038 ✭✭✭penexpers


    AstraMonti wrote: »
    The chainset is an FSA gossamer, is this what I need?

    Nope, 38T/39T is way too big for a granny ring. You should be able to use any chainring so long as the BCD is the same. Looks like the BCD for the granny ring is 74mm.


  • #6
    07Lapierre
    Registered Users, Registered Users 2 Posts: 8,309 ✭✭✭07Lapierre


    Greyspoke wrote: »
    Granny rings are usually steel so are pretty tough - just take it off, lay it on a flat surface and give it a good bang with a hammer, preferably a lump hammer with a bit of weight behind it - should do the trick (and if it doesn't work, they're only a tenner from CRC anyway).


    Wouldn't recommend hitting it with a hammer directly. It would be better to "sandwich" the ring between two pieces of wood and then hit the wood with the hammer. Less likely to damage the ring this way.


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