Google just throws up too much conflicting information and AI searches aren't helping either (not that I thought the hallucinating eejits would anyway).
I need to try and get my chainline correct to eliminate one more potential cause of my current chain skipping issues.
Microshift Advent 9 speed drivetrain (just humour me!).
SRAM DUB BB and cranks. 73mm BB shell.
Boost rear end.
Anyone know what the chainline actually needs to be and what spacers (and where to put them) I need to get it right?
Have you tried putting the chain in the middle of your cassette (easy with 9 speed) and either putting a straight edge down it or checking by eye?
It should run straight, assuming you have a single chainring?
If it isn’t then adjust using bottom bracket spacers and/or the correct chainring. When you’re happy then measure from the centre of the seat tube (seat tube diameter / 2) to the centre of the chainring - this will give you your chainline for future reference.