Topeak Rack for Disc brakes
I bought a Topeak rack that is specifically made for disc brakes from REI. I put it on my '08 Cdale tandem. Bolted right on, no hassle, fit perfect. Seems pretty heavy duty. Probably not as nce as the Tubus, but I can not tell. I hang my tandem from a hook in the ceiling by the front wheel and lift the bike with my hands using the chain-stay and rack. Seems solid.