Quote:
Originally Posted by m_sasso
Funny, I use Shimano and various other brand Al chain ring bolts on my track bikes and change my rings usually more than once daily and almost never use a torque wrench. Have I broken a bolt or two over the years, yes but a rare occurrence.
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I think we're talking (typing?) past one another with the same general point. Like you, I have only broken one alloy chainring bolt. It happened because it was overtightened to an incorrect published spec. Can you successfully tighten aluminum fasteners without a torque wrench? Yes. Does experience lower your chances of breaking a bolt? Yes. Will use of an accurately calibrated torque wrench and correct torque specs lower the chances of breaking an alloy bolt? Yes.
Greg