Francesco Devittori wrote:
> D'ohBoy wrote:
>> Francesco Devittori wrote:
>>> Hi all,
>>>
>>> I just repaired the rear derailleur cable stop that broke off from my
>>> carbon fiber chainstay, but I don't know if it will hold in the long
>>> run.
>>>
>>> Is there a standard way to test this? How do frame builders do it?
>>>
>>> Thanks,
>>> Francesco
>> How was it originally attached? How did it become detached? Was there
>> any damage to the chainstay? How did you re-attach it?
>>
>> To better serve you,
>>
>> D'ohBoy
>
> The cable stop is a square alu thing. It was fixed with a little screw
> and very little glue (the bike is a first-generation C40).
> I was able to drill out the broken screw, then attach the stop with a
> similar screw and a good amount of bi-component epoxy glue (called
> Araldit, I don't know if it's a known brand -it is here).
> I guess the glue is what keeps things together, I don't think the screw
> alone is strong enough to keep the cable stop in place under force.
>
> A good thing is that the contact surface is relatively large and the
> shape of the cable stop is a bit rounded and matches the chainstay.
> Before gluing I roughed both surfaces with sandpaper and cleaned them
> well.
> It's now sitting for 24 hours, but already after a couple of hours I
> was not able to move the cable stop with all the force of my hand.
>
> What I'm most concerned is the long term durability (also cold
> conditions/etc).
> I don't want that it detaches in the middle of a race...
>
should be stronger than the original. unless you have derailleur
problems that cause significantly excess tension, it should be fine.