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  1. #1
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    is Aluxx-Grade aluminum still butted?

    The Giant website used to state that it's regular Aluxx-Grade aluminum was butted, but with it's 2013 models there is no mention of butting. If the regular Aluxx frames are not butted (and therefore not heat treated) they're only slightly better than a Wal Mart bike, no? I suppose one could tell if there's a difference between 2013 frames and previous ones by tapping on them, but I don't have access to them to compare. I did however compare the 2013 models of the Giant Revel 1 and Specialized Hardrock Sport Disc, and the Hardrock had a clearly higher pitched sound. Of course this is not a fair comparison, but it doesn't inspire confidence in the Giant. Does anyone know the story on this? Here's something about Aluxx technology from 2011. I'm wondering if it's still accurate: Giant?s AluxX Aluminum Frame Technology | WHEELLIFE ADVENTURE
    Last edited by kosis; 04-26-2013 at 04:11 AM.

  2. #2
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    Re: is Aluxx-Grade aluminum still butted?

    I think you will find that Giant aluminium frames are amongst the most advanced available. In general more advanced than Specialized aluminium frames.

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  3. #3
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    Re: is Aluxx-Grade aluminum still butted?

    Specialized's low end bikes, like the hardrock, are all made by Giant.

  4. #4
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    Quote Originally Posted by kosis View Post
    If the regular Aluxx frames are not butted (and therefore not heat treated) they're only slightly better than a Wal Mart bike, no?
    First, butting and heat treatment are unrelated operations. Butting is mechanical treatment of tube walls into different thicknesses (Reynolds Technology). Heat treatment is controled heating and cooling of welded frames in order to relieve welding induced stresses and tweak mechanical properties of the frame alloy. Therefore, butting doesn't imply heat treatment.

    Second, Giant frames are usualy hydroformed which is actually more advanced forming operation than 'plain' butting.

    And third, if the frames weren't heat treated we would know it already.

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