Am I right in thinking that if I wanted to make a shim for a front derailleur, 31.8 to 28.6, my shim material needs to be 1.6mm thick?
you are correct (31.8-28.6)/2
Yes, the radius of a circle is half its diameter
@jontea started
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Am I right in thinking that if I wanted to make a shim for a front derailleur, 31.8 to 28.6, my shim material needs to be 1.6mm thick?