black s13 wrote:ok, let me reword. if the whole spoke/face where the wheels touches the hub is exactly the same, as in a lower offset just moves the whole center in, increasing the lip the same amount as the offset is decreased, the brake clearance will not be changed.
Sort of. In effect, the spoke design would be changing slightly since the spokes would be more "bent" inwards, which may be enough to make it clear brakes, but I see what you're getting at.
black s13 wrote:if the offset is lowered by effectly machining spacers onto the hub portion (lip stays the same, the mounting surface just moves back) then the brake clearance will be changed.
This is correct.
Generally with a wider wheel and lower offset (or same width and lower offset) the spoke pattern/design remains the same, and the lip on the outside of the spokes is increased. This is similar to the first situation you described.
~matt