Originally Posted by
icemilkcoffee
If you are using that clamp on cable stop, another way to prevent cables rubbing on the head tube, is to have the two cables cross each other just behind the head tube, but before they go into the cable stops.
That might reduce rub but it won't easily prevent it altogether.
Originally Posted by
icemilkcoffee
Obviously you would have to mount the clamp with the cable stops on top.
That depends very much on whether the cables go under or over the bottom bracket. While most modern bikes go under, many older bikes have over-bracket braze-ons (and many more used clamp-on guides that put the cable on top).