Questions tagged [fatigue]

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5
votes
2answers
421 views

Do forged alloy crank arms suffer from age-related fatigue?

Alloy does have not have a fatigue limit. Does that mean that forged alloy crank arms have a theoretical end of life? Should I worry about 40 year old crank arms? Could someone with a little knowledge ...
6
votes
4answers
2k views

Cause of broken spokes (pictures included)

I never had this problem before. Two spokes on the drive side of my road bike's rear wheel broke at the J bend, and I'm trying to identify the cause. The wheel has 32 spokes total, made of steel, ...
2
votes
1answer
57 views

Safe to use 10-speed wheel in a aluminum frame bike made for a 7-speed

I have a '91 Trek aluminum road bike which was originally equipped with a 7-speed drivetrain. I upgraded the drivetrain on another bike, so I transferred the old 10-speed drivetrain, to the Trek. The ...