On my bike, changing from 17-40 to 18-43 will shorten the distance from sprocket to sprocket by a little under .65 inch.
I have enough adjustment for that. I will probably make this change next time I need a new chain.
Posted Yesterday, 03:51 PM
Please explain, if not here, start another thread.
Here is a link that will let you calculate most everything related to chain and sprocket changes.
It has a section where they look at possible chain wear.
The same tooth same link section can show you combinations to avoid.
Gearing Commander