My wife and I are going on a tour this summer in Europe on our tandem which happens to have disk breaks other than fitting problems I was wondering if anyone knows whether disks put on any undue strain on the back end of the bike as the wheels, breaks, and bike rack are all basically fitted in the same area. I am not a mechanical person so I am just curious if anyone has heard of a frame breaking on a bike with disks that was also carrying a heavy load. I should add that combined we weigh under 250 pounds so even fully loaded we will probably be light than a lot of teams just going out for a day ride.
Why I'm on the topic has anyone used a Topeak super DX bike rack. I hear they are made to fit a bike with disks and just wondered what people thought of them.