I understand that the W3 measurement goes from the BB center to the large chainring; but why, when the CL value is actually derived from the center or middle of the two chainrings on the crank or from the single chainring when using 1x?
So as an example: I have a double crankset that has a CL of 45.5. There is 8mm spacing between the two chainrings. So then would I set W3 to 49.5?
What about with a 1x crankset that has the same CL of 45.5? Would W3 remain at 45.5?
I'm probably overthinking this, but I feel that having an actual CL value, either in place of or in addition to W3, would be much simpler to determine.