Originally Posted by
Andrew R Stewart
As i said the problem on relying on this fine centering screw is that it also changes the pads position WRT the rim side walls. How many of you who have said to use this method to center the brake have also mentioned this detail? If the adjustment is pretty small then this fine adjustment screw is good to go. But the problem with this method of teaching (reading forum replies) is that the small details are lost in the static, people believe what they think is the simple way out. So unless the full picture is explaned the info is incomplete. Sorry to sound harsh but the fine points matter when you get paid for this stuff. Andy.
I think you need to clarify that dual pivot calipers will not undergo change in ultimate pad position relative to the rim upon contact. The small set screw only changes the width between pads. The change in ultimate position only happens with brake shoe wear. The side pivot shoe will ride higher on the rim.
But that really not that important. Dual pivot sidepull calipers are darn easy to adjust. There is rarely a need to use the fine set screw and in the field, it is more than fine to simply use hands to adjust.
Or am I wrong here?