Personally, I’d go vintage and choose chainrings using a gear chart. I don’t undersand the concept of “stock” chainrings but it seems people buy whole new cranks to change gearing. Of course, I friction shift and maybe that’s the difference but a big reason I prefer friction is because of the flexibility. If aluminum weakens with age, I suspect this is one of those theoretical/marketing arguments of no real consequence in real life on a bicycle. I might consider a Herse crank if you could get odd numbered teeth for them but you can’t so I’m not interested. For that kind of money, I can spring for vintage rings with odd tooth counts for my vintage cranks to really dial in the gearing I want.
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