Gear adjustment following cassette replacement

The Spiderman

Swapped,an SRAM PG950 for a new XT casssette and a new PC991 chain.Gears which changed OK before,are now not indexing properly.Is this normal?

Thought the dimensions of both cassettes would be the same,so this would be unecessary?

MarvintheAndroid

Although it's true that both are 9-speed cassettes, it's not unusual to end up a little bit out on the adjustment. Half a mil will make a difference. You should re-set your top and bottom limit stops and then adjust the indexing according to the Shimano instructions. Write back if you need more.

Marv

nicklouse

as the android says it is offten needed and there is not guaranteed start position for the cogs as they as a slide on fit and a lot depends on the hubs. but if you replaced sram with sram or you do shimano shaimano next time there should be no need to re index.