My chain tool is broken. Its a fatigue failure, the crack started at the top surface of the broken piece and propogated down, taking a chunk of metal with it. I got it second hand from a person in the club. It has no brand name but the "Made in Taiwan" is more than sufficient evidence for me. The chain pushing against that piece caused a lot of stress, besides the sharp inside edges probably also created a stress riser. Poor manufacturing.. ? Seems to me as if this tool was made using powder metellurgy, looking at the inside cleavage and the grains, if so perhaps it was not heat treated enough I think.
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I have had a chain tool break before as well. However, it wasn't the end like yours, it was the fork in the middle that gets inserted between the links. I now have a Park model that works great and fits well in my saddle bag.
ReplyDeletei think someone before me used it in the wrong fashion? park tools are good, but they're on the pricey side. i guess you get what you pay for.
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