Re-glue BB30 sleeve in to carbon frame ?

bikeav8or
bikeav8or Posts: 77
edited January 2019 in Workshop
I have a GT Grade with a BB30 BB. The BB30 part is a plastic tube bonded in to the carbon frame. It has come loose and I need to glue it back in.

Has anyone got any Epoxy recommendations to glue plastic back in to carbon?

It's for a cheap project so dont want to send it to a Pro workshop

Comments

  • mr_mojo
    mr_mojo Posts: 200
    Is is pressfit? I use Loctite 638 on my pressfit bottom bracket to hold in place. It’s not the tightest fit but this Loctite holds it.
  • Bumo_b
    Bumo_b Posts: 211
    When the LBS fixed in an adapter on my BB30 to change it to hollowtech, the adapter was supplied with Loctite 638 as mentioned above. Done over 10000miles since and not a squeek or an issue with it.
  • Vino'sGhost
    Vino'sGhost Posts: 4,129
    All the info and material you need can be found here https://www.easycomposites.co.uk
  • trivial_poursuivant
    trivial_poursuivant Posts: 1,136
    oxoman wrote:
    Given its a carbon frame and plastic sleeve loctite 638 isn't really suitable. Loctite 638 is really for metal to metal. For a carbon frame and plastic sleeve I'd expect a resin based based adhesive to be more suitable, hence suggesting a repair at carbon repair specialist.

    Correct. As the above are actually gluing the inner shell to another bit of metal in a sleeve you would use 638 but this is the outer shell to a composite material. Although since BB30 is rubbish, I would use this opportunity to get a conversion to threaded done at the same time. No creaking and better choice of chainsets available.
  • bikeav8or
    bikeav8or Posts: 77
    Thanks chaps I will give Easy Composites a ring.

    It's for a commuter that will have shrapnel put on it as it will be locked up outside at the airport overnight so the less spent the better. It will have a praxis adapter that expands in to the shell also The worst that can happen it it will come loose again and creak

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