12-18-2022, 07:21 AM
With one bicycle I bought, when it was brand new, I could not ride up hill without the chain jumping teeth on the chainring. With other bicycles, the chain has jumped teeth on the chainring on occasions, when trying to accelerate quickly.
I recently replaced the chainring on my bike twice. The first replacement had plastic cranks, which broke when trying to accelerate quickly. I discussed this in another post.
The chainring I am using now, is a new reproduction of a vintage chainring, made for repairing old bikes. The teeth on this are much longer, wider and thicker than the teeth on modern chainrings. The chain never jumps teeth, however much power I apply to the pedals. I will probably never wear this chainring out.
When seeing the difference, I have come to the conclusion, modern chainrings are like old chainrings, partly worn out, so they need to be replaced sooner.
Following is a photograph of a modern chainring, superimposed on a photograph of an old style chainring.
I recently replaced the chainring on my bike twice. The first replacement had plastic cranks, which broke when trying to accelerate quickly. I discussed this in another post.
The chainring I am using now, is a new reproduction of a vintage chainring, made for repairing old bikes. The teeth on this are much longer, wider and thicker than the teeth on modern chainrings. The chain never jumps teeth, however much power I apply to the pedals. I will probably never wear this chainring out.
When seeing the difference, I have come to the conclusion, modern chainrings are like old chainrings, partly worn out, so they need to be replaced sooner.
Following is a photograph of a modern chainring, superimposed on a photograph of an old style chainring.
![[-]](https://forums.bikeride.com/images/flatty/collapse.png "[-]")
