The rate at which a chain wears depends on a plethora of factors. It’s important though to bear in mind that chain slop won’t wear out other components. As a result, the shifting is sloppier because the shifting ramps of the cassette or chainring need to work harder to derail the chain onto the desired cog. Worn-out rollers increase the side-to-side play in the chain. ![]() This isn’t as easy to measure, but it is common with riders who don’t put a lot of torque into their drivetrain, or perhaps spin a higher cadence. It’s often stated that a chain is worn once it reaches one per cent growth from the original 0.5in (12.7mm) pitch.Īnother type of chain wear is ‘slop’. Over time, the inner diameter of these bushings increases and the pins groove out. ![]() This is the most important type of chain wear, and the growth comes from the bushings wearing with the chain pins. 89mm in the previous photo, there is clearly some wear on the pins.Ĭhain wear is commonly referred to as ‘chain stretch’, because the chain’s pitch grows in length as it wears.
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