• Is the idea that at 44.9T you just have a really shallow 'U' and at 44.1T it's deeper?

    No, the idea is that you can take money from people who don't understand mechanics. PMP did OK for a while with L-shaped cranks, Rennen are doing exactly the same thing.

  • But there must be some physical difference in between the chainrings even if it doesn't offer any mechanical difference shirley.

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