carbon seatpost issues.

stevie coles
stevie coles Posts: 37
edited July 2011 in Workshop
hi all.
i have a pro-lite carbon post, but the carbon serrations that bind onto the aluminium saddle rail support have worn down.
i have tried to use araldite to bind the two parts together, but it only was a partial succsess.
it lasted a hundred miles or so before the join cracked.
im thinking about quick metal next.
anybody had succsess with a problem like this?.
cheers!. :D

Comments

  • desweller
    desweller Posts: 5,175
    Mm. Epoxy would have been my first port of call too.

    Technique is everything with Araldite though. Did you apply a bit of sandpaper to the mating surfaces to give the araldite something to grip? Did you take any paint off and degrease it with a good solvent (e.g. petrol)? It's useful to preheat your oven to a low temperature (~60 degrees or so), bond the parts together, then use masking tape to support the joint, and 'cook' it for 30 minutes.

    EDIT: Always leave a high stress part for 24 hours before using, even if it's the 15 minute Araldite.
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  • stevie coles
    stevie coles Posts: 37
    yeah everthing was clean before application.
    no painted surfaces or anything like that.
    ive tried it again, with more hardener in it, just over the 50% ratio they suggest.
    will c how this goes.
    if it dont work, then its either loctite 242, or quick metal.
    trouble is im 87kg, so maybe my weight will just be too much for em!. :?

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