Beater/commuter build. Just want to make sure those are ramps and not cracks in the chainring that would make this unsafe
by NishikiRivieraGT
Beater/commuter build. Just want to make sure those are ramps and not cracks in the chainring that would make this unsafe
by NishikiRivieraGT
7 Comments
I think you might be ok with just getting new chainrings.
The chain is supposed to sit in the valley between the tooth, as the system wears it`ll ride up on the teeth until it skips. Wich is bad if your dumping all your power into the drivetrain, you may falll over.(insert “ouch my balls”). In your picture the chain has already started its rise on the middle ring, so it will be nedd to replaced at some time. Once the slipping starts even lightly, do not postpone replacement you would feed the idiocracy.
Cranks are good to go but the chainrings have seen better days. They’ve lived a good life so time for some replacements.
Very worn, non-serviceable rings. Get a replacement Acera for $60 or so.
Those are ramps and the shortened teeth at top and bottom dead centre are intentional. Your front derailleur is too high though.
They look fine to me. Some wear ,yes,but still very much usable imho. Those steel chanrings can last a long,long time with properly lubricated chain and I think this is what you are missing. Lubrication.
That middle ring is especially trashed and the small one doesn’t look too far behind. Get a new crank. And chain. And freewheel (assuming it’s a freewheel at least)