How much distance should there be between the bike light and the magnet? Mille Stech Jensen June 13, 2018 08:21 Updated You should strive to have a distance of approx. 1-3 mm between the bike light and the magnets. Related articles My CPH light does not flash? The beam is too weak if you ask me - is that just how it is? Is there any advantage of adding extra magnets to my CPH light? What brake type does the CPH light fit? Do the rim have to be in a specific material for NOVA to work? Comments 0 comments Article is closed for comments.