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Nick_S
I've also bought this on a bit of a whim. New rings, used crankset:
My excuse is that these cranks are, according to my Cyclefit file, the recommended length for me, whereas the Sram cranks which came with my second hand bike are 25mm too short. The weight saving will be roughly 200 grams. I think. I don't know what BB is on my bike. Don't know anything about the shell either. But a Clavicula is a badge of honour for any self-respecting weight weenie.
The Clavicula is 104 BCD, so I suppose I'll be needing custom rings for the rest of my life. I'll try to keep wear to the absolute minimum. The chainring instructions say not to put pressure on the pedals when using the FD. I wonder if I should give the teeth a sacrificial layer of nail varnish or epoxy resin?