I'm turning my old Inbred into a hack/shopper bike and want to fit a rack. However, since I last had a rack on it it's progressed to disc brakes which interfer with the rack's legs and rather than spend £30 of a disc specific rack I've tried to heath robinson it. They're BB7s too so have an actuation arm which pushes things out further. The rack legs are supposed to sit flush to the dropouts and bolt in but to fit the rack I've had to bend the legs out over the caliper quite some way. This pulls the driveside of the rack into the tyre so obviously it's had to be stretched out on that side too to centre (roughly) the rack over the tyre - in fact it's not fully centred, I decided not to do this to avoid stretching things further.
Everything it set and feels nice and solid, but there's an awful lot of tension in the rack legs (I reckon they've been splayed out 3 or 4 inches more than they should be) and I can just imagine them snapping and ending up in the spokes! I know that I'm not the first to fit a standard rack over a disc caliper and it has saved me a bit of dosh, but equally I'd like to avoid accidents.
It's not pretty (a mixture of nuts, bolt, washers and bits from old V-brakes) but it does seem to work for now. What do people think?