I just got a pair of Rolf Pros that had this teeny little magnet on one of the bladed spokes but it’s just a tad too big for the Sapim spokes on my 404s. Does Zipp (or Sapim for that matter) make a wheel magnet that fits? I may end up making one out of an old cateye magnet but it sure would be nice to have one that was designed for the purpose.
Good question. I’ve been using an old Cateye magnet on mine (my computer is a sigma, but the magnet wouldn’t fit on the bladed spokes). I’d be curious as to finding a better alternative than the one I (we) have.