Just wanted to post a message about the fantastic products from Tubus. I bought a Logo rack and Tubus adapters to mount the unit on a road bike. (Lemond Tourmalet)
With no holes by the dropouts or braze ons on the rear down tube you need to buy a special skewer adapter for the bottom and clamps for the top. (bought the stuff from peter white cycles, GREAT little company in New England).
The pictures should tell all. By the way I had to mount the upper clamps below the brake because of the geometry of the tubes. This worked just fine and the rack is ROCK SOLID!