Originally Posted by
Al1943
You need to measure your chain often. A 24 pin interval of new chain measures exactly 12 inches. When any 24 pin interval elongates to 12 1/16th inches it's time for a new chain. You should not need to replace the cassette with each chain. A cassette should last at least as long as 3 chains.Al
IF the chain is measured often and replaced when found to be worn (as you describe above) then the cassette should not need changing. But if the chain is not measured often and the rider says one day "
I've had my bike for five years now, and ridden six-thousand miles - I will replace the original chain!" then the cassette also needs to be replaced or it will skip under load.