Probably not snapped and made that way for gear changesSo, I've serviced both wheels & stripped down & re-greased the cassette. I noticed that 3 of teeth on the 20T cog & 4 on the 24T cog are looking a little short, probably snapped off at some stage, so was wondering if they will still be OK?
View attachment 1340648
View attachment 1340647
Another question I had was if I want to change this bike to a 10 speed by adding a front derailleur, can I just bolt on a new front 40T cog or do I need to change the whole crank set?