Originally Posted by
SpeedyChix
Older 29er mtb disc wheelsets work great for this. They are narrower internal than mtb use for today. If they have convertible front hub you can swap caps from 15 to 12; or pick up one of the 15 to 12mm front axle shims available from ti cycles or at least one vendor on eBay. Another is to watch for a CX rider who is upgrading their stock wheels for something lighter.
Thanks for the tip! I'm thinking I'll need minimum 32 spokes in the rear for on / off road light touring...