As of late, I've been building some centerlock wheels. I have no real compelling reason to use centerlock vs standard 6 bolt as it seems that when viewed as a system, weights are equivalent (system meaning hub and rotor weight). The one advantage I have found is for travel, and only if you remove your rotors to bag or box your bike. Removing centerlock rotors is a 30 second endeavor vs a few minutes for 6 bolt rotors. Plus the convienence of handling one lock ring opposed to 6 little bolts. But I digress.
As cyclocross season approaches I'm faced with the challenge of having a quiver of 3 sets of disc wheels, 2 six bolt and 1 centerlock, all align with the brake caliper when changing wheel sets. With 6 bolt there are rotor shim spacing solutions currently available on the market. Unfortunately, I'm unable to find a rotor shim set available for centerlock. Soooo.... I'm making one! The set will fit a standard 35mm centerlock hub, not the oversized 46mm. They are stainless and .0075" thick ( about .02mm for the metric inclined). If you need a set, let me know as I'm willing to make extras!