bike help

Discussion in 'Bicycle Repair' started by augustine, Apr 16, 2014.

  1. augustine

    augustine New Member

    Looking at a bike, can someone tell me why a aluninum frame is a bad pick?

  2. darwin

    darwin Well-Known Member

    Aluminum isn't bad, you just need to watch the frame for cracks. That's with any frame even steel. If you have a 2stroke inframe because of vibration aluminum might be more prone to cracks but a lot of folks have no issues. Most so called alum frames are alloys and for the same mass compared to steel they are stronger.
  3. butre

    butre Well-Known Member

    I'm not a metallurgist so I couldn't give you the exact terminology one would use but aluminum is much more sensitive to vibrations than steel is so aluminum bikes tend to crack at the welds.
  4. pbeggs

    pbeggs Member

    steel maintains its strength till it is bent,.. until bent it is always the same strength,...
    aluminum even if it not stressed to the bending point loses strength as it is stressed, and develops cracks,.. even if is not stressed to the bending point aluminum will eventually fail.