Looking for a heavy duty "open tubing" style of rack (not light weight voyager/blackburn platform-style) for a Specialized Globe San Francisco 2. Along with the clearance issue of rear disc, this frame has no eyelets on the drop outs. The seat/chainstays are split and attach with 2 allen head bolts, one of which is tapped & threaded - the only rear attachment point(pictured from chain side). Fenders will be mounted using this attachment.
I have found a rack on eBay that clamps to the lower seat stays (pictured) and wonder if anyone has experience with this type of rack or mounting? It looks very adjustable & sturdy - only drawback being many bolts to come loose with vibration and usage (loctite should fix this once it is properly fitted and positioned). Also seat stays are square tubing- possible clamping issue?