Hack, or anyone else. Has anyone ever built a brake into the front fork or rear chainstay and used hydraulic components to push a pad against the wheel rim? This would get rid of a visible caliper or a disc brake structure down around the hub. It would require a fatter upper fork and chainstay but that could be nicely faired and made a part of the bike's lines. I will bet it's been done but I've never heard of it. Another chance for funetical to make a million dollars. We have to help this bloke.