How to know when a cassette needs to be replaced.... I got a sign.
07-28-21, 12:02 PM
#26
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A worn chainring with a new chain won’t skip, but it will cause “chain suck”, where the chain won’t disengage at the bottom of the ring. Chain suck usually happens when shifting. It can cause a mess, as it may pull off the rear derailleur, wrecking the derailleur hanger.
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07-28-21, 12:23 PM
#27
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I probably have 30,000-40,000 miles on my cassette and it is as quiet as when it was new and still shifts perfect. I am very careful about lubing my chain and drivetrain and replacing chains exactly when needed. I ride almost exclusively rolling hills and am shifting constantly using all of my 10 gears probably as equally as would be possible. It is possible that I have only 3000-5000 miles on any single rear cassette gear ring whereas someone else riding exclusively on flats may have the vast majority of their miles on just 1 or 2 of the gears. I can't think of a good reason to replace the cassette if it is very quiet and shifts perfect.
07-28-21, 03:30 PM
#28
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A worn chainring with a new chain won’t skip, but it will cause “chain suck”, where the chain won’t disengage at the bottom of the ring. Chain suck usually happens when shifting. It can cause a mess, as it may pull off the rear derailleur, wrecking the derailleur hanger.
07-28-21, 04:44 PM
#29
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Maybe it was an auto-shift off the ring. A worn chainring might cause that.
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07-28-21, 04:46 PM
#30
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Nope. Straight up replacement of the small chainring (34T) stopped the skip. Skip started immediately after replacement of the chain to a new DA 11s chain. Nothing else was changed and no further skipping over the next several thousand miles. All of that is still working just fine on the bike. Certain that was the cause and replacement was the solution.
