I spend a lot of time in 19 teeth...can I replace just one?

[veggieburger]

All my gears work great....except 17 and 19. It's a Chorus 10v cassette, so they are attached.

I have another 11/23 cassette in my desk that was given to me by a friend....so probably different wear than how I use my gears. Am I asking for shifting trouble by just replacing the 17/19 teeth from my desk? Or I won't know until I try?

[Ken Robb]

It's probably worth trying. I think it may require a new chain since the old one may have "adapted" to your worn cogs. I'd guess it will work provided the 17-19 you swap in has similar wear to the cogs on the cassette you want to use.

[ColonelJLloyd]

Do it.

[oldpotatoe]

All my gears work great....except 17 and 19. It's a Chorus 10v cassette, so they are attached.

I have another 11/23 cassette in my desk that was given to me by a friend....so probably different wear than how I use my gears. Am I asking for shifting trouble by just replacing the 17/19 teeth from my desk? Or I won't know until I try?

17 and 19 skip under load? New chain? Probably be ok to swap just 17/19 from another cogset, different ratio and ramps.