Yes, that is in the manual for Shimano RDs, for cassettes with a maximum 27T sprocket. It does work in those limited circumstances - a Shimano RD, a big sprocket ≤27T and a double chainset with no more than 16T difference. The thing is, the other method works for everything, so which would you rather learn?
Yes, that is in the manual for Shimano RDs, for cassettes with a maximum 27T sprocket. It does work in those limited circumstances - a Shimano RD, a big sprocket ≤27T and a double chainset with no more than 16T difference. The thing is, the other method works for everything, so which would you rather learn?