how is that carbon fiber attached to the outer metal teeth?
Superglue.
The chainring bolts (all 9 of them) go straight into threaded holes in the metal, the carbon bit just adds a bit of flexural stiffness.
@gbj_tester started
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Superglue.
The chainring bolts (all 9 of them) go straight into threaded holes in the metal, the carbon bit just adds a bit of flexural stiffness.