I've been browsing these forums for years and figured that now might be a good time to join. I wanted to post my solution to mounting a rear rack on a racing style frame and the problem of heel clearance. Story goes I wanted to convert my road bike that I hadn't ridden in years to a commuter. Step 1 was to convert to a flat bar - solved thanks to Shimano's flat bar set that's compatible with cantilever brakes and old ultegra 8-speed gearing. Strangely. Finding the shifters in the USA was tough and I had to order from Chain Reaction out of the UK. Regardless, they work great so far! Step 2 was installing the rack. The dropouts were drilled for fender mounting, so attaching the dropouts to the rack was a piece of cake. Installing the rack to the seat stay was a bit more challenging, but a couple of P-Clamps later it was installed and was rock solid. What I didn't anticipate was the heel clearance issue thanks to the shorter racing-inspired wheelbase. I looked online for solutions, but came up empty handed. I decided to fabricate my own solution out of flat steel bar that I wrapped in electrical tape and drilled 3 holes in them: rack mount, fender mount on dropouts and a p-clamp anchor on the chainstay. I now have plenty of clearance and the rack is so far rock solid. I think it turned out pretty great!